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yukulele/esdown.js

Created June 29, 2015 23:45
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esdown
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esdown.js
/*=esdown=*/(function(fn, deps, name) { function obj() { return {} } if (typeof exports !== 'undefined') fn(require, exports, module); else if (typeof define === 'function' && define.amd) define(['require', 'exports', 'module'].concat(deps), fn); else if (typeof window !== 'undefined' && name) fn(obj, window[name] = {}, {}); else if (typeof self !== 'undefined' && name) fn(obj, self[name] = {}, {}); else fn(obj, {}, {}); })(function(require, exports, module) { 'use strict'; function __load(p, l) { module.__es6 = !l; var e = require(p); if (e && e.constructor !== Object) e.default = e; return e; }
(function() {
var VERSION = "0.9.9";
var Global = (function() {
try { return global.global } catch (x) {}
try { return self.self } catch (x) {}
return null;
})();
function toObject(val) {
if (val == null)
throw new TypeError(val + " is not an object");
return Object(val);
}
// Iterates over the descriptors for each own property of an object
function forEachDesc(obj, fn) {
var names = Object.getOwnPropertyNames(obj);
for (var i$0 = 0; i$0 < names.length; ++i$0)
fn(names[i$0], Object.getOwnPropertyDescriptor(obj, names[i$0]));
names = Object.getOwnPropertySymbols(obj);
for (var i$1 = 0; i$1 < names.length; ++i$1)
fn(names[i$1], Object.getOwnPropertyDescriptor(obj, names[i$1]));
return obj;
}
// Installs a property into an object, merging "get" and "set" functions
function mergeProperty(target, name, desc, enumerable) {
if (desc.get || desc.set) {
var d$0 = { configurable: true };
if (desc.get) d$0.get = desc.get;
if (desc.set) d$0.set = desc.set;
desc = d$0;
}
desc.enumerable = enumerable;
Object.defineProperty(target, name, desc);
}
// Installs properties on an object, merging "get" and "set" functions
function mergeProperties(target, source, enumerable) {
forEachDesc(source, function(name, desc) { return mergeProperty(target, name, desc, enumerable); });
}
// Builds a class
function buildClass(base, def) {
var parent;
if (def === void 0) {
// If no base class is specified, then Object.prototype
// is the parent prototype
def = base;
base = null;
parent = Object.prototype;
} else if (base === null) {
// If the base is null, then then then the parent prototype is null
parent = null;
} else if (typeof base === "function") {
parent = base.prototype;
// Prototype must be null or an object
if (parent !== null && Object(parent) !== parent)
parent = void 0;
}
if (parent === void 0)
throw new TypeError;
// Create the prototype object
var proto = Object.create(parent),
statics = {};
function __(target, obj) {
if (!obj) mergeProperties(proto, target, false);
else mergeProperties(target, obj, false);
}
__.static = function(obj) { return mergeProperties(statics, obj, false); };
__.super = parent;
__.csuper = base || Function.prototype;
// Generate method collections, closing over super bindings
def(__);
var ctor = proto.constructor;
// Set constructor's prototype
ctor.prototype = proto;
// Set class "static" methods
forEachDesc(statics, function(name, desc) { return Object.defineProperty(ctor, name, desc); });
// Inherit from base constructor
if (base && ctor.__proto__)
Object.setPrototypeOf(ctor, base);
return ctor;
}
Global._esdown = {
version: VERSION,
global: Global,
class: buildClass,
// Support for iterator protocol
iter: function(obj) {
if (obj[Symbol.iterator] !== void 0)
return obj[Symbol.iterator]();
if (Array.isArray(obj))
return obj.values();
return obj;
},
asyncIter: function(obj) {
if (obj[Symbol.asyncIterator] !== void 0)
return obj[Symbol.asyncIterator]();
var iter = _esdown.computed({ }, Symbol.asyncIterator, { _: function() { return this } }),
inner = _esdown.iter(obj);
["next", "throw", "return"].forEach(function(name) {
if (name in inner)
iter[name] = function(value) { return Promise.resolve(inner[name](value)); };
});
return iter;
},
// Support for computed property names
computed: function(target) {
for (var i$2 = 1; i$2 < arguments.length; i$2 += 3) {
var desc$0 = Object.getOwnPropertyDescriptor(arguments[i$2 + 1], "_");
mergeProperty(target, arguments[i$2], desc$0, true);
if (i$2 + 2 < arguments.length)
mergeProperties(target, arguments[i$2 + 2], true);
}
return target;
},
// Support for tagged templates
callSite: function(values, raw) {
values.raw = raw || values;
return values;
},
// Support for async functions
async: function(iter) {
return new Promise(function(resolve, reject) {
resume("next", void 0);
function resume(type, value) {
try {
var result$0 = iter[type](value);
if (result$0.done) {
resolve(result$0.value);
} else {
Promise.resolve(result$0.value).then(
function(x) { return resume("next", x); },
function(x) { return resume("throw", x); });
}
} catch (x) { reject(x) }
}
});
},
// Support for async generators
asyncGen: function(iter) {
var front = null, back = null;
return _esdown.computed({
next: function(val) { return send("next", val) },
throw: function(val) { return send("throw", val) },
return: function(val) { return send("return", val) },
}, Symbol.asyncIterator, { _: function() { return this },
});
function send(type, value) {
return new Promise(function(resolve, reject) {
var x = { type: type, value: value, resolve: resolve, reject: reject, next: null };
if (back) {
back = back.next = x;
} else {
front = back = x;
resume(type, value);
}
});
}
function resume(type, value) {
if (type === "return" && !(type in iter)) {
// HACK: If the generator does not support the "return" method, then
// emulate it (poorly) using throw. (V8 circa 2015-02-13 does not support
// generator.return.)
type = "throw";
value = { value: value, __return: true };
}
try {
var result$1 = iter[type](value);
value = result$1.value;
if (typeof value === "object" && "_esdown_await" in value) {
if (result$1.done)
throw new Error("Invalid async generator return");
Promise.resolve(value._esdown_await).then(
function(x) { return resume("next", x); },
function(x) { return resume("throw", x); });
return;
}
front.resolve(result$1);
} catch (x) {
if (x && x.__return === true) {
// HACK: Return-as-throw
front.resolve({ value: x.value, done: true });
} else {
front.reject(x);
}
}
front = front.next;
if (front) resume(front.type, front.value);
else back = null;
}
},
// Support for spread operations
spread: function() {
return {
a: [],
// Add items
s: function() {
for (var i$3 = 0; i$3 < arguments.length; ++i$3)
this.a.push(arguments[i$3]);
return this;
},
// Add the contents of iterables
i: function(list) {
if (Array.isArray(list)) {
this.a.push.apply(this.a, list);
} else {
for (var __$0 = _esdown.iter(list), __$1; __$1 = __$0.next(), !__$1.done;)
{ var item$0 = __$1.value; this.a.push(item$0); }
}
return this;
}
};
},
// Support for object destructuring
objd: function(obj) {
return toObject(obj);
},
// Support for array destructuring
arrayd: function(obj) {
if (Array.isArray(obj)) {
return {
at: function(skip, pos) { return obj[pos] },
rest: function(skip, pos) { return obj.slice(pos) }
};
}
var iter = _esdown.iter(toObject(obj));
return {
at: function(skip) {
var r;
while (skip--)
r = iter.next();
return r.value;
},
rest: function(skip) {
var a = [], r;
while (--skip)
r = iter.next();
while (r = iter.next(), !r.done)
a.push(r.value);
return a;
}
};
},
// Support for private fields
getPrivate: function(obj, map, name) {
var entry = map.get(Object(obj));
if (!entry)
throw new TypeError;
return entry[name];
},
setPrivate: function(obj, map, name, value) {
var entry = map.get(Object(obj));
if (!entry)
throw new TypeError;
return entry[name] = value;
}
};
}).call(this);
(function() {
// === Polyfill Utilities ===
function eachKey(obj, fn) {
var keys = Object.getOwnPropertyNames(obj);
for (var i$4 = 0; i$4 < keys.length; ++i$4)
fn(keys[i$4]);
if (!Object.getOwnPropertySymbols)
return;
keys = Object.getOwnPropertySymbols(obj);
for (var i$5 = 0; i$5 < keys.length; ++i$5)
fn(keys[i$5]);
}
function polyfill(obj, methods) {
eachKey(methods, function(key) {
if (key in obj)
return;
Object.defineProperty(obj, key, {
value: methods[key],
configurable: true,
enumerable: false,
writable: true
});
});
}
// === Spec Helpers ===
var sign = Math.sign || function(val) {
var n = +val;
if (n === 0 || Number.isNaN(n))
return n;
return n < 0 ? -1 : 1;
};
function toInteger(val) {
var n = +val;
return n !== n /* n is NaN */ ? 0 :
(n === 0 || !isFinite(n)) ? n :
sign(n) * Math.floor(Math.abs(n));
}
function toLength(val) {
var n = toInteger(val);
return n < 0 ? 0 : Math.min(n, Number.MAX_SAFE_INTEGER);
}
function sameValue(left, right) {
if (left === right)
return left !== 0 || 1 / left === 1 / right;
return left !== left && right !== right;
}
function isRegExp(val) {
return Object.prototype.toString.call(val) == "[object RegExp]";
}
function toObject(val) {
if (val == null)
throw new TypeError(val + " is not an object");
return Object(val);
}
function iteratorMethod(obj) {
// TODO: What about typeof === "string"?
if (!obj || typeof obj !== "object")
return null;
var m = obj[Symbol.iterator];
// Generator iterators in Node 0.11.13 do not have a [Symbol.iterator] method
if (!m && typeof obj.next === "function" && typeof obj.throw === "function")
return function() { return this };
return m;
}
function assertThis(val, name) {
if (val == null)
throw new TypeError(name + " called on null or undefined");
}
// === Symbols ===
var symbolCounter = 0,
global = _esdown.global;
function fakeSymbol() {
return "__$" + Math.floor(Math.random() * 1e9) + "$" + (++symbolCounter) + "$__";
}
if (!global.Symbol)
global.Symbol = fakeSymbol;
polyfill(Symbol, {
iterator: Symbol("iterator"),
species: Symbol("species"),
// Experimental async iterator support
asyncIterator: Symbol("asyncIterator"),
});
// === Object ===
polyfill(Object, {
is: sameValue,
assign: function(target, source) {
target = toObject(target);
for (var i$6 = 1; i$6 < arguments.length; ++i$6) {
source = arguments[i$6];
if (source != null) // null or undefined
Object.keys(source).forEach(function(key) { return target[key] = source[key]; });
}
return target;
},
setPrototypeOf: function(object, proto) {
// Least effort attempt
object.__proto__ = proto;
},
getOwnPropertySymbols: function() {
// If getOwnPropertySymbols is not supported, then just return an
// empty array so that we can avoid feature testing
}
});
// === Number ===
function isInteger(val) {
return typeof val === "number" && isFinite(val) && toInteger(val) === val;
}
function epsilon() {
// Calculate the difference between 1 and the smallest value greater than 1 that
// is representable as a Number value
var result;
for (var next$0 = 1; 1 + next$0 !== 1; next$0 = next$0 / 2)
result = next$0;
return result;
}
polyfill(Number, {
EPSILON: epsilon(),
MAX_SAFE_INTEGER: 9007199254740991,
MIN_SAFE_INTEGER: -9007199254740991,
parseInt: parseInt,
parseFloat: parseFloat,
isInteger: isInteger,
isFinite: function(val) { return typeof val === "number" && isFinite(val) },
isNaN: function(val) { return val !== val },
isSafeInteger: function(val) { return isInteger(val) && Math.abs(val) <= Number.MAX_SAFE_INTEGER }
});
// === String ===
polyfill(String, {
raw: function(callsite) { for (var args = [], __$0 = 1; __$0 < arguments.length; ++__$0) args.push(arguments[__$0]);
var raw = callsite.raw,
len = toLength(raw.length);
if (len === 0)
return "";
var s = "", i = 0;
while (true) {
s += raw[i];
if (i + 1 === len || i >= args.length) break;
s += args[i++];
}
return s;
},
fromCodePoint: function() { for (var points = [], __$0 = 0; __$0 < arguments.length; ++__$0) points.push(arguments[__$0]);
var out = [];
points.forEach(function(next) {
next = Number(next);
if (!sameValue(next, toInteger(next)) || next < 0 || next > 0x10ffff)
throw new RangeError("Invalid code point " + next);
if (next < 0x10000) {
out.push(String.fromCharCode(next));
} else {
next -= 0x10000;
out.push(String.fromCharCode((next >> 10) + 0xD800));
out.push(String.fromCharCode((next % 0x400) + 0xDC00));
}
});
return out.join("");
}
});
// Repeat a string by "squaring"
function repeat(s, n) {
if (n < 1) return "";
if (n % 2) return repeat(s, n - 1) + s;
var half = repeat(s, n / 2);
return half + half;
}
var StringIterator = _esdown.class(function(__) { var StringIterator;
__({ constructor: StringIterator = function(string) {
this.string = string;
this.current = 0;
},
next: function() {
var s = this.string,
i = this.current,
len = s.length;
if (i >= len) {
this.current = Infinity;
return { value: void 0, done: true };
}
var c = s.charCodeAt(i),
chars = 1;
if (c >= 0xD800 && c <= 0xDBFF && i + 1 < s.length) {
c = s.charCodeAt(i + 1);
chars = (c < 0xDC00 || c > 0xDFFF) ? 1 : 2;
}
this.current += chars;
return { value: s.slice(i, this.current), done: false };
}});
__(_esdown.computed({}, Symbol.iterator, { _: function() { return this } }));
});
polyfill(String.prototype, _esdown.computed({
repeat: function(count) {
assertThis(this, "String.prototype.repeat");
var string = String(this);
count = toInteger(count);
if (count < 0 || count === Infinity)
throw new RangeError("Invalid count value");
return repeat(string, count);
},
startsWith: function(search) {
assertThis(this, "String.prototype.startsWith");
if (isRegExp(search))
throw new TypeError("First argument to String.prototype.startsWith must not be a regular expression");
var string = String(this);
search = String(search);
var pos = arguments.length > 1 ? arguments[1] : undefined,
start = Math.max(toInteger(pos), 0);
return string.slice(start, start + search.length) === search;
},
endsWith: function(search) {
assertThis(this, "String.prototype.endsWith");
if (isRegExp(search))
throw new TypeError("First argument to String.prototype.endsWith must not be a regular expression");
var string = String(this);
search = String(search);
var len = string.length,
arg = arguments.length > 1 ? arguments[1] : undefined,
pos = arg === undefined ? len : toInteger(arg),
end = Math.min(Math.max(pos, 0), len);
return string.slice(end - search.length, end) === search;
},
contains: function(search) {
assertThis(this, "String.prototype.contains");
var string = String(this),
pos = arguments.length > 1 ? arguments[1] : undefined;
// Somehow this trick makes method 100% compat with the spec
return string.indexOf(search, pos) !== -1;
},
codePointAt: function(pos) {
assertThis(this, "String.prototype.codePointAt");
var string = String(this),
len = string.length;
pos = toInteger(pos);
if (pos < 0 || pos >= len)
return undefined;
var a = string.charCodeAt(pos);
if (a < 0xD800 || a > 0xDBFF || pos + 1 === len)
return a;
var b = string.charCodeAt(pos + 1);
if (b < 0xDC00 || b > 0xDFFF)
return a;
return ((a - 0xD800) * 1024) + (b - 0xDC00) + 0x10000;
},
}, Symbol.iterator, { _: function() {
assertThis(this, "String.prototype[Symbol.iterator]");
return new StringIterator(this);
}
}));
// === Array ===
var ArrayIterator = _esdown.class(function(__) { var ArrayIterator;
__({ constructor: ArrayIterator = function(array, kind) {
this.array = array;
this.current = 0;
this.kind = kind;
},
next: function() {
var length = toLength(this.array.length),
index = this.current;
if (index >= length) {
this.current = Infinity;
return { value: void 0, done: true };
}
this.current += 1;
switch (this.kind) {
case "values":
return { value: this.array[index], done: false };
case "entries":
return { value: [ index, this.array[index] ], done: false };
default:
return { value: index, done: false };
}
}});
__(_esdown.computed({}, Symbol.iterator, { _: function() { return this } }));
});
polyfill(Array, {
from: function(list) {
list = toObject(list);
var ctor = typeof this === "function" ? this : Array, // TODO: Always use "this"?
map = arguments[1],
thisArg = arguments[2],
i = 0,
out;
if (map !== void 0 && typeof map !== "function")
throw new TypeError(map + " is not a function");
var getIter = iteratorMethod(list);
if (getIter) {
var iter$0 = getIter.call(list),
result$2;
out = new ctor;
while (result$2 = iter$0.next(), !result$2.done) {
out[i++] = map ? map.call(thisArg, result$2.value, i) : result$2.value;
out.length = i;
}
} else {
var len$0 = toLength(list.length);
out = new ctor(len$0);
for (; i < len$0; ++i)
out[i] = map ? map.call(thisArg, list[i], i) : list[i];
out.length = len$0;
}
return out;
},
of: function() { for (var items = [], __$0 = 0; __$0 < arguments.length; ++__$0) items.push(arguments[__$0]);
var ctor = typeof this === "function" ? this : Array;
if (ctor === Array)
return items;
var len = items.length,
out = new ctor(len);
for (var i$7 = 0; i$7 < len; ++i$7)
out[i$7] = items[i$7];
out.length = len;
return out;
}
});
function arrayFind(obj, pred, thisArg, type) {
var len = toLength(obj.length),
val;
if (typeof pred !== "function")
throw new TypeError(pred + " is not a function");
for (var i$8 = 0; i$8 < len; ++i$8) {
val = obj[i$8];
if (pred.call(thisArg, val, i$8, obj))
return type === "value" ? val : i$8;
}
return type === "value" ? void 0 : -1;
}
polyfill(Array.prototype, _esdown.computed({
copyWithin: function(target, start) {
var obj = toObject(this),
len = toLength(obj.length),
end = arguments[2];
target = toInteger(target);
start = toInteger(start);
var to = target < 0 ? Math.max(len + target, 0) : Math.min(target, len),
from = start < 0 ? Math.max(len + start, 0) : Math.min(start, len);
end = end !== void 0 ? toInteger(end) : len;
end = end < 0 ? Math.max(len + end, 0) : Math.min(end, len);
var count = Math.min(end - from, len - to),
dir = 1;
if (from < to && to < from + count) {
dir = -1;
from += count - 1;
to += count - 1;
}
for (; count > 0; --count) {
if (from in obj) obj[to] = obj[from];
else delete obj[to];
from += dir;
to += dir;
}
return obj;
},
fill: function(value) {
var obj = toObject(this),
len = toLength(obj.length),
start = toInteger(arguments[1]),
pos = start < 0 ? Math.max(len + start, 0) : Math.min(start, len),
end = arguments.length > 2 ? toInteger(arguments[2]) : len;
end = end < 0 ? Math.max(len + end, 0) : Math.min(end, len);
for (; pos < end; ++pos)
obj[pos] = value;
return obj;
},
find: function(pred) {
return arrayFind(toObject(this), pred, arguments[1], "value");
},
findIndex: function(pred) {
return arrayFind(toObject(this), pred, arguments[1], "index");
},
values: function() { return new ArrayIterator(this, "values") },
entries: function() { return new ArrayIterator(this, "entries") },
keys: function() { return new ArrayIterator(this, "keys") },
}, Symbol.iterator, { _: function() { return this.values() }
}));
}).call(this);
(function() {
var global = _esdown.global,
ORIGIN = {},
REMOVED = {};
var MapNode = _esdown.class(function(__) { var MapNode;
__({ constructor: MapNode = function(key, val) {
this.key = key;
this.value = val;
this.prev = this;
this.next = this;
},
insert: function(next) {
this.next = next;
this.prev = next.prev;
this.prev.next = this;
this.next.prev = this;
},
remove: function() {
this.prev.next = this.next;
this.next.prev = this.prev;
this.key = REMOVED;
}});
});
var MapIterator = _esdown.class(function(__) { var MapIterator;
__({ constructor: MapIterator = function(node, kind) {
this.current = node;
this.kind = kind;
},
next: function() {
var node = this.current;
while (node.key === REMOVED)
node = this.current = this.current.next;
if (node.key === ORIGIN)
return { value: void 0, done: true };
this.current = this.current.next;
switch (this.kind) {
case "values":
return { value: node.value, done: false };
case "entries":
return { value: [ node.key, node.value ], done: false };
default:
return { value: node.key, done: false };
}
}});
__(_esdown.computed({}, Symbol.iterator, { _: function() { return this } }));
});
function hashKey(key) {
switch (typeof key) {
case "string": return "$" + key;
case "number": return String(key);
}
throw new TypeError("Map and Set keys must be strings or numbers in esdown");
}
var Map = _esdown.class(function(__) { var Map;
__({ constructor: Map = function() {
if (arguments.length > 0)
throw new Error("Arguments to Map constructor are not supported in esdown");
this._index = {};
this._origin = new MapNode(ORIGIN);
},
clear: function() {
for (var node$0 = this._origin.next; node$0 !== this._origin; node$0 = node$0.next)
node$0.key = REMOVED;
this._index = {};
this._origin = new MapNode(ORIGIN);
},
delete: function(key) {
var h = hashKey(key),
node = this._index[h];
if (node) {
node.remove();
delete this._index[h];
return true;
}
return false;
},
forEach: function(fn) {
var thisArg = arguments[1];
if (typeof fn !== "function")
throw new TypeError(fn + " is not a function");
for (var node$1 = this._origin.next; node$1.key !== ORIGIN; node$1 = node$1.next)
if (node$1.key !== REMOVED)
fn.call(thisArg, node$1.value, node$1.key, this);
},
get: function(key) {
var h = hashKey(key),
node = this._index[h];
return node ? node.value : void 0;
},
has: function(key) {
return hashKey(key) in this._index;
},
set: function(key, val) {
var h = hashKey(key),
node = this._index[h];
if (node) {
node.value = val;
return;
}
node = new MapNode(key, val);
this._index[h] = node;
node.insert(this._origin);
},
get size() {
return Object.keys(this._index).length;
},
keys: function() { return new MapIterator(this._origin.next, "keys") },
values: function() { return new MapIterator(this._origin.next, "values") },
entries: function() { return new MapIterator(this._origin.next, "entries") }});
__(_esdown.computed({}, Symbol.iterator, { _: function() { return new MapIterator(this._origin.next, "entries") } }));
});
var mapSet = Map.prototype.set;
var Set = _esdown.class(function(__) { var Set;
__({ constructor: Set = function() {
if (arguments.length > 0)
throw new Error("Arguments to Set constructor are not supported in esdown");
this._index = {};
this._origin = new MapNode(ORIGIN);
},
add: function(key) { return mapSet.call(this, key, key) }});
__(_esdown.computed({}, Symbol.iterator, { _: function() { return new MapIterator(this._origin.next, "entries") } }));
});
// Copy shared prototype members to Set
["clear", "delete", "forEach", "has", "size", "keys", "values", "entries"].forEach(function(k) {
var d = Object.getOwnPropertyDescriptor(Map.prototype, k);
Object.defineProperty(Set.prototype, k, d);
});
if (!global.Map || !global.Map.prototype.entries) {
global.Map = Map;
global.Set = Set;
}
}).call(this);
(function() {
(function() { "use strict";
// Find global variable and exit if Promise is defined on it
var Global = (function() {
if (typeof window !== "undefined" && window && window.window === window)
return window;
if (typeof global !== "undefined" && global && global.global === global)
return global;
if (typeof self !== "undefined" && self && self.self === self)
return self;
throw new Error("Unable to determine global object");
})();
if (typeof Global.Promise === "function")
return;
// Create an efficient microtask queueing mechanism
var runLater = (function() {
// Node
if (Global.process && typeof process.version === "string") {
return Global.setImmediate ?
function(fn) { setImmediate(fn); } :
function(fn) { process.nextTick(fn); };
}
// Newish Browsers
var Observer = Global.MutationObserver || Global.WebKitMutationObserver;
if (Observer) {
var div = document.createElement("div"),
queuedFn = void 0;
var observer = new Observer(function() {
var fn = queuedFn;
queuedFn = void 0;
fn();
});
observer.observe(div, { attributes: true });
return function(fn) {
if (queuedFn !== void 0)
throw new Error("Only one function can be queued at a time");
queuedFn = fn;
div.classList.toggle("x");
};
}
// Fallback
return function(fn) { setTimeout(fn, 0); };
})();
var EnqueueMicrotask = (function() {
var queue = null;
function flush() {
var q = queue;
queue = null;
for (var i = 0; i < q.length; ++i)
q[i]();
}
return function PromiseEnqueueMicrotask(fn) {
// fn must not throw
if (!queue) {
queue = [];
runLater(flush);
}
queue.push(fn);
};
})();
// Mock V8 internal functions and vars
function SET_PRIVATE(obj, prop, val) { obj[prop] = val; }
function GET_PRIVATE(obj, prop) { return obj[prop]; }
function IS_SPEC_FUNCTION(obj) { return typeof obj === "function"; }
function IS_SPEC_OBJECT(obj) { return obj === Object(obj); }
function HAS_DEFINED_PRIVATE(obj, prop) { return prop in obj; }
function IS_UNDEFINED(x) { return x === void 0; }
function MakeTypeError(msg) { return new TypeError(msg); }
// In IE8 Object.defineProperty only works on DOM nodes, and defineProperties does not exist
var _defineProperty = Object.defineProperties && Object.defineProperty;
function AddNamedProperty(target, name, value) {
if (!_defineProperty) {
target[name] = value;
return;
}
_defineProperty(target, name, {
configurable: true,
writable: true,
enumerable: false,
value: value
});
}
function InstallFunctions(target, attr, list) {
for (var i = 0; i < list.length; i += 2)
AddNamedProperty(target, list[i], list[i + 1]);
}
var IsArray = Array.isArray || (function(obj) {
var str = Object.prototype.toString;
return function(obj) { return str.call(obj) === "[object Array]" };
})();
var UNDEFINED, DONT_ENUM, InternalArray = Array;
// V8 Implementation
var IsPromise;
var PromiseCreate;
var PromiseResolve;
var PromiseReject;
var PromiseChain;
var PromiseCatch;
var PromiseThen;
// Status values: 0 = pending, +1 = resolved, -1 = rejected
var promiseStatus = "Promise#status";
var promiseValue = "Promise#value";
var promiseOnResolve = "Promise#onResolve";
var promiseOnReject = "Promise#onReject";
var promiseRaw = {};
var promiseHasHandler = "Promise#hasHandler";
var lastMicrotaskId = 0;
var $Promise = function Promise(resolver) {
if (resolver === promiseRaw) return;
if (!IS_SPEC_FUNCTION(resolver))
throw MakeTypeError('resolver_not_a_function', [resolver]);
var promise = PromiseInit(this);
try {
resolver(function(x) { PromiseResolve(promise, x) },
function(r) { PromiseReject(promise, r) });
} catch (e) {
PromiseReject(promise, e);
}
}
// Core functionality.
function PromiseSet(promise, status, value, onResolve, onReject) {
SET_PRIVATE(promise, promiseStatus, status);
SET_PRIVATE(promise, promiseValue, value);
SET_PRIVATE(promise, promiseOnResolve, onResolve);
SET_PRIVATE(promise, promiseOnReject, onReject);
return promise;
}
function PromiseInit(promise) {
return PromiseSet(promise, 0, UNDEFINED, new InternalArray, new InternalArray);
}
function PromiseDone(promise, status, value, promiseQueue) {
if (GET_PRIVATE(promise, promiseStatus) === 0) {
PromiseEnqueue(value, GET_PRIVATE(promise, promiseQueue), status);
PromiseSet(promise, status, value);
}
}
function PromiseCoerce(constructor, x) {
if (!IsPromise(x) && IS_SPEC_OBJECT(x)) {
var then;
try {
then = x.then;
} catch(r) {
return PromiseRejected.call(constructor, r);
}
if (IS_SPEC_FUNCTION(then)) {
var deferred = PromiseDeferred.call(constructor);
try {
then.call(x, deferred.resolve, deferred.reject);
} catch(r) {
deferred.reject(r);
}
return deferred.promise;
}
}
return x;
}
function PromiseHandle(value, handler, deferred) {
try {
var result = handler(value);
if (result === deferred.promise)
throw MakeTypeError('promise_cyclic', [result]);
else if (IsPromise(result))
PromiseChain.call(result, deferred.resolve, deferred.reject);
else
deferred.resolve(result);
} catch (exception) {
try { deferred.reject(exception) } catch (e) { }
}
}
function PromiseEnqueue(value, tasks, status) {
EnqueueMicrotask(function() {
for (var i = 0; i < tasks.length; i += 2)
PromiseHandle(value, tasks[i], tasks[i + 1]);
});
}
function PromiseIdResolveHandler(x) { return x }
function PromiseIdRejectHandler(r) { throw r }
function PromiseNopResolver() {}
// -------------------------------------------------------------------
// Define exported functions.
// For bootstrapper.
IsPromise = function IsPromise(x) {
return IS_SPEC_OBJECT(x) && HAS_DEFINED_PRIVATE(x, promiseStatus);
};
PromiseCreate = function PromiseCreate() {
return new $Promise(PromiseNopResolver);
};
PromiseResolve = function PromiseResolve(promise, x) {
PromiseDone(promise, +1, x, promiseOnResolve);
};
PromiseReject = function PromiseReject(promise, r) {
PromiseDone(promise, -1, r, promiseOnReject);
};
// Convenience.
function PromiseDeferred() {
if (this === $Promise) {
// Optimized case, avoid extra closure.
var promise = PromiseInit(new $Promise(promiseRaw));
return {
promise: promise,
resolve: function(x) { PromiseResolve(promise, x) },
reject: function(r) { PromiseReject(promise, r) }
};
} else {
var result = {};
result.promise = new this(function(resolve, reject) {
result.resolve = resolve;
result.reject = reject;
});
return result;
}
}
function PromiseResolved(x) {
if (this === $Promise) {
// Optimized case, avoid extra closure.
return PromiseSet(new $Promise(promiseRaw), +1, x);
} else {
return new this(function(resolve, reject) { resolve(x) });
}
}
function PromiseRejected(r) {
var promise;
if (this === $Promise) {
// Optimized case, avoid extra closure.
promise = PromiseSet(new $Promise(promiseRaw), -1, r);
} else {
promise = new this(function(resolve, reject) { reject(r) });
}
return promise;
}
// Simple chaining.
PromiseChain = function PromiseChain(onResolve, onReject) {
onResolve = IS_UNDEFINED(onResolve) ? PromiseIdResolveHandler : onResolve;
onReject = IS_UNDEFINED(onReject) ? PromiseIdRejectHandler : onReject;
var deferred = PromiseDeferred.call(this.constructor);
switch (GET_PRIVATE(this, promiseStatus)) {
case UNDEFINED:
throw MakeTypeError('not_a_promise', [this]);
case 0: // Pending
GET_PRIVATE(this, promiseOnResolve).push(onResolve, deferred);
GET_PRIVATE(this, promiseOnReject).push(onReject, deferred);
break;
case +1: // Resolved
PromiseEnqueue(GET_PRIVATE(this, promiseValue), [onResolve, deferred], +1);
break;
case -1: // Rejected
PromiseEnqueue(GET_PRIVATE(this, promiseValue), [onReject, deferred], -1);
break;
}
// Mark this promise as having handler.
SET_PRIVATE(this, promiseHasHandler, true);
return deferred.promise;
}
PromiseCatch = function PromiseCatch(onReject) {
return this.then(UNDEFINED, onReject);
}
// Multi-unwrapped chaining with thenable coercion.
PromiseThen = function PromiseThen(onResolve, onReject) {
onResolve = IS_SPEC_FUNCTION(onResolve) ? onResolve : PromiseIdResolveHandler;
onReject = IS_SPEC_FUNCTION(onReject) ? onReject : PromiseIdRejectHandler;
var that = this;
var constructor = this.constructor;
return PromiseChain.call(
this,
function(x) {
x = PromiseCoerce(constructor, x);
return x === that ? onReject(MakeTypeError('promise_cyclic', [x])) :
IsPromise(x) ? x.then(onResolve, onReject) :
onResolve(x);
},
onReject);
}
// Combinators.
function PromiseCast(x) {
return IsPromise(x) ? x : new this(function(resolve) { resolve(x) });
}
function PromiseAll(values) {
var deferred = PromiseDeferred.call(this);
var resolutions = [];
if (!IsArray(values)) {
deferred.reject(MakeTypeError('invalid_argument'));
return deferred.promise;
}
try {
var count = values.length;
if (count === 0) {
deferred.resolve(resolutions);
} else {
for (var i = 0; i < values.length; ++i) {
this.resolve(values[i]).then(
(function() {
// Nested scope to get closure over current i (and avoid .bind).
var i_captured = i;
return function(x) {
resolutions[i_captured] = x;
if (--count === 0) deferred.resolve(resolutions);
};
})(),
function(r) { deferred.reject(r) });
}
}
} catch (e) {
deferred.reject(e);
}
return deferred.promise;
}
function PromiseOne(values) {
var deferred = PromiseDeferred.call(this);
if (!IsArray(values)) {
deferred.reject(MakeTypeError('invalid_argument'));
return deferred.promise;
}
try {
for (var i = 0; i < values.length; ++i) {
this.resolve(values[i]).then(
function(x) { deferred.resolve(x) },
function(r) { deferred.reject(r) });
}
} catch (e) {
deferred.reject(e);
}
return deferred.promise;
}
// -------------------------------------------------------------------
// Install exported functions.
AddNamedProperty(Global, 'Promise', $Promise, DONT_ENUM);
InstallFunctions($Promise, DONT_ENUM, [
"defer", PromiseDeferred,
"accept", PromiseResolved,
"reject", PromiseRejected,
"all", PromiseAll,
"race", PromiseOne,
"resolve", PromiseCast
]);
InstallFunctions($Promise.prototype, DONT_ENUM, [
"chain", PromiseChain,
"then", PromiseThen,
"catch", PromiseCatch
]);
})();
}).call(this);
(function() {
// === Job Queueing ===
var enqueueJob = (function() {
// Node
if (typeof self === "undefined" && typeof global !== "undefined") {
return global.setImmediate ?
function(fn) { global.setImmediate(fn) } :
function(fn) { process.nextTick(fn) };
}
// Newish Browsers
var Observer = self.MutationObserver || self.WebKitMutationObserver;
if (Observer) {
var div$0 = document.createElement("div"),
twiddle$0 = function(_) { return div$0.classList.toggle("x"); },
queue$0 = [];
var observer$0 = new Observer(function(_) {
if (queue$0.length > 1)
twiddle$0();
while (queue$0.length > 0)
queue$0.shift()();
});
observer$0.observe(div$0, { attributes: true });
return function(fn) {
queue$0.push(fn);
if (queue$0.length === 1)
twiddle$0();
};
}
// Fallback
return function(fn) { setTimeout(fn, 0) };
})();
// === Symbol Polyfills ===
function polyfillSymbol(name) {
if (!Symbol[name])
Object.defineProperty(Symbol, name, { value: Symbol(name) });
}
polyfillSymbol("observable");
// === Abstract Operations ===
function cancelSubscription(observer) {
var subscription = observer._subscription;
if (!subscription)
return;
// Drop the reference to the subscription so that we don't unsubscribe
// more than once
observer._subscription = undefined;
try {
// Call the unsubscribe function
subscription.unsubscribe();
} finally {
// Drop the reference to the inner observer so that no more notifications
// will be sent
observer._observer = undefined;
}
}
function closeSubscription(observer) {
observer._observer = undefined;
cancelSubscription(observer);
}
function hasUnsubscribe(x) {
return Object(x) === x && typeof x.unsubscribe === "function";
}
var SubscriptionObserver = _esdown.class(function(__) { var SubscriptionObserver;
__({ constructor: SubscriptionObserver = function(observer) {
this._observer = observer;
this._subscription = undefined;
},
next: function(value) {
var observer = this._observer;
// If the stream if closed, then return a "done" result
if (!observer)
return { value: undefined, done: true };
var result;
try {
// Send the next value to the sink
result = observer.next(value);
} catch (e) {
// If the observer throws, then close the stream and rethrow the error
closeSubscription(this);
throw e;
}
// Cleanup if sink is closed
if (result && result.done)
closeSubscription(this);
return result;
},
throw: function(value) {
var observer = this._observer;
// If the stream is closed, throw the error to the caller
if (!observer)
throw value;
this._observer = undefined;
try {
// If the sink does not support "throw", then throw the error to the caller
if (!("throw" in observer))
throw value;
return observer.throw(value);
} finally {
cancelSubscription(this);
}
},
return: function(value) {
var observer = this._observer;
// If the stream is closed, then return a done result
if (!observer)
return { value: value, done: true };
this._observer = undefined;
try {
// If the sink does not support "return", then return a done result
if (!("return" in observer))
return { value: value, done: true };
return observer.return(value);
} finally {
cancelSubscription(this);
}
}});
});
var Observable = _esdown.class(function(__) { var Observable;
__({ constructor: Observable = function(subscriber) {
// The stream subscriber must be a function
if (typeof subscriber !== "function")
throw new TypeError("Observable initializer must be a function");
this._subscriber = subscriber;
},
subscribe: function(observer) { var __this = this;
// The sink must be an object
if (Object(observer) !== observer)
throw new TypeError("Observer must be an object");
// Wrap the observer in order to maintain observation invariants
observer = new SubscriptionObserver(observer);
var unsubscribed = false,
subscription;
enqueueJob(function(_) {
if (unsubscribed)
return;
try {
// Call the subscriber function
subscription = __this._subscriber.call(undefined, observer);
if (!hasUnsubscribe(subscription)) {
var unsubscribe$0 = typeof subscription === "function" ?
subscription :
(function(_) { observer.return() });
subscription = { unsubscribe: unsubscribe$0 };
}
} catch (e) {
// If an error occurs during startup, then attempt to send the error
// to the observer
observer.throw(e);
}
observer._subscription = subscription;
// If the stream is already finished, then perform cleanup
if (!observer._observer)
cancelSubscription(observer);
});
return {
unsubscribe: function() {
if (unsubscribed)
return;
unsubscribed = true;
if (subscription)
subscription.unsubscribe();
}
};
}});
__(_esdown.computed({}, Symbol.observable, { _: function() { return this } }));
__({ forEach: function(fn, thisArg) { var __this = this; if (thisArg === void 0) thisArg = undefined;
return new Promise(function(resolve, reject) {
if (typeof fn !== "function")
throw new TypeError(fn + " is not a function");
__this.subscribe({
next: function(value) { fn.call(thisArg, value) },
throw: function(value) { reject(value) },
return: function(value) { resolve(undefined) },
});
});
},
map: function(fn, thisArg) { var __this = this; if (thisArg === void 0) thisArg = undefined;
if (typeof fn !== "function")
throw new TypeError(fn + " is not a function");
return new this.constructor[Symbol.species](function(sink) { return __this.subscribe({
next: function(value) {
try { value = fn.call(thisArg, value) }
catch (e) { return sink.throw(e) }
return sink.next(value);
},
throw: function(value) { return sink.throw(value) },
return: function(value) { return sink.return(value) },
}); });
},
filter: function(fn, thisArg) { var __this = this; if (thisArg === void 0) thisArg = undefined;
if (typeof fn !== "function")
throw new TypeError(fn + " is not a function");
return new this.constructor[Symbol.species](function(sink) { return __this.subscribe({
next: function(value) {
try { if (!fn.call(thisArg, value)) return { done: false } }
catch (e) { return sink.throw(e) }
return sink.next(value);
},
throw: function(value) { return sink.throw(value) },
return: function(value) { return sink.return(value) },
}); });
}});
__.static({ from: function(x) {
var C = typeof this === "function" ? this : Observable;
if (x == null)
throw new TypeError(x + " is not an object");
var method = x[Symbol.observable];
if (method != null) {
if (typeof method !== "function")
throw new TypeError(method + " is not a function");
var observable$0 = method.call(x);
if (Object(observable$0) !== observable$0)
throw new TypeError(observable$0 + " is not an object");
if (observable$0.constructor === C)
return observable$0;
return new C(function(sink) { return observable$0.subscribe(sink); });
}
method = x[Symbol.iterator];
if (typeof method !== "function")
throw new TypeError(method + " is not a function");
return new C(function(sink) {
for (var __$0 = _esdown.iter(method.call(x)), __$1; __$1 = __$0.next(), !__$1.done;) { var item$1 = __$1.value;
var result$3 = sink.next(item$1);
if (result$3 && result$3.done)
return;
}
sink.return();
});
},
of: function() { for (var items = [], __$0 = 0; __$0 < arguments.length; ++__$0) items.push(arguments[__$0]);
var C = typeof this === "function" ? this : Observable;
return new C(function(sink) {
for (var __$0 = _esdown.iter(items), __$1; __$1 = __$0.next(), !__$1.done;) { var item$2 = __$1.value;
var result$4 = sink.next(item$2);
if (result$4 && result$4.done)
return;
}
sink.return();
});
}});
__.static(_esdown.computed({}, Symbol.species, { get _() { return this } }));
});
if (!_esdown.global.Observable)
_esdown.global.Observable = Observable;
}).call(this);
var _M2 = __load("fs", 1), _M3 = __load("path", 1), _M19 = {}, _M20 = {}, _M21 = {}, _M10 = {}, _M4 = {}, _M5 = {}, _M11 = __load("repl", 1), _M12 = __load("vm", 1), _M13 = __load("util", 1), _M28 = {}, _M24 = {}, _M31 = {}, _M29 = {}, _M30 = {}, _M25 = {}, _M26 = {}, _M27 = {}, _M22 = {}, _M23 = {}, _M18 = {}, _M9 = {}, _M17 = {}, _M16 = {}, _M15 = {}, _M8 = {}, _M14 = {}, _M6 = {}, _M7 = {}, _M1 = exports;
(function(exports) {
var HAS = Object.prototype.hasOwnProperty;
function raise(x) {
x.name = "CommandError";
throw x;
}
function has(obj, name) {
return HAS.call(obj, name);
}
function parse(argv, params) {
if (!params)
return argv.slice(0);
var pos = Object.keys(params),
values = {},
shorts = {},
required = [],
list = [values];
// Create short-to-long mapping
pos.forEach(function(name) {
var p = params[name];
if (p.short)
shorts[p.short] = name;
if (p.required)
required.push(name);
});
// For each command line arg...
for (var i$0 = 0; i$0 < argv.length; ++i$0) {
var a$0 = argv[i$0],
param$0 = null,
value$0 = null,
name$0 = "";
if (a$0[0] === "-") {
if (a$0.slice(0, 2) === "--") {
// Long named parameter
name$0 = a$0.slice(2);
param$0 = has(params, name$0) ? params[name$0] : null;
} else {
// Short named parameter
name$0 = a$0.slice(1);
name$0 = has(shorts, name$0) ? shorts[name$0] : "";
param$0 = has(params, name$0) ? params[name$0] : null;
}
// Verify parameter exists
if (!param$0)
raise(new Error("Invalid command line option: " + a$0));
if (param$0.flag) {
value$0 = true;
} else {
// Get parameter value
value$0 = argv[++i$0] || "";
if (typeof value$0 !== "string" || value$0[0] === "-")
raise(new Error("No value provided for option " + a$0));
}
} else {
// Positional parameter
do {
name$0 = pos.length > 0 ? pos.shift() : "";
param$0 = name$0 ? params[name$0] : null;
} while (param$0 && !param$0.positional);;
value$0 = a$0;
}
if (param$0)
values[name$0] = value$0;
else
list.push(value$0);
}
required.forEach(function(name) {
if (values[name] === void 0)
raise(new Error("Missing required option: --" + name));
});
return list;
}
var ConsoleCommand = _esdown.class(function(__) { var ConsoleCommand;
__({ constructor: ConsoleCommand = function(cmd) {
this.fallback = cmd;
this.commands = {};
},
add: function(name, cmd) {
this.commands[name] = cmd;
return this;
},
run: function(args) {
// Peel off the "node" and main module args
args || (args = process.argv.slice(2));
var name = args[0] || "",
cmd = this.fallback;
if (name && has(this.commands, name)) {
cmd = this.commands[name];
args = args.slice(1);
}
if (!cmd)
raise(new Error("Invalid command"));
return cmd.execute.apply(cmd, parse(args, cmd.params));
}});
});
exports.ConsoleCommand = ConsoleCommand;
}).call(this, _M19);
(function(exports) {
var ConsoleIO = _esdown.class(function(__) { var ConsoleIO;
__({ constructor: ConsoleIO = function() {
this._inStream = process.stdin;
this._outStream = process.stdout;
this._outEnc = "utf8";
this._inEnc = "utf8";
this.inputEncoding = "utf8";
this.outputEncoding = "utf8";
},
get inputEncoding() {
return this._inEnc;
},
set inputEncoding(enc) {
this._inStream.setEncoding(this._inEnc = enc);
},
get outputEncoding() {
return this._outEnc;
},
set outputEncoding(enc) {
this._outStream.setEncoding(this._outEnc = enc);
},
readLine: function() { var __this = this;
return new Promise(function(resolve) {
var listener;
listener = function(data) {
resolve(data);
__this._inStream.removeListener("data", listener);
__this._inStream.pause();
};
__this._inStream.resume();
__this._inStream.on("data", listener);
});
},
writeLine: function(msg) {
console.log(msg);
},
write: function(msg) {
process.stdout.write(msg);
}});
});
exports.ConsoleIO = ConsoleIO;
}).call(this, _M20);
(function(exports) {
var ConsoleStyle = {
green: function(msg) { return "\x1B[32m" + (msg) + "\x1B[39m" },
red: function(msg) { return "\x1B[31m" + (msg) + "\x1B[39m" },
gray: function(msg) { return "\x1B[90m" + (msg) + "\x1B[39m" },
bold: function(msg) { return "\x1B[1m" + (msg) + "\x1B[22m" },
};
exports.ConsoleStyle = ConsoleStyle;
}).call(this, _M21);
(function(exports) {
Object.keys(_M19).forEach(function(k) { exports[k] = _M19[k]; });
Object.keys(_M20).forEach(function(k) { exports[k] = _M20[k]; });
Object.keys(_M21).forEach(function(k) { exports[k] = _M21[k]; });
}).call(this, _M10);
(function(exports) {
Object.keys(_M10).forEach(function(k) { exports[k] = _M10[k]; });
}).call(this, _M4);
(function(exports) {
var FS = _M2;
// Wraps a standard Node async function with a promise
// generating function
function wrap(fn) {
return function() { for (var args = [], __$0 = 0; __$0 < arguments.length; ++__$0) args.push(arguments[__$0]);
return new Promise(function(resolve, reject) {
args.push(function(err, data) {
if (err) reject(err);
else resolve(data);
});
fn.apply(null, args);
});
};
}
function exists(path) {
return new Promise(function(resolve) {
FS.exists(path, function(result) { return resolve(result); });
});
}
var
readFile = wrap(FS.readFile),
close = wrap(FS.close),
open = wrap(FS.open),
read = wrap(FS.read),
write = wrap(FS.write),
rename = wrap(FS.rename),
truncate = wrap(FS.truncate),
rmdir = wrap(FS.rmdir),
fsync = wrap(FS.fsync),
mkdir = wrap(FS.mkdir),
sendfile = wrap(FS.sendfile),
readdir = wrap(FS.readdir),
fstat = wrap(FS.fstat),
lstat = wrap(FS.lstat),
stat = wrap(FS.stat),
readlink = wrap(FS.readlink),
symlink = wrap(FS.symlink),
link = wrap(FS.link),
unlink = wrap(FS.unlink),
fchmod = wrap(FS.fchmod),
lchmod = wrap(FS.lchmod),
chmod = wrap(FS.chmod),
lchown = wrap(FS.lchown),
fchown = wrap(FS.fchown),
chown = wrap(FS.chown),
utimes = wrap(FS.utimes),
futimes = wrap(FS.futimes),
writeFile = wrap(FS.writeFile),
appendFile = wrap(FS.appendFile),
realpath = wrap(FS.realpath)
;
exports.exists = exists;
exports.readFile = readFile;
exports.close = close;
exports.open = open;
exports.read = read;
exports.write = write;
exports.rename = rename;
exports.truncate = truncate;
exports.rmdir = rmdir;
exports.fsync = fsync;
exports.mkdir = mkdir;
exports.sendfile = sendfile;
exports.readdir = readdir;
exports.fstat = fstat;
exports.lstat = lstat;
exports.stat = stat;
exports.readlink = readlink;
exports.symlink = symlink;
exports.link = link;
exports.unlink = unlink;
exports.fchmod = fchmod;
exports.lchmod = lchmod;
exports.chmod = chmod;
exports.lchown = lchown;
exports.fchown = fchown;
exports.chown = chown;
exports.utimes = utimes;
exports.futimes = futimes;
exports.writeFile = writeFile;
exports.appendFile = appendFile;
exports.realpath = realpath;
}).call(this, _M5);
(function(exports) {
function Node(type, start, end) {
this.type = type;
this.start = start;
this.end = end;
}
function Identifier(value, context, start, end) {
this.type = "Identifier";
this.start = start;
this.end = end;
this.value = value;
this.context = context;
}
function AtName(value, start, end) {
this.type = "AtName";
this.start = start;
this.end = end;
this.value = value;
}
function NumberLiteral(value, start, end) {
this.type = "NumberLiteral";
this.start = start;
this.end = end;
this.value = value;
}
function StringLiteral(value, start, end) {
this.type = "StringLiteral";
this.start = start;
this.end = end;
this.value = value;
}
function TemplatePart(value, raw, isEnd, start, end) {
this.type = "TemplatePart";
this.start = start;
this.end = end;
this.value = value;
this.raw = raw;
this.templateEnd = isEnd;
}
function RegularExpression(value, flags, start, end) {
this.type = "RegularExpression";
this.start = start;
this.end = end;
this.value = value;
this.flags = flags;
}
function BooleanLiteral(value, start, end) {
this.type = "BooleanLiteral";
this.start = start;
this.end = end;
this.value = value;
}
function NullLiteral(start, end) {
this.type = "NullLiteral";
this.start = start;
this.end = end;
}
function Script(statements, start, end) {
this.type = "Script";
this.start = start;
this.end = end;
this.statements = statements;
}
function Module(statements, start, end) {
this.type = "Module";
this.start = start;
this.end = end;
this.statements = statements;
}
function ThisExpression(start, end) {
this.type = "ThisExpression";
this.start = start;
this.end = end;
}
function SuperKeyword(start, end) {
this.type = "SuperKeyword";
this.start = start;
this.end = end;
}
function SequenceExpression(list, start, end) {
this.type = "SequenceExpression";
this.start = start;
this.end = end;
this.expressions = list;
}
function AssignmentExpression(op, left, right, start, end) {
this.type = "AssignmentExpression";
this.start = start;
this.end = end;
this.operator = op;
this.left = left;
this.right = right;
}
function SpreadExpression(expr, start, end) {
this.type = "SpreadExpression";
this.start = start;
this.end = end;
this.expression = expr;
}
function YieldExpression(expr, delegate, start, end) {
this.type = "YieldExpression";
this.start = start;
this.end = end;
this.delegate = delegate;
this.expression = expr;
}
function ConditionalExpression(test, cons, alt, start, end) {
this.type = "ConditionalExpression";
this.start = start;
this.end = end;
this.test = test;
this.consequent = cons;
this.alternate = alt;
}
function BinaryExpression(op, left, right, start, end) {
this.type = "BinaryExpression";
this.start = start;
this.end = end;
this.operator = op;
this.left = left;
this.right = right;
}
function UpdateExpression(op, expr, prefix, start, end) {
this.type = "UpdateExpression";
this.start = start;
this.end = end;
this.operator = op;
this.expression = expr;
this.prefix = prefix;
}
function UnaryExpression(op, expr, start, end) {
this.type = "UnaryExpression";
this.start = start;
this.end = end;
this.operator = op;
this.expression = expr;
}
function MemberExpression(obj, prop, computed, start, end) {
this.type = "MemberExpression";
this.start = start;
this.end = end;
this.object = obj;
this.property = prop;
this.computed = computed;
}
function MetaProperty(left, right, start, end) {
this.type = "MetaProperty";
this.start = start;
this.end = end;
this.left = left;
this.right = right;
}
function BindExpression(left, right, start, end) {
this.type = "BindExpression";
this.start = start;
this.end = end;
this.left = left;
this.right = right;
}
function CallExpression(callee, args, start, end) {
this.type = "CallExpression";
this.start = start;
this.end = end;
this.callee = callee;
this.arguments = args;
}
function TaggedTemplateExpression(tag, template, start, end) {
this.type = "TaggedTemplateExpression";
this.start = start;
this.end = end;
this.tag = tag;
this.template = template;
}
function NewExpression(callee, args, start, end) {
this.type = "NewExpression";
this.start = start;
this.end = end;
this.callee = callee;
this.arguments = args;
}
function ParenExpression(expr, start, end) {
this.type = "ParenExpression";
this.start = start;
this.end = end;
this.expression = expr;
}
function ObjectLiteral(props, comma, start, end) {
this.type = "ObjectLiteral";
this.start = start;
this.end = end;
this.properties = props;
this.trailingComma = comma;
}
function ComputedPropertyName(expr, start, end) {
this.type = "ComputedPropertyName";
this.start = start;
this.end = end;
this.expression = expr;
}
function PropertyDefinition(name, expr, start, end) {
this.type = "PropertyDefinition";
this.start = start;
this.end = end;
this.name = name;
this.expression = expr;
}
function ObjectPattern(props, comma, start, end) {
this.type = "ObjectPattern";
this.start = start;
this.end = end;
this.properties = props;
this.trailingComma = comma;
}
function PatternProperty(name, pattern, initializer, start, end) {
this.type = "PatternProperty";
this.start = start;
this.end = end;
this.name = name;
this.pattern = pattern;
this.initializer = initializer;
}
function ArrayPattern(elements, comma, start, end) {
this.type = "ArrayPattern";
this.start = start;
this.end = end;
this.elements = elements;
this.trailingComma = comma;
}
function PatternElement(pattern, initializer, start, end) {
this.type = "PatternElement";
this.start = start;
this.end = end;
this.pattern = pattern;
this.initializer = initializer;
}
function PatternRestElement(pattern, start, end) {
this.type = "PatternRestElement";
this.start = start;
this.end = end;
this.pattern = pattern;
}
function MethodDefinition(isStatic, kind, name, params, body, start, end) {
this.type = "MethodDefinition";
this.start = start;
this.end = end;
this.static = isStatic;
this.kind = kind;
this.name = name;
this.params = params;
this.body = body;
}
function ArrayLiteral(elements, comma, start, end) {
this.type = "ArrayLiteral";
this.start = start;
this.end = end;
this.elements = elements;
this.trailingComma = comma;
}
function TemplateExpression(lits, subs, start, end) {
this.type = "TemplateExpression";
this.start = start;
this.end = end;
this.literals = lits;
this.substitutions = subs;
}
function Block(statements, start, end) {
this.type = "Block";
this.start = start;
this.end = end;
this.statements = statements;
}
function LabelledStatement(label, statement, start, end) {
this.type = "LabelledStatement";
this.start = start;
this.end = end;
this.label = label;
this.statement = statement;
}
function ExpressionStatement(expr, start, end) {
this.type = "ExpressionStatement";
this.start = start;
this.end = end;
this.expression = expr;
}
function Directive(value, expr, start, end) {
this.type = "Directive";
this.start = start;
this.end = end;
this.value = value;
this.expression = expr;
}
function EmptyStatement(start, end) {
this.type = "EmptyStatement";
this.start = start;
this.end = end;
}
function VariableDeclaration(kind, list, start, end) {
this.type = "VariableDeclaration";
this.start = start;
this.end = end;
this.kind = kind;
this.declarations = list;
}
function VariableDeclarator(pattern, initializer, start, end) {
this.type = "VariableDeclarator";
this.start = start;
this.end = end;
this.pattern = pattern;
this.initializer = initializer;
}
function ReturnStatement(arg, start, end) {
this.type = "ReturnStatement";
this.start = start;
this.end = end;
this.argument = arg;
}
function BreakStatement(label, start, end) {
this.type = "BreakStatement";
this.start = start;
this.end = end;
this.label = label;
}
function ContinueStatement(label, start, end) {
this.type = "ContinueStatement";
this.start = start;
this.end = end;
this.label = label;
}
function ThrowStatement(expr, start, end) {
this.type = "ThrowStatement";
this.start = start;
this.end = end;
this.expression = expr;
}
function DebuggerStatement(start, end) {
this.type = "DebuggerStatement";
this.start = start;
this.end = end;
}
function IfStatement(test, cons, alt, start, end) {
this.type = "IfStatement";
this.start = start;
this.end = end;
this.test = test;
this.consequent = cons;
this.alternate = alt;
}
function DoWhileStatement(body, test, start, end) {
this.type = "DoWhileStatement";
this.start = start;
this.end = end;
this.body = body;
this.test = test;
}
function WhileStatement(test, body, start, end) {
this.type = "WhileStatement";
this.start = start;
this.end = end;
this.test = test;
this.body = body;
}
function ForStatement(initializer, test, update, body, start, end) {
this.type = "ForStatement";
this.start = start;
this.end = end;
this.initializer = initializer;
this.test = test;
this.update = update;
this.body = body;
}
function ForInStatement(left, right, body, start, end) {
this.type = "ForInStatement";
this.start = start;
this.end = end;
this.left = left;
this.right = right;
this.body = body;
}
function ForOfStatement(async, left, right, body, start, end) {
this.type = "ForOfStatement";
this.async = async;
this.start = start;
this.end = end;
this.left = left;
this.right = right;
this.body = body;
}
function WithStatement(object, body, start, end) {
this.type = "WithStatement";
this.start = start;
this.end = end;
this.object = object;
this.body = body;
}
function SwitchStatement(desc, cases, start, end) {
this.type = "SwitchStatement";
this.start = start;
this.end = end;
this.descriminant = desc;
this.cases = cases;
}
function SwitchCase(test, cons, start, end) {
this.type = "SwitchCase";
this.start = start;
this.end = end;
this.test = test;
this.consequent = cons;
}
function TryStatement(block, handler, fin, start, end) {
this.type = "TryStatement";
this.start = start;
this.end = end;
this.block = block;
this.handler = handler;
this.finalizer = fin;
}
function CatchClause(param, body, start, end) {
this.type = "CatchClause";
this.start = start;
this.end = end;
this.param = param;
this.body = body;
}
function FunctionDeclaration(kind, identifier, params, body, start, end) {
this.type = "FunctionDeclaration";
this.start = start;
this.end = end;
this.kind = kind;
this.identifier = identifier;
this.params = params;
this.body = body;
}
function FunctionExpression(kind, identifier, params, body, start, end) {
this.type = "FunctionExpression";
this.start = start;
this.end = end;
this.kind = kind;
this.identifier = identifier;
this.params = params;
this.body = body;
}
function FormalParameter(pattern, initializer, start, end) {
this.type = "FormalParameter";
this.start = start;
this.end = end;
this.pattern = pattern;
this.initializer = initializer;
}
function RestParameter(identifier, start, end) {
this.type = "RestParameter";
this.start = start;
this.end = end;
this.identifier = identifier;
}
function FunctionBody(statements, start, end) {
this.type = "FunctionBody";
this.start = start;
this.end = end;
this.statements = statements;
}
function ArrowFunctionHead(params, start, end) {
this.type = "ArrowFunctionHead";
this.start = start;
this.end = end;
this.parameters = params;
}
function ArrowFunction(kind, params, body, start, end) {
this.type = "ArrowFunction";
this.start = start;
this.end = end;
this.kind = kind;
this.params = params;
this.body = body;
}
function ClassDeclaration(identifier, base, body, start, end) {
this.type = "ClassDeclaration";
this.start = start;
this.end = end;
this.identifier = identifier;
this.base = base;
this.body = body;
}
function ClassExpression(identifier, base, body, start, end) {
this.type = "ClassExpression";
this.start = start;
this.end = end;
this.identifier = identifier;
this.base = base;
this.body = body;
}
function ClassBody(elems, start, end) {
this.type = "ClassBody";
this.start = start;
this.end = end;
this.elements = elems;
}
function EmptyClassElement(start, end) {
this.type = "EmptyClassElement";
this.start = start;
this.end = end;
}
function PrivateDeclaration(isStatic, name, initializer, start, end) {
this.type = "PrivateDeclaration";
this.start = start;
this.end = end;
this.static = isStatic;
this.name = name;
this.initializer = initializer;
}
function ImportDeclaration(imports, from, start, end) {
this.type = "ImportDeclaration";
this.start = start;
this.end = end;
this.imports = imports;
this.from = from;
}
function NamespaceImport(identifier, start, end) {
this.type = "NamespaceImport";
this.start = start;
this.end = end;
this.identifier = identifier;
}
function NamedImports(specifiers, start, end) {
this.type = "NamedImports";
this.start = start;
this.end = end;
this.specifiers = specifiers;
}
function DefaultImport(identifier, imports, start, end) {
this.type = "DefaultImport";
this.start = start;
this.end = end;
this.identifier = identifier;
this.imports = imports;
}
function ImportSpecifier(imported, local, start, end) {
this.type = "ImportSpecifier";
this.start = start;
this.end = end;
this.imported = imported;
this.local = local;
}
function ExportDeclaration(declaration, start, end) {
this.type = "ExportDeclaration";
this.start = start;
this.end = end;
this.declaration = declaration;
}
function ExportDefault(binding, start, end) {
this.type = "ExportDefault";
this.binding = binding;
this.start = start;
this.end = end;
}
function ExportNameList(specifiers, from, start, end) {
this.type = "ExportNameList";
this.start = start;
this.end = end;
this.specifiers = specifiers;
this.from = from;
}
function ExportNamespace(identifier, from, start, end) {
this.type = "ExportNamespace";
this.start = start;
this.end = end;
this.identifier = identifier;
this.from = from;
}
function ExportDefaultFrom(identifier, from, start, end) {
this.type = "ExportDefaultFrom";
this.start = start;
this.end = end;
this.identifier = identifier;
this.from = from;
}
function ExportSpecifier(local, exported, start, end) {
this.type = "ExportSpecifier";
this.start = start;
this.end = end;
this.local = local;
this.exported = exported;
}
exports.Node = Node;
exports.Identifier = Identifier;
exports.AtName = AtName;
exports.NumberLiteral = NumberLiteral;
exports.StringLiteral = StringLiteral;
exports.TemplatePart = TemplatePart;
exports.RegularExpression = RegularExpression;
exports.BooleanLiteral = BooleanLiteral;
exports.NullLiteral = NullLiteral;
exports.Script = Script;
exports.Module = Module;
exports.ThisExpression = ThisExpression;
exports.SuperKeyword = SuperKeyword;
exports.SequenceExpression = SequenceExpression;
exports.AssignmentExpression = AssignmentExpression;
exports.SpreadExpression = SpreadExpression;
exports.YieldExpression = YieldExpression;
exports.ConditionalExpression = ConditionalExpression;
exports.BinaryExpression = BinaryExpression;
exports.UpdateExpression = UpdateExpression;
exports.UnaryExpression = UnaryExpression;
exports.MemberExpression = MemberExpression;
exports.MetaProperty = MetaProperty;
exports.BindExpression = BindExpression;
exports.CallExpression = CallExpression;
exports.TaggedTemplateExpression = TaggedTemplateExpression;
exports.NewExpression = NewExpression;
exports.ParenExpression = ParenExpression;
exports.ObjectLiteral = ObjectLiteral;
exports.ComputedPropertyName = ComputedPropertyName;
exports.PropertyDefinition = PropertyDefinition;
exports.ObjectPattern = ObjectPattern;
exports.PatternProperty = PatternProperty;
exports.ArrayPattern = ArrayPattern;
exports.PatternElement = PatternElement;
exports.PatternRestElement = PatternRestElement;
exports.MethodDefinition = MethodDefinition;
exports.ArrayLiteral = ArrayLiteral;
exports.TemplateExpression = TemplateExpression;
exports.Block = Block;
exports.LabelledStatement = LabelledStatement;
exports.ExpressionStatement = ExpressionStatement;
exports.Directive = Directive;
exports.EmptyStatement = EmptyStatement;
exports.VariableDeclaration = VariableDeclaration;
exports.VariableDeclarator = VariableDeclarator;
exports.ReturnStatement = ReturnStatement;
exports.BreakStatement = BreakStatement;
exports.ContinueStatement = ContinueStatement;
exports.ThrowStatement = ThrowStatement;
exports.DebuggerStatement = DebuggerStatement;
exports.IfStatement = IfStatement;
exports.DoWhileStatement = DoWhileStatement;
exports.WhileStatement = WhileStatement;
exports.ForStatement = ForStatement;
exports.ForInStatement = ForInStatement;
exports.ForOfStatement = ForOfStatement;
exports.WithStatement = WithStatement;
exports.SwitchStatement = SwitchStatement;
exports.SwitchCase = SwitchCase;
exports.TryStatement = TryStatement;
exports.CatchClause = CatchClause;
exports.FunctionDeclaration = FunctionDeclaration;
exports.FunctionExpression = FunctionExpression;
exports.FormalParameter = FormalParameter;
exports.RestParameter = RestParameter;
exports.FunctionBody = FunctionBody;
exports.ArrowFunctionHead = ArrowFunctionHead;
exports.ArrowFunction = ArrowFunction;
exports.ClassDeclaration = ClassDeclaration;
exports.ClassExpression = ClassExpression;
exports.ClassBody = ClassBody;
exports.EmptyClassElement = EmptyClassElement;
exports.PrivateDeclaration = PrivateDeclaration;
exports.ImportDeclaration = ImportDeclaration;
exports.NamespaceImport = NamespaceImport;
exports.NamedImports = NamedImports;
exports.DefaultImport = DefaultImport;
exports.ImportSpecifier = ImportSpecifier;
exports.ExportDeclaration = ExportDeclaration;
exports.ExportDefault = ExportDefault;
exports.ExportNameList = ExportNameList;
exports.ExportNamespace = ExportNamespace;
exports.ExportDefaultFrom = ExportDefaultFrom;
exports.ExportSpecifier = ExportSpecifier;
}).call(this, _M28);
(function(exports) {
/*
NOTE: We forego using classes and class-based inheritance because at this time
super() tends to be slow in transpiled code. Instead, we use regular constructor
functions and give them a common prototype property.
*/
var Nodes = _M28;
Object.keys(_M28).forEach(function(k) { exports[k] = _M28[k]; });
function isNode(x) {
return x !== null && typeof x === "object" && typeof x.type === "string";
}
var NodeBase = _esdown.class(function(__) { var NodeBase; __({ constructor: NodeBase = function() {} });
__({ children: function() {
var keys = Object.keys(this),
list = [];
for (var i$0 = 0; i$0 < keys.length; ++i$0) {
if (keys[i$0] === "parent")
break;
var value$0 = this[keys[i$0]];
if (Array.isArray(value$0)) {
for (var j = 0; j < value$0.length; ++j)
if (isNode(value$0[j]))
list.push(value$0[j]);
} else if (isNode(value$0)) {
list.push(value$0);
}
}
return list;
}});
});
Object.keys(Nodes).forEach(function(k) { return Nodes[k].prototype = NodeBase.prototype; });
}).call(this, _M24);
(function(exports) {
// Unicode 6.3.0 | 2013-09-25, 18:58:50 GMT [MD]
var IDENTIFIER = [
36,0,2,
48,9,3,
65,25,2,
95,0,2,
97,25,2,
170,0,2,
181,0,2,
183,0,3,
186,0,2,
192,22,2,
216,30,2,
248,457,2,
710,11,2,
736,4,2,
748,0,2,
750,0,2,
768,111,3,
880,4,2,
886,1,2,
890,3,2,
902,0,2,
903,0,3,
904,2,2,
908,0,2,
910,19,2,
931,82,2,
1015,138,2,
1155,4,3,
1162,157,2,
1329,37,2,
1369,0,2,
1377,38,2,
1425,44,3,
1471,0,3,
1473,1,3,
1476,1,3,
1479,0,3,
1488,26,2,
1520,2,2,
1552,10,3,
1568,42,2,
1611,30,3,
1646,1,2,
1648,0,3,
1649,98,2,
1749,0,2,
1750,6,3,
1759,5,3,
1765,1,2,
1767,1,3,
1770,3,3,
1774,1,2,
1776,9,3,
1786,2,2,
1791,0,2,
1808,0,2,
1809,0,3,
1810,29,2,
1840,26,3,
1869,88,2,
1958,10,3,
1969,0,2,
1984,9,3,
1994,32,2,
2027,8,3,
2036,1,2,
2042,0,2,
2048,21,2,
2070,3,3,
2074,0,2,
2075,8,3,
2084,0,2,
2085,2,3,
2088,0,2,
2089,4,3,
2112,24,2,
2137,2,3,
2208,0,2,
2210,10,2,
2276,26,3,
2304,3,3,
2308,53,2,
2362,2,3,
2365,0,2,
2366,17,3,
2384,0,2,
2385,6,3,
2392,9,2,
2402,1,3,
2406,9,3,
2417,6,2,
2425,6,2,
2433,2,3,
2437,7,2,
2447,1,2,
2451,21,2,
2474,6,2,
2482,0,2,
2486,3,2,
2492,0,3,
2493,0,2,
2494,6,3,
2503,1,3,
2507,2,3,
2510,0,2,
2519,0,3,
2524,1,2,
2527,2,2,
2530,1,3,
2534,9,3,
2544,1,2,
2561,2,3,
2565,5,2,
2575,1,2,
2579,21,2,
2602,6,2,
2610,1,2,
2613,1,2,
2616,1,2,
2620,0,3,
2622,4,3,
2631,1,3,
2635,2,3,
2641,0,3,
2649,3,2,
2654,0,2,
2662,11,3,
2674,2,2,
2677,0,3,
2689,2,3,
2693,8,2,
2703,2,2,
2707,21,2,
2730,6,2,
2738,1,2,
2741,4,2,
2748,0,3,
2749,0,2,
2750,7,3,
2759,2,3,
2763,2,3,
2768,0,2,
2784,1,2,
2786,1,3,
2790,9,3,
2817,2,3,
2821,7,2,
2831,1,2,
2835,21,2,
2858,6,2,
2866,1,2,
2869,4,2,
2876,0,3,
2877,0,2,
2878,6,3,
2887,1,3,
2891,2,3,
2902,1,3,
2908,1,2,
2911,2,2,
2914,1,3,
2918,9,3,
2929,0,2,
2946,0,3,
2947,0,2,
2949,5,2,
2958,2,2,
2962,3,2,
2969,1,2,
2972,0,2,
2974,1,2,
2979,1,2,
2984,2,2,
2990,11,2,
3006,4,3,
3014,2,3,
3018,3,3,
3024,0,2,
3031,0,3,
3046,9,3,
3073,2,3,
3077,7,2,
3086,2,2,
3090,22,2,
3114,9,2,
3125,4,2,
3133,0,2,
3134,6,3,
3142,2,3,
3146,3,3,
3157,1,3,
3160,1,2,
3168,1,2,
3170,1,3,
3174,9,3,
3202,1,3,
3205,7,2,
3214,2,2,
3218,22,2,
3242,9,2,
3253,4,2,
3260,0,3,
3261,0,2,
3262,6,3,
3270,2,3,
3274,3,3,
3285,1,3,
3294,0,2,
3296,1,2,
3298,1,3,
3302,9,3,
3313,1,2,
3330,1,3,
3333,7,2,
3342,2,2,
3346,40,2,
3389,0,2,
3390,6,3,
3398,2,3,
3402,3,3,
3406,0,2,
3415,0,3,
3424,1,2,
3426,1,3,
3430,9,3,
3450,5,2,
3458,1,3,
3461,17,2,
3482,23,2,
3507,8,2,
3517,0,2,
3520,6,2,
3530,0,3,
3535,5,3,
3542,0,3,
3544,7,3,
3570,1,3,
3585,47,2,
3633,0,3,
3634,1,2,
3636,6,3,
3648,6,2,
3655,7,3,
3664,9,3,
3713,1,2,
3716,0,2,
3719,1,2,
3722,0,2,
3725,0,2,
3732,3,2,
3737,6,2,
3745,2,2,
3749,0,2,
3751,0,2,
3754,1,2,
3757,3,2,
3761,0,3,
3762,1,2,
3764,5,3,
3771,1,3,
3773,0,2,
3776,4,2,
3782,0,2,
3784,5,3,
3792,9,3,
3804,3,2,
3840,0,2,
3864,1,3,
3872,9,3,
3893,0,3,
3895,0,3,
3897,0,3,
3902,1,3,
3904,7,2,
3913,35,2,
3953,19,3,
3974,1,3,
3976,4,2,
3981,10,3,
3993,35,3,
4038,0,3,
4096,42,2,
4139,19,3,
4159,0,2,
4160,9,3,
4176,5,2,
4182,3,3,
4186,3,2,
4190,2,3,
4193,0,2,
4194,2,3,
4197,1,2,
4199,6,3,
4206,2,2,
4209,3,3,
4213,12,2,
4226,11,3,
4238,0,2,
4239,14,3,
4256,37,2,
4295,0,2,
4301,0,2,
4304,42,2,
4348,332,2,
4682,3,2,
4688,6,2,
4696,0,2,
4698,3,2,
4704,40,2,
4746,3,2,
4752,32,2,
4786,3,2,
4792,6,2,
4800,0,2,
4802,3,2,
4808,14,2,
4824,56,2,
4882,3,2,
4888,66,2,
4957,2,3,
4969,8,3,
4992,15,2,
5024,84,2,
5121,619,2,
5743,16,2,
5761,25,2,
5792,74,2,
5870,2,2,
5888,12,2,
5902,3,2,
5906,2,3,
5920,17,2,
5938,2,3,
5952,17,2,
5970,1,3,
5984,12,2,
5998,2,2,
6002,1,3,
6016,51,2,
6068,31,3,
6103,0,2,
6108,0,2,
6109,0,3,
6112,9,3,
6155,2,3,
6160,9,3,
6176,87,2,
6272,40,2,
6313,0,3,
6314,0,2,
6320,69,2,
6400,28,2,
6432,11,3,
6448,11,3,
6470,9,3,
6480,29,2,
6512,4,2,
6528,43,2,
6576,16,3,
6593,6,2,
6600,1,3,
6608,10,3,
6656,22,2,
6679,4,3,
6688,52,2,
6741,9,3,
6752,28,3,
6783,10,3,
6800,9,3,
6823,0,2,
6912,4,3,
6917,46,2,
6964,16,3,
6981,6,2,
6992,9,3,
7019,8,3,
7040,2,3,
7043,29,2,
7073,12,3,
7086,1,2,
7088,9,3,
7098,43,2,
7142,13,3,
7168,35,2,
7204,19,3,
7232,9,3,
7245,2,2,
7248,9,3,
7258,35,2,
7376,2,3,
7380,20,3,
7401,3,2,
7405,0,3,
7406,3,2,
7410,2,3,
7413,1,2,
7424,191,2,
7616,38,3,
7676,3,3,
7680,277,2,
7960,5,2,
7968,37,2,
8008,5,2,
8016,7,2,
8025,0,2,
8027,0,2,
8029,0,2,
8031,30,2,
8064,52,2,
8118,6,2,
8126,0,2,
8130,2,2,
8134,6,2,
8144,3,2,
8150,5,2,
8160,12,2,
8178,2,2,
8182,6,2,
8204,1,3,
8255,1,3,
8276,0,3,
8305,0,2,
8319,0,2,
8336,12,2,
8400,12,3,
8417,0,3,
8421,11,3,
8450,0,2,
8455,0,2,
8458,9,2,
8469,0,2,
8472,5,2,
8484,0,2,
8486,0,2,
8488,0,2,
8490,15,2,
8508,3,2,
8517,4,2,
8526,0,2,
8544,40,2,
11264,46,2,
11312,46,2,
11360,132,2,
11499,3,2,
11503,2,3,
11506,1,2,
11520,37,2,
11559,0,2,
11565,0,2,
11568,55,2,
11631,0,2,
11647,0,3,
11648,22,2,
11680,6,2,
11688,6,2,
11696,6,2,
11704,6,2,
11712,6,2,
11720,6,2,
11728,6,2,
11736,6,2,
11744,31,3,
12293,2,2,
12321,8,2,
12330,5,3,
12337,4,2,
12344,4,2,
12353,85,2,
12441,1,3,
12443,4,2,
12449,89,2,
12540,3,2,
12549,40,2,
12593,93,2,
12704,26,2,
12784,15,2,
13312,6581,2,
19968,20940,2,
40960,1164,2,
42192,45,2,
42240,268,2,
42512,15,2,
42528,9,3,
42538,1,2,
42560,46,2,
42607,0,3,
42612,9,3,
42623,24,2,
42655,0,3,
42656,79,2,
42736,1,3,
42775,8,2,
42786,102,2,
42891,3,2,
42896,3,2,
42912,10,2,
43000,9,2,
43010,0,3,
43011,2,2,
43014,0,3,
43015,3,2,
43019,0,3,
43020,22,2,
43043,4,3,
43072,51,2,
43136,1,3,
43138,49,2,
43188,16,3,
43216,9,3,
43232,17,3,
43250,5,2,
43259,0,2,
43264,9,3,
43274,27,2,
43302,7,3,
43312,22,2,
43335,12,3,
43360,28,2,
43392,3,3,
43396,46,2,
43443,13,3,
43471,0,2,
43472,9,3,
43520,40,2,
43561,13,3,
43584,2,2,
43587,0,3,
43588,7,2,
43596,1,3,
43600,9,3,
43616,22,2,
43642,0,2,
43643,0,3,
43648,47,2,
43696,0,3,
43697,0,2,
43698,2,3,
43701,1,2,
43703,1,3,
43705,4,2,
43710,1,3,
43712,0,2,
43713,0,3,
43714,0,2,
43739,2,2,
43744,10,2,
43755,4,3,
43762,2,2,
43765,1,3,
43777,5,2,
43785,5,2,
43793,5,2,
43808,6,2,
43816,6,2,
43968,34,2,
44003,7,3,
44012,1,3,
44016,9,3,
44032,11171,2,
55216,22,2,
55243,48,2,
63744,365,2,
64112,105,2,
64256,6,2,
64275,4,2,
64285,0,2,
64286,0,3,
64287,9,2,
64298,12,2,
64312,4,2,
64318,0,2,
64320,1,2,
64323,1,2,
64326,107,2,
64467,362,2,
64848,63,2,
64914,53,2,
65008,11,2,
65024,15,3,
65056,6,3,
65075,1,3,
65101,2,3,
65136,4,2,
65142,134,2,
65296,9,3,
65313,25,2,
65343,0,3,
65345,25,2,
65382,88,2,
65474,5,2,
65482,5,2,
65490,5,2,
65498,2,2,
65536,11,2,
65549,25,2,
65576,18,2,
65596,1,2,
65599,14,2,
65616,13,2,
65664,122,2,
65856,52,2,
66045,0,3,
66176,28,2,
66208,48,2,
66304,30,2,
66352,26,2,
66432,29,2,
66464,35,2,
66504,7,2,
66513,4,2,
66560,157,2,
66720,9,3,
67584,5,2,
67592,0,2,
67594,43,2,
67639,1,2,
67644,0,2,
67647,22,2,
67840,21,2,
67872,25,2,
67968,55,2,
68030,1,2,
68096,0,2,
68097,2,3,
68101,1,3,
68108,3,3,
68112,3,2,
68117,2,2,
68121,26,2,
68152,2,3,
68159,0,3,
68192,28,2,
68352,53,2,
68416,21,2,
68448,18,2,
68608,72,2,
69632,2,3,
69635,52,2,
69688,14,3,
69734,9,3,
69760,2,3,
69763,44,2,
69808,10,3,
69840,24,2,
69872,9,3,
69888,2,3,
69891,35,2,
69927,13,3,
69942,9,3,
70016,2,3,
70019,47,2,
70067,13,3,
70081,3,2,
70096,9,3,
71296,42,2,
71339,12,3,
71360,9,3,
73728,878,2,
74752,98,2,
77824,1070,2,
92160,568,2,
93952,68,2,
94032,0,2,
94033,45,3,
94095,3,3,
94099,12,2,
110592,1,2,
119141,4,3,
119149,5,3,
119163,7,3,
119173,6,3,
119210,3,3,
119362,2,3,
119808,84,2,
119894,70,2,
119966,1,2,
119970,0,2,
119973,1,2,
119977,3,2,
119982,11,2,
119995,0,2,
119997,6,2,
120005,64,2,
120071,3,2,
120077,7,2,
120086,6,2,
120094,27,2,
120123,3,2,
120128,4,2,
120134,0,2,
120138,6,2,
120146,339,2,
120488,24,2,
120514,24,2,
120540,30,2,
120572,24,2,
120598,30,2,
120630,24,2,
120656,30,2,
120688,24,2,
120714,30,2,
120746,24,2,
120772,7,2,
120782,49,3,
126464,3,2,
126469,26,2,
126497,1,2,
126500,0,2,
126503,0,2,
126505,9,2,
126516,3,2,
126521,0,2,
126523,0,2,
126530,0,2,
126535,0,2,
126537,0,2,
126539,0,2,
126541,2,2,
126545,1,2,
126548,0,2,
126551,0,2,
126553,0,2,
126555,0,2,
126557,0,2,
126559,0,2,
126561,1,2,
126564,0,2,
126567,3,2,
126572,6,2,
126580,3,2,
126585,3,2,
126590,0,2,
126592,9,2,
126603,16,2,
126625,2,2,
126629,4,2,
126635,16,2,
131072,42710,2,
173824,4148,2,
177984,221,2,
194560,541,2,
917760,239,3
];
var WHITESPACE = [
9,0,1,
11,1,1,
32,0,1,
160,0,1,
5760,0,1,
8192,10,1,
8239,0,1,
8287,0,1,
12288,0,1,
65279,0,1
];
exports.IDENTIFIER = IDENTIFIER;
exports.WHITESPACE = WHITESPACE;
}).call(this, _M31);
(function(exports) {
var IDENTIFIER = _M31.IDENTIFIER, WHITESPACE = _M31.WHITESPACE;
function binarySearch(table, val) {
var right = (table.length / 3) - 1,
left = 0,
mid = 0,
test = 0,
offset = 0;
while (left <= right) {
mid = (left + right) >> 1;
offset = mid * 3;
test = table[offset];
if (val < test) {
right = mid - 1;
} else if (val === test || val <= test + table[offset + 1]) {
return table[offset + 2];
} else {
left = mid + 1;
}
}
return 0;
}
function isIdentifierStart(code) {
return binarySearch(IDENTIFIER, code) === 2;
}
function isIdentifierPart(code) {
return binarySearch(IDENTIFIER, code) >= 2;
}
function isWhitespace(code) {
return binarySearch(WHITESPACE, code) === 1;
}
function codePointLength(code) {
return code > 0xffff ? 2 : 1;
}
function codePointAt(str, offset) {
var a = str.charCodeAt(offset);
if (a >= 0xd800 &&
a <= 0xdbff &&
str.length > offset + 1) {
var b$0 = str.charCodeAt(offset + 1);
if (b$0 >= 0xdc00 && b$0 <= 0xdfff)
return (a - 0xd800) * 0x400 + b$0 - 0xdc00 + 0x10000;
}
return a;
}
function codePointString(code) {
if (code > 0x10ffff)
return "";
if (code <= 0xffff)
return String.fromCharCode(code);
// If value is greater than 0xffff, then it must be encoded
// as 2 UTF-16 code units in a surrogate pair.
code -= 0x10000;
return String.fromCharCode(
(code >> 10) + 0xd800,
(code % 0x400) + 0xdc00);
}
exports.isIdentifierStart = isIdentifierStart;
exports.isIdentifierPart = isIdentifierPart;
exports.isWhitespace = isWhitespace;
exports.codePointLength = codePointLength;
exports.codePointAt = codePointAt;
exports.codePointString = codePointString;
}).call(this, _M29);
(function(exports) {
// Performs a binary search on an array
function binarySearch(array, val) {
var right = array.length - 1,
left = 0;
while (left <= right) {
var mid$0 = (left + right) >> 1,
test$0 = array[mid$0];
if (val === test$0)
return mid$0;
if (val < test$0) right = mid$0 - 1;
else left = mid$0 + 1;
}
return left;
}
var LineMap = _esdown.class(function(__) { var LineMap;
__({ constructor: LineMap = function() {
this.lines = [-1];
this.lastLineBreak = -1;
},
addBreak: function(offset) {
if (offset > this.lastLineBreak)
this.lines.push(this.lastLineBreak = offset);
},
locate: function(offset) {
var line = binarySearch(this.lines, offset),
pos = this.lines[line - 1],
column = offset - pos;
return { line: line, column: column, lineOffset: pos + 1 };
}});
});
exports.LineMap = LineMap;
}).call(this, _M30);
(function(exports) {
var isIdentifierStart = _M29.isIdentifierStart,
isIdentifierPart = _M29.isIdentifierPart,
isWhitespace = _M29.isWhitespace,
codePointLength = _M29.codePointLength,
codePointAt = _M29.codePointAt,
codePointString = _M29.codePointString;
var LineMap = _M30.LineMap;
var identifierEscape = /\\u([0-9a-fA-F]{4})/g,
newlineSequence = /\r\n?|[\n\u2028\u2029]/g,
crNewline = /\r\n?/g;
// === Reserved Words ===
var reservedWord = new RegExp("^(?:" +
"break|case|catch|class|const|continue|debugger|default|delete|do|" +
"else|enum|export|extends|false|finally|for|function|if|import|in|" +
"instanceof|new|null|return|super|switch|this|throw|true|try|typeof|" +
"var|void|while|with" +
")$");
var strictReservedWord = new RegExp("^(?:" +
"implements|private|public|interface|package|let|protected|static|yield" +
")$");
// === Punctuators ===
var multiCharPunctuator = new RegExp("^(?:" +
"--|[+]{2}|" +
"&&|[|]{2}|" +
"<<=?|" +
">>>?=?|" +
"[!=]==|" +
"=>|" +
"[\.]{2,3}|" +
"::|" +
"[-+&|<>!=*&\^%\/]=" +
")$");
// === Miscellaneous Patterns ===
var octalEscape = /^(?:[0-3][0-7]{0,2}|[4-7][0-7]?)/,
blockCommentPattern = /\r\n?|[\n\u2028\u2029]|\*\//g,
hexChar = /[0-9a-f]/i;
// === Character type lookup table ===
function makeCharTable() {
var table = [];
for (var i$0 = 0; i$0 < 128; ++i$0) table[i$0] = "";
for (var i$1 = 65; i$1 <= 90; ++i$1) table[i$1] = "identifier";
for (var i$2 = 97; i$2 <= 122; ++i$2) table[i$2] = "identifier";
add("whitespace", "\t\v\f ");
add("newline", "\r\n");
add("decimal-digit", "123456789");
add("punctuator-char", "{[]();,?");
add("punctuator", "<>+-*%&|^!~=:");
add("dot", ".");
add("slash", "/");
add("rbrace", "}");
add("zero", "0");
add("string", "'\"");
add("template", "`");
add("identifier", "$_\\");
add("at", "@");
return table;
function add(type, string) {
string.split("").forEach(function(c) { return table[c.charCodeAt(0)] = type; });
}
}
var charTable = makeCharTable();
// Returns true if the character is a valid identifier part
function isIdentifierPartAscii(c) {
return c > 64 && c < 91 ||
c > 96 && c < 123 ||
c > 47 && c < 58 ||
c === 36 ||
c === 95;
}
// Returns true if the specified character is a newline
function isNewlineChar(c) {
switch (c) {
case "\r":
case "\n":
case "\u2028":
case "\u2029":
return true;
}
return false;
}
// Returns true if the specified character can exist in a non-starting position
function isPunctuatorNext(c) {
switch (c) {
case "+":
case "-":
case "&":
case "|":
case "<":
case ">":
case "=":
case ".":
case ":":
return true;
}
return false;
}
// Returns true if the specified string is a reserved word
function isReservedWord(word) {
return reservedWord.test(word);
}
// Returns true if the specified string is a strict mode reserved word
function isStrictReservedWord(word) {
return strictReservedWord.test(word);
}
var Scanner = _esdown.class(function(__) { var Scanner;
__({ constructor: Scanner = function(input) {
this.input = input || "";
this.offset = 0;
this.length = this.input.length;
this.lineMap = new LineMap;
this.value = "";
this.number = 0;
this.regexFlags = "";
this.templateEnd = false;
this.newlineBefore = false;
this.strictError = "";
this.start = 0;
this.end = 0;
},
skip: function() {
return this.next("skip");
},
next: function(context) {
if (this.type !== "COMMENT")
this.newlineBefore = false;
this.strictError = "";
do {
this.start = this.offset;
this.type =
this.start >= this.length ? this.EOF() :
context === "skip" ? this.Skip() :
this.Start(context);
} while (!this.type);
this.end = this.offset;
return this.type;
},
// TODO: Should this be put on ParseResult instead?
rawValue: function(start, end) {
// Line endings are normalized to <LF>
return this.input.slice(start, end).replace(crNewline, "\n");
},
peekChar: function() {
return this.input.charAt(this.offset);
},
peekCharAt: function(n) {
return this.input.charAt(this.offset + n);
},
peekCodePoint: function() {
return codePointAt(this.input, this.offset);
},
peekCode: function() {
return this.input.charCodeAt(this.offset) | 0;
},
peekCodeAt: function(n) {
return this.input.charCodeAt(this.offset + n) | 0;
},
readChar: function() {
return this.input.charAt(this.offset++);
},
readUnicodeEscapeValue: function() {
var hex = "";
if (this.peekChar() === "{") {
this.offset++;
hex = this.readHex(0);
if (hex.length < 1 || this.readChar() !== "}")
return null;
} else {
hex = this.readHex(4);
if (hex.length < 4)
return null;
}
return parseInt(hex, 16);
},
readUnicodeEscape: function() {
var cp = this.readUnicodeEscapeValue(),
val = codePointString(cp);
return val === "" ? null : val;
},
readIdentifierEscape: function(startChar) {
this.offset++;
if (this.readChar() !== "u")
return null;
var cp = this.readUnicodeEscapeValue();
if (startChar) {
if (!isIdentifierStart(cp))
return null;
} else {
if (!isIdentifierPart(cp))
return null;
}
return codePointString(cp);
},
readOctalEscape: function() {
var m = octalEscape.exec(this.input.slice(this.offset, this.offset + 3)),
val = m ? m[0] : "";
this.offset += val.length;
return val;
},
readStringEscape: function(continuationChar) {
this.offset++;
var chr = "",
esc = "";
switch (chr = this.readChar()) {
case "t": return "\t";
case "b": return "\b";
case "v": return "\v";
case "f": return "\f";
case "r": return "\r";
case "n": return "\n";
case "\r":
this.lineMap.addBreak(this.offset - 1);
if (this.peekChar() === "\n")
this.offset++;
return continuationChar;
case "\n":
case "\u2028":
case "\u2029":
this.lineMap.addBreak(this.offset - 1);
return continuationChar;
case "0":
case "1":
case "2":
case "3":
case "4":
case "5":
case "6":
case "7":
this.offset--;
esc = this.readOctalEscape();
if (esc === "0") {
return String.fromCharCode(0);
} else {
this.strictError = "Octal literals are not allowed in strict mode";
return String.fromCharCode(parseInt(esc, 8));
}
case "x":
esc = this.readHex(2);
return (esc.length < 2) ? null : String.fromCharCode(parseInt(esc, 16));
case "u":
return this.readUnicodeEscape();
default:
return chr;
}
},
readRange: function(low, high) {
var start = this.offset,
code = 0;
while (code = this.peekCode()) {
if (code >= low && code <= high) this.offset++;
else break;
}
return this.input.slice(start, this.offset);
},
readInteger: function() {
var start = this.offset,
code = 0;
while (code = this.peekCode()) {
if (code >= 48 && code <= 57) this.offset++;
else break;
}
return this.input.slice(start, this.offset);
},
readHex: function(maxLen) {
var str = "",
chr = "";
while (chr = this.peekChar()) {
if (!hexChar.test(chr))
break;
str += chr;
this.offset++;
if (str.length === maxLen)
break;
}
return str;
},
peekNumberFollow: function() {
var c = this.peekCode();
if (c > 127)
return !isIdentifierStart(this.peekCodePoint());
return !(
c > 64 && c < 91 ||
c > 96 && c < 123 ||
c > 47 && c < 58 ||
c === 36 ||
c === 95 ||
c === 92
);
},
Skip: function() {
var code = this.peekCode();
if (code < 128) {
switch (charTable[code]) {
case "whitespace": return this.Whitespace();
case "newline": return this.Newline(code);
case "slash":
var next$0 = this.peekCodeAt(1);
if (next$0 === 47) return this.LineComment(); // /
else if (next$0 === 42) return this.BlockComment(); // *
}
} else {
// Unicode newlines
if (isNewlineChar(this.peekChar()))
return this.Newline(code);
var cp$0 = this.peekCodePoint();
// Unicode whitespace
if (isWhitespace(cp$0))
return this.UnicodeWhitespace(cp$0);
}
return "UNKNOWN";
},
Start: function(context) {
var code = this.peekCode(),
next = 0;
switch (charTable[code]) {
case "punctuator-char": return this.PunctuatorChar();
case "whitespace": return this.Whitespace();
case "identifier": return this.Identifier(context, code);
case "rbrace":
if (context === "template") return this.Template();
else return this.PunctuatorChar();
case "punctuator": return this.Punctuator();
case "newline": return this.Newline(code);
case "decimal-digit": return this.Number();
case "template": return this.Template();
case "string": return this.String();
case "at": return this.AtName();
case "zero":
switch (next = this.peekCodeAt(1)) {
case 88: case 120: return this.HexNumber(); // x
case 66: case 98: return this.BinaryNumber(); // b
case 79: case 111: return this.OctalNumber(); // o
}
return next >= 48 && next <= 55 ?
this.LegacyOctalNumber() :
this.Number();
case "dot":
next = this.peekCodeAt(1);
if (next >= 48 && next <= 57) return this.Number();
else return this.Punctuator();
case "slash":
next = this.peekCodeAt(1);
if (next === 47) return this.LineComment(); // /
else if (next === 42) return this.BlockComment(); // *
else if (context === "div") return this.Punctuator();
else return this.RegularExpression();
}
// Unicode newlines
if (isNewlineChar(this.peekChar()))
return this.Newline(code);
var cp = this.peekCodePoint();
// Unicode whitespace
if (isWhitespace(cp))
return this.UnicodeWhitespace(cp);
// Unicode identifier chars
if (isIdentifierStart(cp))
return this.Identifier(context, cp);
return this.Error();
},
Whitespace: function() {
this.offset++;
var code = 0;
while (code = this.peekCode()) {
// ASCII Whitespace: [\t] [\v] [\f] [ ]
if (code === 9 || code === 11 || code === 12 || code === 32)
this.offset++;
else
break;
}
return "";
},
UnicodeWhitespace: function(cp) {
this.offset += codePointLength(cp);
// General unicode whitespace
while (isWhitespace(cp = this.peekCodePoint()))
this.offset += codePointLength(cp);
return "";
},
Newline: function(code) {
this.lineMap.addBreak(this.offset++);
// Treat /r/n as a single newline
if (code === 13 && this.peekCode() === 10)
this.offset++;
this.newlineBefore = true;
return "";
},
PunctuatorChar: function() {
return this.readChar();
},
Punctuator: function() {
var op = this.readChar(),
chr = "",
next = "";
while (
isPunctuatorNext(chr = this.peekChar()) &&
multiCharPunctuator.test(next = op + chr)) {
this.offset++;
op = next;
}
// ".." is not a valid token
if (op === "..") {
this.offset--;
op = ".";
}
return op;
},
Template: function() {
var first = this.readChar(),
end = false,
val = "",
esc = "",
chr = "";
while (chr = this.peekChar()) {
if (chr === "`") {
end = true;
break;
}
if (chr === "$" && this.peekCharAt(1) === "{") {
this.offset++;
break;
}
if (chr === "\\") {
esc = this.readStringEscape("\n");
if (esc === null)
return this.Error();
val += esc;
} else {
val += chr;
this.offset++;
}
}
if (!chr)
return this.Error();
this.offset++;
this.value = val;
this.templateEnd = end;
return "TEMPLATE";
},
String: function() {
var delim = this.readChar(),
val = "",
esc = "",
chr = "";
while (chr = this.input[this.offset]) {
if (chr === delim)
break;
if (isNewlineChar(chr))
return this.Error();
if (chr === "\\") {
esc = this.readStringEscape("");
if (esc === null)
return this.Error();
val += esc;
} else {
val += chr;
this.offset++;
}
}
if (!chr)
return this.Error();
this.offset++;
this.value = val;
return "STRING";
},
RegularExpression: function() {
this.offset++;
var backslash = false,
inClass = false,
val = "",
chr = "",
code = 0,
flagStart = 0;
while (chr = this.readChar()) {
if (isNewlineChar(chr))
return this.Error();
if (backslash) {
val += "\\" + chr;
backslash = false;
} else if (chr === "[") {
inClass = true;
val += chr;
} else if (chr === "]" && inClass) {
inClass = false;
val += chr;
} else if (chr === "/" && !inClass) {
break;
} else if (chr === "\\") {
backslash = true;
} else {
val += chr;
}
}
if (!chr)
return this.Error();
flagStart = this.offset;
while (true) {
code = this.peekCode();
if (code === 92) {
return this.Error();
} else if (code > 127) {
if (isIdentifierPart(code = this.peekCodePoint()))
this.offset += codePointLength(code);
else
break;
} else if (isIdentifierPartAscii(code)) {
this.offset++;
} else {
break;
}
}
this.value = val;
this.regexFlags = this.input.slice(flagStart, this.offset);
return "REGEX";
},
LegacyOctalNumber: function() {
this.offset++;
var start = this.offset,
code = 0;
while (code = this.peekCode()) {
if (code >= 48 && code <= 55)
this.offset++;
else
break;
}
this.strictError = "Octal literals are not allowed in strict mode";
var val = parseInt(this.input.slice(start, this.offset), 8);
if (!this.peekNumberFollow())
return this.Error();
this.number = val;
return "NUMBER";
},
Number: function() {
var start = this.offset,
next = "";
this.readInteger();
if ((next = this.peekChar()) === ".") {
this.offset++;
this.readInteger();
next = this.peekChar();
}
if (next === "e" || next === "E") {
this.offset++;
next = this.peekChar();
if (next === "+" || next === "-")
this.offset++;
if (!this.readInteger())
return this.Error();
}
var val = parseFloat(this.input.slice(start, this.offset));
if (!this.peekNumberFollow())
return this.Error();
this.number = val;
return "NUMBER";
},
BinaryNumber: function() {
this.offset += 2;
var val = parseInt(this.readRange(48, 49), 2);
if (!this.peekNumberFollow())
return this.Error();
this.number = val;
return "NUMBER";
},
OctalNumber: function() {
this.offset += 2;
var val = parseInt(this.readRange(48, 55), 8);
if (!this.peekNumberFollow())
return this.Error();
this.number = val;
return "NUMBER";
},
HexNumber: function() {
this.offset += 2;
var val = parseInt(this.readHex(0), 16);
if (!this.peekNumberFollow())
return this.Error();
this.number = val;
return "NUMBER";
},
Identifier: function(context, code) {
var start = this.offset,
val = "",
esc = "";
// Identifier Start
if (code === 92) {
esc = this.readIdentifierEscape(true);
if (esc === null)
return this.Error();
val = esc;
start = this.offset;
} else if (code > 127) {
this.offset += codePointLength(code);
} else {
this.offset++;
}
// Identifier Part
while (true) {
code = this.peekCode();
if (code === 92) {
val += this.input.slice(start, this.offset);
esc = this.readIdentifierEscape(false);
if (esc === null)
return this.Error();
val += esc;
start = this.offset;
} else if (code > 127) {
if (isIdentifierPart(code = this.peekCodePoint()))
this.offset += codePointLength(code);
else
break;
} else if (isIdentifierPartAscii(code)) {
this.offset++;
} else {
break;
}
}
val += this.input.slice(start, this.offset);
this.value = val;
if (context !== "name" && isReservedWord(val))
return esc ? this.Error() : val;
return "IDENTIFIER";
},
AtName: function() {
this.offset += 1;
if (this.Start("name") !== "IDENTIFIER")
return this.Error();
// TODO: This is a bit of a hack
this.value = "@" + this.value;
return "ATNAME";
},
LineComment: function() {
this.offset += 2;
var start = this.offset,
chr = "";
while (chr = this.peekChar()) {
if (isNewlineChar(chr))
break;
this.offset++;
}
this.value = this.input.slice(start, this.offset);
return "COMMENT";
},
BlockComment: function() {
this.offset += 2;
var pattern = blockCommentPattern,
start = this.offset;
while (true) {
pattern.lastIndex = this.offset;
var m$0 = pattern.exec(this.input);
if (!m$0) return this.Error();
this.offset = m$0.index + m$0[0].length;
if (m$0[0] === "*/")
break;
this.newlineBefore = true;
this.lineMap.addBreak(m$0.index);
}
this.value = this.input.slice(start, this.offset - 2);
return "COMMENT";
},
EOF: function() {
return "EOF";
},
Error: function(msg) {
if (this.start === this.offset)
this.offset++;
return "ILLEGAL";
}});
});
exports.isReservedWord = isReservedWord;
exports.isStrictReservedWord = isStrictReservedWord;
exports.Scanner = Scanner;
}).call(this, _M25);
(function(exports) {
var AST = _M24;
var isReservedWord = _M25.isReservedWord;
var Transform = _esdown.class(function(__) { var Transform; __({ constructor: Transform = function() {} });
// Transform an expression into a formal parameter list
__({ transformFormals: function(expr) {
if (!expr)
return [];
var list;
switch (expr.type) {
case "SequenceExpression": list = expr.expressions; break;
case "CallExpression": list = expr.arguments; break;
default: list = [expr]; break;
}
for (var i$0 = 0; i$0 < list.length; ++i$0) {
var node$0 = list[i$0],
param$0;
if (i$0 === list.length - 1 && node$0.type === "SpreadExpression") {
expr = node$0.expression;
// Rest parameters can only be identifiers
if (expr.type !== "Identifier")
this.fail("Invalid rest parameter", expr);
this.checkBindingTarget(expr);
// Clear parser error for invalid spread expression
node$0.error = "";
param$0 = new AST.RestParameter(expr, node$0.start, node$0.end);
} else {
param$0 = new AST.FormalParameter(node$0, null, node$0.start, node$0.end);
this.transformPatternElement(param$0, true);
}
list[i$0] = param$0;
}
return list;
},
transformArrayPattern: function(node, binding) {
// NOTE: ArrayPattern and ArrayLiteral are isomorphic
node.type = "ArrayPattern";
var elems = node.elements;
for (var i$1 = 0; i$1 < elems.length; ++i$1) {
var elem$0 = elems[i$1],
expr$0;
// Skip holes in pattern
if (!elem$0)
continue;
switch (elem$0.type) {
case "SpreadExpression":
// Rest element must be in the last position and cannot be followed
// by a comma
if (i$1 < elems.length - 1 || node.trailingComma)
this.fail("Invalid destructuring pattern", elem$0);
expr$0 = elem$0.expression;
// Rest target cannot be a destructuring pattern
switch (expr$0.type) {
case "ObjectLiteral":
case "ObjectPattern":
case "ArrayLiteral":
case "ArrayPattern":
this.fail("Invalid rest pattern", expr$0);
}
elem$0 = new AST.PatternRestElement(expr$0, elem$0.start, elem$0.end);
this.checkPatternTarget(elem$0.pattern, binding);
break;
case "PatternRestElement":
this.checkPatternTarget(elem$0.pattern, binding);
break;
case "PatternElement":
this.transformPatternElement(elem$0, binding);
break;
default:
elem$0 = new AST.PatternElement(elem$0, null, elem$0.start, elem$0.end);
this.transformPatternElement(elem$0, binding);
break;
}
elems[i$1] = elem$0;
}
},
transformObjectPattern: function(node, binding) {
// NOTE: ObjectPattern and ObjectLiteral are isomorphic
node.type = "ObjectPattern";
var props = node.properties;
for (var i$2 = 0; i$2 < props.length; ++i$2) {
var prop$0 = props[i$2];
// Clear the error flag
prop$0.error = "";
switch (prop$0.type) {
case "PropertyDefinition":
// Replace node
props[i$2] = prop$0 = new AST.PatternProperty(
prop$0.name,
prop$0.expression,
null,
prop$0.start,
prop$0.end);
break;
case "PatternProperty":
break;
default:
this.fail("Invalid pattern", prop$0);
}
if (prop$0.pattern) this.transformPatternElement(prop$0, binding);
else this.checkPatternTarget(prop$0.name, binding);
}
},
transformPatternElement: function(elem, binding) {
var node = elem.pattern;
// Split assignment into pattern and initializer
if (node && node.type === "AssignmentExpression" && node.operator === "=") {
elem.initializer = node.right;
elem.pattern = node = node.left;
}
this.checkPatternTarget(node, binding);
},
transformIdentifier: function(node) {
var value = node.value;
if (isReservedWord(value))
this.fail("Unexpected token " + value, node);
this.checkIdentifier(node);
},
transformDefaultExport: function(node) {
var toType = null;
switch (node.type) {
case "ClassExpression":
if (node.identifier) toType = "ClassDeclaration";
break;
case "FunctionExpression":
if (node.identifier) toType = "FunctionDeclaration";
break;
}
if (toType) {
node.type = toType;
return true;
}
return false;
}});
});
exports.Transform = Transform;
}).call(this, _M26);
(function(exports) {
var isStrictReservedWord = _M25.isStrictReservedWord;
// Returns true if the specified name is a restricted identifier in strict mode
function isPoisonIdent(name) {
return name === "eval" || name === "arguments";
}
// Unwraps parens surrounding an expression
function unwrapParens(node) {
// Remove any parenthesis surrounding the target
for (; node.type === "ParenExpression"; node = node.expression);
return node;
}
var Validate = _esdown.class(function(__) { var Validate; __({ constructor: Validate = function() {} });
// Validates an assignment target
__({ checkAssignmentTarget: function(node, simple) {
switch (node.type) {
case "Identifier":
if (isPoisonIdent(node.value))
this.addStrictError("Cannot modify " + node.value + " in strict mode", node);
return;
case "MemberExpression":
case "AtName":
return;
case "ObjectPattern":
case "ArrayPattern":
if (!simple) return;
break;
case "ObjectLiteral":
if (!simple) { this.transformObjectPattern(node, false); return }
break;
case "ArrayLiteral":
if (!simple) { this.transformArrayPattern(node, false); return }
break;
}
this.fail("Invalid left-hand side in assignment", node);
},
// Validates a binding target
checkBindingTarget: function(node) {
switch (node.type) {
case "Identifier":
// Perform basic identifier validation
this.checkIdentifier(node);
// Mark identifier node as a declaration
node.context = "declaration";
var name$0 = node.value;
if (isPoisonIdent(name$0))
this.addStrictError("Binding cannot be created for '" + name$0 + "' in strict mode", node);
return;
case "ArrayLiteral":
case "ArrayPattern":
this.transformArrayPattern(node, true);
return;
case "ObjectLiteral":
case "ObjectPattern":
this.transformObjectPattern(node, true);
return;
}
this.fail("Invalid binding target", node);
},
// Validates a target in a binding or assignment pattern
checkPatternTarget: function(node, binding) {
return binding ? this.checkBindingTarget(node) : this.checkAssignmentTarget(node, false);
},
// Checks an identifier for strict mode reserved words
checkIdentifier: function(node) {
var ident = node.value;
if (ident === "yield" && this.context.isGenerator)
this.fail("yield cannot be an identifier inside of a generator function", node);
else if (ident === "await" && this.context.isAsync)
this.fail("await cannot be an identifier inside of an async function", node);
else if (isStrictReservedWord(ident))
this.addStrictError(ident + " cannot be used as an identifier in strict mode", node);
},
// Checks function formal parameters for strict mode restrictions
checkParameters: function(params, kind) {
for (var i$0 = 0; i$0 < params.length; ++i$0) {
var node$0 = params[i$0];
if (node$0.type !== "FormalParameter" || node$0.pattern.type !== "Identifier")
continue;
var name$1 = node$0.pattern.value;
if (isPoisonIdent(name$1))
this.addStrictError("Parameter name " + name$1 + " is not allowed in strict mode", node$0);
}
},
// Performs validation on transformed arrow formal parameters
checkArrowParameters: function(params) {
params = this.transformFormals(params);
// TODO: Check that formal parameters do not contain yield expressions or
// await expressions
this.checkParameters(params);
return params;
},
// Performs validation on the init portion of a for-in or for-of statement
checkForInit: function(init, type) {
if (init.type === "VariableDeclaration") {
// For-in/of may only have one variable declaration
if (init.declarations.length !== 1)
this.fail("for-" + type + " statement may not have more than one variable declaration", init);
var decl$0 = init.declarations[0];
// Initializers are not allowed in for in and for of
if (decl$0.initializer)
this.fail("Invalid initializer in for-" + type + " statement", init);
} else {
this.checkAssignmentTarget(this.unwrapParens(init));
}
},
checkInvalidNodes: function() {
var context = this.context,
parent = context.parent,
list = context.invalidNodes;
for (var i$1 = 0; i$1 < list.length; ++i$1) {
var item$0 = list[i$1],
node$1 = item$0.node,
error$0 = node$1.error;
// Skip if error has been resolved
if (!error$0)
continue;
// Throw if item is not a strict-mode-only error, or if the current
// context is strict
if (!item$0.strict || context.mode === "strict")
this.fail(error$0, node$1);
// Skip strict errors in sloppy mode
if (context.mode === "sloppy")
continue;
// If the parent context is sloppy, then we ignore. If the parent context
// is strict, then this context would also be known to be strict and
// therefore handled above.
// If parent mode has not been determined, add error to
// parent context
if (!parent.mode)
parent.invalidNodes.push(item$0);
}
},
checkDelete: function(node) {
node = this.unwrapParens(node);
if (node.type === "Identifier")
this.addStrictError("Cannot delete unqualified property in strict mode", node);
},
checkUnaryBind: function(node) {
node = this.unwrapParens(node);
if (node.type !== "MemberExpression" || node.object.type === "SuperKeyword")
this.fail("Unary bind operand must be a property lookup", node);
}});
});
exports.Validate = Validate;
}).call(this, _M27);
(function(exports) {
var AST = _M24;
var Scanner = _M25.Scanner;
var Transform = _M26.Transform;
var Validate = _M27.Validate;
// Returns true if the specified operator is an increment operator
function isIncrement(op) {
return op === "++" || op === "--";
}
// Returns a binary operator precedence level
function getPrecedence(op) {
switch (op) {
case "||": return 1;
case "&&": return 2;
case "|": return 3;
case "^": return 4;
case "&": return 5;
case "==":
case "!=":
case "===":
case "!==": return 6;
case "<=":
case ">=":
case ">":
case "<":
case "instanceof":
case "in": return 7;
case ">>>":
case ">>":
case "<<": return 8;
case "+":
case "-": return 9;
case "*":
case "/":
case "%": return 10;
}
return 0;
}
// Returns true if the specified operator is an assignment operator
function isAssignment(op) {
if (op === "=")
return true;
switch (op) {
case "*=":
case "&=":
case "^=":
case "|=":
case "<<=":
case ">>=":
case ">>>=":
case "%=":
case "+=":
case "-=":
case "/=":
return true;
}
return false;
}
// Returns true if the specified operator is a unary operator
function isUnary(op) {
switch (op) {
case "await":
case "delete":
case "void":
case "typeof":
case "!":
case "~":
case "+":
case "-":
return true;
}
return false;
}
// Returns true if the value is a function modifier keyword
function isFunctionModifier(value) {
return value === "async";
}
// Returns true if the value is a generator function modifier keyword
function isGeneratorModifier(value) {
return value === "async" || value === "";
}
// Returns true if the value is a method definition keyword
function isMethodKeyword(value) {
switch (value) {
case "get":
case "set":
case "static":
return true;
}
return false;
}
// Returns true if the supplied meta property pair is valid
function isValidMeta(left, right) {
switch (left) {
case "new":
return right === "target";
}
return false;
}
// Returns true if the value is a known directive
function isDirective(value) {
return value === "use strict";
}
// Returns the value of the specified token, if it is an identifier and does not
// contain any unicode escapes
function keywordFromToken(token) {
if (token.type === "IDENTIFIER" && token.end - token.start === token.value.length)
return token.value;
return "";
}
// Returns the value of the specified node, if it is an Identifier and does not
// contain any unicode escapes
function keywordFromNode(node) {
if (node.type === "Identifier" && node.end - node.start === node.value.length)
return node.value;
return "";
}
// Copies token data
function copyToken(from, to) {
to.type = from.type;
to.value = from.value;
to.number = from.number;
to.regexFlags = from.regexFlags;
to.templateEnd = from.templateEnd;
to.newlineBefore = from.newlineBefore;
to.strictError = from.strictError;
to.start = from.start;
to.end = from.end;
return to;
}
var Context = _esdown.class(function(__) { var Context;
__({ constructor: Context = function(parent) {
this.parent = parent;
this.mode = "";
this.isFunction = false;
this.functionBody = false;
this.isGenerator = false;
this.isAsync = false;
this.isMethod = false;
this.isConstructor = false;
this.hasYieldAwait = false;
this.labelMap = null;
this.switchDepth = 0;
this.loopDepth = 0;
this.invalidNodes = [];
}});
});
var ParseResult = _esdown.class(function(__) { var ParseResult;
__({ constructor: ParseResult = function(input, lineMap, ast) {
this.input = input;
this.lineMap = lineMap;
this.ast = ast;
this.scopeTree = null;
},
locate: function(offset) {
return this.lineMap.locate(offset);
},
createSyntaxError: function(message, node) {
var loc = this.lineMap.locate(node.start),
err = new SyntaxError(message);
err.line = loc.line;
err.column = loc.column;
err.lineOffset = loc.lineOffset;
err.startOffset = node.start;
err.endOffset = node.end;
err.sourceText = this.input;
return err;
}});
});
var AtNameSet = _esdown.class(function(__) { var AtNameSet;
__({ constructor: AtNameSet = function(parser) {
this.parser = parser;
this.names = {};
},
add: function(node, kind) {
if (node.type !== "AtName")
return true;
var name = node.value,
code = 3;
switch (kind) {
case "get": code = 1; break;
case "set": code = 2; break;
}
var current = this.names[name];
if (current & code)
this.parser.fail("Duplicate private name definition", node);
this.names[name] = current | code;
}});
});
var Parser = _esdown.class(function(__) { var Parser; __({ constructor: Parser = function() {} });
__({ parse: function(input, options) {
options = options || {};
this.onASI = options.onASI || null;
var scanner = new Scanner(input);
this.scanner = scanner;
this.input = input;
this.peek0 = null;
this.peek1 = null;
this.tokenStash = new Scanner;
this.tokenEnd = scanner.offset;
this.context = new Context(null, false);
this.setStrict(false);
var ast = options.module ? this.Module() : this.Script();
return new ParseResult(this.input, this.scanner.lineMap, ast);
},
nextToken: function(context) {
var scanner = this.scanner,
type = "";
context = context || "";
do { type = scanner.next(context); }
while (type === "COMMENT");
return scanner;
},
nodeStart: function() {
if (this.peek0)
return this.peek0.start;
// Skip over whitespace and comments
this.scanner.skip();
return this.scanner.offset;
},
nodeEnd: function() {
return this.tokenEnd;
},
readToken: function(type, context) {
var token = this.peek0 || this.nextToken(context);
this.peek0 = this.peek1;
this.peek1 = null;
this.tokenEnd = token.end;
if (type && token.type !== type)
this.unexpected(token);
return token;
},
read: function(type, context) {
return this.readToken(type, context).type;
},
peekToken: function(context) {
if (!this.peek0)
this.peek0 = this.nextToken(context);
return this.peek0;
},
peek: function(context) {
return this.peekToken(context).type;
},
peekTokenAt: function(context, index) {
if (index !== 1 || this.peek0 === null)
throw new Error("Invalid lookahead")
if (this.peek1 === null) {
this.peek0 = copyToken(this.peek0, this.tokenStash);
this.peek1 = this.nextToken(context);
}
return this.peek1;
},
peekAt: function(context, index) {
return this.peekTokenAt(context, index).type;
},
unpeek: function() {
if (this.peek0) {
this.scanner.offset = this.peek0.start;
this.peek0 = null;
this.peek1 = null;
}
},
peekUntil: function(type, context) {
var tok = this.peek(context);
return tok !== "EOF" && tok !== type ? tok : null;
},
readKeyword: function(word) {
var token = this.readToken();
if (token.type === word || keywordFromToken(token) === word)
return token;
this.unexpected(token);
},
peekKeyword: function(word) {
var token = this.peekToken();
return token.type === word || keywordFromToken(token) === word;
},
peekLet: function() {
if (this.peekKeyword("let")) {
switch (this.peekAt("div", 1)) {
case "{":
case "[":
case "IDENTIFIER": return true;
}
}
return false;
},
peekYield: function() {
return this.context.functionBody &&
this.context.isGenerator &&
this.peekKeyword("yield");
},
peekAwait: function() {
if (this.peekKeyword("await")) {
if (this.context.functionBody && this.context.isAsync)
return true;
if (this.isModule)
this.fail("Await is reserved within modules");
}
return false;
},
peekFunctionModifier: function() {
var token = this.peekToken();
if (!isFunctionModifier(keywordFromToken(token)))
return false;
token = this.peekTokenAt("div", 1);
return token.type === "function" && !token.newlineBefore;
},
peekEnd: function() {
var token = this.peekToken();
if (!token.newlineBefore) {
switch (token.type) {
case "EOF":
case "}":
case ";":
case ")":
break;
default:
return false;
}
}
return true;
},
unexpected: function(token) {
var type = token.type, msg;
msg = type === "EOF" ?
"Unexpected end of input" :
"Unexpected token " + token.type;
this.fail(msg, token);
},
fail: function(msg, node) {
if (!node)
node = this.peekToken();
var result = new ParseResult(this.input, this.scanner.lineMap, null);
throw result.createSyntaxError(msg, node);
},
unwrapParens: function(node) {
// Remove any parenthesis surrounding the target
for (; node.type === "ParenExpression"; node = node.expression);
return node;
},
// == Context Management ==
pushContext: function(isArrow) {
var parent = this.context,
c = new Context(parent);
this.context = c;
if (parent.mode === "strict")
c.mode = "strict";
if (isArrow) {
c.isMethod = parent.isMethod;
c.isConstructor = parent.isConstructor;
}
return c;
},
pushMaybeContext: function() {
var parent = this.context,
c = this.pushContext();
c.isFunction = parent.isFunction;
c.isGenerator = parent.isGenerator;
c.isAsync = parent.isAsync;
c.isMethod = parent.isMethod;
c.isConstructor = parent.isConstructor;
c.functionBody = parent.functionBody;
},
popContext: function(collapse) {
var context = this.context,
parent = context.parent;
// If collapsing into parent context, copy invalid nodes into parent
if (collapse)
context.invalidNodes.forEach(function(node) { return parent.invalidNodes.push(node); });
else
this.checkInvalidNodes();
this.context = this.context.parent;
},
setStrict: function(strict) {
this.context.mode = strict ? "strict" : "sloppy";
},
addStrictError: function(error, node) {
this.addInvalidNode(error, node, true);
},
addInvalidNode: function(error, node, strict) {
node.error = error;
this.context.invalidNodes.push({ node: node, strict: !!strict });
},
setLabel: function(label, value) {
var m = this.context.labelMap;
if (!m)
m = this.context.labelMap = Object.create(null);
m[label] = value;
},
getLabel: function(label) {
var m = this.context.labelMap;
return (m && m[label]) | 0;
},
setFunctionType: function(kind) {
var c = this.context,
a = false,
g = false;
switch (kind) {
case "async": a = true; break;
case "generator": g = true; break;
case "async-generator": a = g = true; break;
}
c.isFunction = true;
c.isAsync = a;
c.isGenerator = g;
},
// === Top Level ===
Script: function() {
this.isModule = false;
this.pushContext();
var start = this.nodeStart(),
statements = this.StatementList(true, false);
this.popContext();
return new AST.Script(statements, start, this.nodeEnd());
},
Module: function() {
this.isModule = true;
this.pushContext();
this.setStrict(true);
var start = this.nodeStart(),
statements = this.StatementList(true, true);
this.popContext();
return new AST.Module(statements, start, this.nodeEnd());
},
// === Expressions ===
Expression: function(noIn) {
var expr = this.AssignmentExpression(noIn),
list = null;
while (this.peek("div") === ",") {
this.read();
if (list === null)
expr = new AST.SequenceExpression(list = [expr], expr.start, -1);
list.push(this.AssignmentExpression(noIn));
}
if (list)
expr.end = this.nodeEnd();
return expr;
},
AssignmentExpression: function(noIn, allowSpread) {
var start = this.nodeStart(),
node;
if (this.peek() === "...") {
this.read();
node = new AST.SpreadExpression(
this.AssignmentExpression(noIn),
start,
this.nodeEnd());
if (!allowSpread)
this.addInvalidNode("Invalid spread expression", node);
return node;
}
if (this.peekYield())
return this.YieldExpression(noIn);
node = this.ConditionalExpression(noIn);
if (node.type === "ArrowFunctionHead")
return this.ArrowFunctionBody(node, noIn);
// Check for assignment operator
if (!isAssignment(this.peek("div")))
return node;
this.checkAssignmentTarget(this.unwrapParens(node), false);
return new AST.AssignmentExpression(
this.read(),
node,
this.AssignmentExpression(noIn),
start,
this.nodeEnd());
},
YieldExpression: function(noIn) {
var start = this.nodeStart(),
delegate = false,
expr = null;
this.readKeyword("yield");
if (!this.peekEnd() && this.peek() !== ",") {
if (this.peek() === "*") {
this.read();
delegate = true;
}
expr = this.AssignmentExpression(noIn);
}
this.context.hasYieldAwait = true;
return new AST.YieldExpression(
expr,
delegate,
start,
this.nodeEnd());
},
ConditionalExpression: function(noIn) {
var start = this.nodeStart(),
left = this.BinaryExpression(noIn),
middle,
right;
if (this.peek("div") !== "?")
return left;
this.read("?");
middle = this.AssignmentExpression();
this.read(":");
right = this.AssignmentExpression(noIn);
return new AST.ConditionalExpression(left, middle, right, start, this.nodeEnd());
},
BinaryExpression: function(noIn) {
return this.PartialBinaryExpression(this.UnaryExpression(), 0, noIn);
},
PartialBinaryExpression: function(lhs, minPrec, noIn) {
var prec = 0,
next = "",
max = 0,
op = "",
rhs;
while (next = this.peek("div")) {
// Exit if operator is "in" and in is not allowed
if (next === "in" && noIn)
break;
prec = getPrecedence(next);
// Exit if not a binary operator or lower precendence
if (prec === 0 || prec < minPrec)
break;
this.read();
op = next;
max = prec;
rhs = this.UnaryExpression();
while (next = this.peek("div")) {
prec = getPrecedence(next);
// Exit if not a binary operator or equal or higher precendence
if (prec === 0 || prec <= max)
break;
rhs = this.PartialBinaryExpression(rhs, prec, noIn);
}
lhs = new AST.BinaryExpression(op, lhs, rhs, lhs.start, rhs.end);
}
return lhs;
},
UnaryExpression: function() {
var start = this.nodeStart(),
type = this.peek(),
token,
expr;
if (isIncrement(type)) {
this.read();
expr = this.MemberExpression(true);
this.checkAssignmentTarget(this.unwrapParens(expr), true);
return new AST.UpdateExpression(type, expr, true, start, this.nodeEnd());
}
if (this.peekAwait()) {
type = "await";
this.context.hasYieldAwait = true;
}
if (isUnary(type)) {
this.read();
expr = this.UnaryExpression();
if (type === "delete")
this.checkDelete(expr);
return new AST.UnaryExpression(type, expr, start, this.nodeEnd());
}
expr = this.MemberExpression(true);
token = this.peekToken("div");
type = token.type;
// Check for postfix operator
if (isIncrement(type) && !token.newlineBefore) {
this.read();
this.checkAssignmentTarget(this.unwrapParens(expr), true);
return new AST.UpdateExpression(type, expr, false, start, this.nodeEnd());
}
return expr;
},
MemberExpression: function(allowCall) {
var token = this.peekToken(),
start = token.start,
arrowType = "",
isSuper = false,
exit = false,
expr,
prop;
switch (token.type) {
case "super":
expr = this.SuperKeyword();
isSuper = true;
break;
case "new":
expr = this.peekAt("", 1) === "." ?
this.MetaProperty() :
this.NewExpression();
break;
case "::":
if (allowCall) {
expr = null;
break;
}
default:
expr = this.PrimaryExpression();
break;
}
while (!exit) {
token = this.peekToken("div");
switch (token.type) {
case ".":
this.read();
prop = this.peek("name") === "ATNAME" && !isSuper ?
this.AtName() :
this.IdentifierName();
expr = new AST.MemberExpression(
expr,
prop,
false,
start,
this.nodeEnd());
break;
case "[":
this.read();
prop = this.Expression();
this.read("]");
expr = new AST.MemberExpression(
expr,
prop,
true,
start,
this.nodeEnd());
break;
case "(":
if (isSuper) {
if (!allowCall || !this.context.isConstructor)
this.fail("Invalid super call");
}
if (!allowCall) {
exit = true;
break;
}
if (isFunctionModifier(keywordFromNode(expr)) && !token.newlineBefore) {
arrowType = expr.value;
this.pushMaybeContext();
}
expr = new AST.CallExpression(
expr,
this.ArgumentList(),
start,
this.nodeEnd());
if (arrowType) {
token = this.peekToken("div");
if (token.type === "=>" && !token.newlineBefore) {
expr = this.ArrowFunctionHead(arrowType, expr, start);
exit = true;
} else {
arrowType = "";
this.popContext(true);
}
}
break;
case "TEMPLATE":
if (isSuper)
this.fail();
expr = new AST.TaggedTemplateExpression(
expr,
this.TemplateExpression(),
start,
this.nodeEnd());
break;
case "::":
if (isSuper)
this.fail();
if (!allowCall) {
exit = true;
break;
}
this.read();
expr = new AST.BindExpression(
expr,
this.MemberExpression(false),
start,
this.nodeEnd());
if (!expr.left)
this.checkUnaryBind(expr.right);
break;
default:
if (isSuper)
this.fail();
exit = true;
break;
}
isSuper = false;
}
return expr;
},
NewExpression: function() {
var start = this.nodeStart();
this.read("new");
var expr = this.MemberExpression(false),
args = this.peek("div") === "(" ? this.ArgumentList() : null;
return new AST.NewExpression(expr, args, start, this.nodeEnd());
},
MetaProperty: function() {
var token = this.readToken(),
start = token.start,
left = token.type === "IDENTIFIER" ? token.value : token.type,
right;
this.read(".");
token = this.readToken("IDENTIFIER", "name");
right = token.value;
if (!isValidMeta(left, right))
this.fail("Invalid meta property", token);
return new AST.MetaProperty(left, right, start, this.nodeEnd());
},
SuperKeyword: function() {
var token = this.readToken("super"),
node = new AST.SuperKeyword(token.start, token.end);
if (!this.context.isMethod)
this.fail("Super keyword outside of method", node);
return node;
},
ArgumentList: function() {
var list = [];
this.read("(");
while (this.peekUntil(")")) {
if (list.length > 0)
this.read(",");
list.push(this.AssignmentExpression(false, true));
}
this.read(")");
return list;
},
PrimaryExpression: function() {
var token = this.peekToken(),
type = token.type,
start = this.nodeStart(),
next,
value;
switch (type) {
case "function": return this.FunctionExpression();
case "class": return this.ClassExpression();
case "TEMPLATE": return this.TemplateExpression();
case "NUMBER": return this.NumberLiteral();
case "STRING": return this.StringLiteral();
case "{": return this.ObjectLiteral();
case "(": return this.ParenExpression();
case "[": return this.ArrayLiteral();
case "IDENTIFIER":
value = keywordFromToken(token);
next = this.peekTokenAt("div", 1);
if (!next.newlineBefore) {
if (next.type === "=>") {
this.pushContext(true);
return this.ArrowFunctionHead("", this.BindingIdentifier(), start);
} else if (next.type === "function") {
return this.FunctionExpression();
} else if (next.type === "IDENTIFIER" && isFunctionModifier(value)) {
this.read();
this.pushContext(true);
var ident$0 = this.BindingIdentifier();
next = this.peekToken();
if (next.type !== "=>" || next.newlineBefore)
this.fail();
return this.ArrowFunctionHead(value, ident$0, start);
}
}
return this.Identifier(true);
case "REGEX": return this.RegularExpression();
case "null":
this.read();
return new AST.NullLiteral(token.start, token.end);
case "true":
case "false":
this.read();
return new AST.BooleanLiteral(type === "true", token.start, token.end);
case "this":
this.read();
return new AST.ThisExpression(token.start, token.end);
}
this.unexpected(token);
},
Identifier: function(isVar) {
var token = this.readToken("IDENTIFIER"),
node = new AST.Identifier(token.value, isVar ? "variable" : "", token.start, token.end);
this.checkIdentifier(node);
return node;
},
IdentifierName: function() {
var token = this.readToken("IDENTIFIER", "name");
return new AST.Identifier(token.value, "", token.start, token.end);
},
AtName: function() {
// TODO: Only allow within class? What about nested classes?
var token = this.readToken("ATNAME");
return new AST.AtName(token.value, token.start, token.end);
},
StringLiteral: function() {
var token = this.readToken("STRING"),
node = new AST.StringLiteral(token.value, token.start, token.end);
if (token.strictError)
this.addStrictError(token.strictError, node);
return node;
},
NumberLiteral: function() {
var token = this.readToken("NUMBER"),
node = new AST.NumberLiteral(token.number, token.start, token.end);
if (token.strictError)
this.addStrictError(token.strictError, node);
return node;
},
TemplatePart: function() {
var token = this.readToken("TEMPLATE", "template"),
end = token.templateEnd,
node;
node = new AST.TemplatePart(
token.value,
this.scanner.rawValue(token.start + 1, token.end - (end ? 1 : 2)),
end,
token.start,
token.end);
if (token.strictError)
this.addStrictError(token.strictError, node);
return node;
},
RegularExpression: function() {
// TODO: Validate regular expression against RegExp grammar (21.2.1)
var token = this.readToken("REGEX");
return new AST.RegularExpression(
token.value,
token.regexFlags,
token.start,
token.end);
},
BindingIdentifier: function() {
var token = this.readToken("IDENTIFIER"),
node = new AST.Identifier(token.value, "", token.start, token.end);
this.checkBindingTarget(node);
return node;
},
BindingPattern: function() {
var node;
switch (this.peek()) {
case "{":
node = this.ObjectLiteral();
break;
case "[":
node = this.ArrayLiteral();
break;
default:
return this.BindingIdentifier();
}
this.checkBindingTarget(node);
return node;
},
ParenExpression: function() {
var start = this.nodeStart(),
next = null,
rest = null;
// Push a new context in case we are parsing an arrow function
this.pushMaybeContext();
this.read("(");
if (this.peek() === ")") {
next = this.peekTokenAt("", 1);
if (next.newlineBefore || next.type !== "=>")
this.fail();
this.read(")");
return this.ArrowFunctionHead("", null, start);
}
var expr = this.Expression();
this.read(")");
next = this.peekToken("div");
if (!next.newlineBefore && next.type === "=>")
return this.ArrowFunctionHead("", expr, start);
// Collapse this context into its parent
this.popContext(true);
return new AST.ParenExpression(expr, start, this.nodeEnd());
},
ObjectLiteral: function() {
var start = this.nodeStart(),
comma = false,
list = [],
node;
this.read("{");
while (this.peekUntil("}", "name")) {
if (!comma && node) {
this.read(",");
comma = true;
} else {
comma = false;
list.push(node = this.PropertyDefinition());
}
}
this.read("}");
return new AST.ObjectLiteral(list, comma, start, this.nodeEnd());
},
PropertyDefinition: function() {
if (this.peek("name") === "*")
return this.MethodDefinition(null, "");
var start = this.nodeStart(),
node,
name;
switch (this.peekAt("name", 1)) {
case "=":
// Re-read token as an identifier
this.unpeek();
node = new AST.PatternProperty(
this.Identifier(true),
null,
(this.read(), this.AssignmentExpression()),
start,
this.nodeEnd());
this.addInvalidNode("Invalid property definition in object literal", node);
return node;
case ",":
case "}":
// Re-read token as an identifier
this.unpeek();
return new AST.PropertyDefinition(
this.Identifier(true),
null,
start,
this.nodeEnd());
}
name = this.PropertyName();
if (this.peek("name") === ":") {
return new AST.PropertyDefinition(
name,
(this.read(), this.AssignmentExpression()),
start,
this.nodeEnd());
}
return this.MethodDefinition(name, "");
},
PropertyName: function(allowAtNames) {
var token = this.peekToken("name");
switch (token.type) {
case "IDENTIFIER": return this.IdentifierName();
case "STRING": return this.StringLiteral();
case "NUMBER": return this.NumberLiteral();
case "[": return this.ComputedPropertyName();
case "ATNAME":
if (allowAtNames) return this.AtName();
else break;
}
this.unexpected(token);
},
ComputedPropertyName: function() {
var start = this.nodeStart();
this.read("[");
var expr = this.AssignmentExpression();
this.read("]");
return new AST.ComputedPropertyName(expr, start, this.nodeEnd());
},
ArrayLiteral: function() {
var start = this.nodeStart(),
comma = false,
list = [],
type;
this.read("[");
while (type = this.peekUntil("]")) {
if (type === ",") {
this.read();
comma = true;
list.push(null);
} else {
list.push(this.AssignmentExpression(false, true));
comma = false;
if (this.peek() !== "]") {
this.read(",");
comma = true;
}
}
}
this.read("]");
return new AST.ArrayLiteral(list, comma, start, this.nodeEnd());
},
TemplateExpression: function() {
var atom = this.TemplatePart(),
start = atom.start,
lit = [atom],
sub = [];
while (!atom.templateEnd) {
sub.push(this.Expression());
// Discard any tokens that have been scanned using a different context
this.unpeek();
lit.push(atom = this.TemplatePart());
}
return new AST.TemplateExpression(lit, sub, start, this.nodeEnd());
},
// === Statements ===
Statement: function(label) {
var next;
switch (this.peek()) {
case "IDENTIFIER":
if (this.peekAt("div", 1) === ":")
return this.LabelledStatement();
return this.ExpressionStatement();
case "{": return this.Block();
case ";": return this.EmptyStatement();
case "var": return this.VariableStatement();
case "return": return this.ReturnStatement();
case "break": return this.BreakStatement();
case "continue": return this.ContinueStatement();
case "throw": return this.ThrowStatement();
case "debugger": return this.DebuggerStatement();
case "if": return this.IfStatement();
case "do": return this.DoWhileStatement(label);
case "while": return this.WhileStatement(label);
case "for": return this.ForStatement(label);
case "with": return this.WithStatement();
case "switch": return this.SwitchStatement();
case "try": return this.TryStatement();
default: return this.ExpressionStatement();
}
},
Block: function() {
var start = this.nodeStart();
this.read("{");
var list = this.StatementList(false, false);
this.read("}");
return new AST.Block(list, start, this.nodeEnd());
},
Semicolon: function() {
var token = this.peekToken(),
type = token.type;
if (type === ";") {
this.read();
} else if (type === "}" || type === "EOF" || token.newlineBefore) {
if (this.onASI && !this.onASI(token))
this.unexpected(token);
} else {
this.unexpected(token);
}
},
LabelledStatement: function() {
var start = this.nodeStart(),
label = this.Identifier(),
name = label.value;
if (this.getLabel(name) > 0)
this.fail("Invalid label", label);
this.read(":");
this.setLabel(name, 1);
var statement = this.Statement(name);
this.setLabel(name, 0);
return new AST.LabelledStatement(
label,
statement,
start,
this.nodeEnd());
},
ExpressionStatement: function() {
var start = this.nodeStart(),
expr = this.Expression();
this.Semicolon();
return new AST.ExpressionStatement(expr, start, this.nodeEnd());
},
EmptyStatement: function() {
var start = this.nodeStart();
this.Semicolon();
return new AST.EmptyStatement(start, this.nodeEnd());
},
VariableStatement: function() {
var node = this.VariableDeclaration(false);
this.Semicolon();
node.end = this.nodeEnd();
return node;
},
VariableDeclaration: function(noIn) {
var start = this.nodeStart(),
token = this.peekToken(),
kind = token.type,
list = [];
switch (kind) {
case "var":
case "const":
break;
case "IDENTIFIER":
if (token.value === "let") {
kind = "let";
break;
}
default:
this.fail("Expected var, const, or let");
}
this.read();
while (true) {
list.push(this.VariableDeclarator(noIn, kind));
if (this.peek() === ",") this.read();
else break;
}
return new AST.VariableDeclaration(kind, list, start, this.nodeEnd());
},
VariableDeclarator: function(noIn, kind) {
var start = this.nodeStart(),
pattern = this.BindingPattern(),
init = null;
if ((!noIn && pattern.type !== "Identifier") || this.peek() === "=") {
// NOTE: Patterns must have initializers when not in declaration
// section of a for statement
this.read();
init = this.AssignmentExpression(noIn);
} else if (kind === "const") {
this.fail("Missing const initializer", pattern);
}
return new AST.VariableDeclarator(pattern, init, start, this.nodeEnd());
},
ReturnStatement: function() {
if (!this.context.isFunction)
this.fail("Return statement outside of function");
var start = this.nodeStart();
this.read("return");
var value = this.peekEnd() ? null : this.Expression();
this.Semicolon();
return new AST.ReturnStatement(value, start, this.nodeEnd());
},
BreakStatement: function() {
var start = this.nodeStart(),
context = this.context;
this.read("break");
var label = this.peekEnd() ? null : this.Identifier();
this.Semicolon();
var node = new AST.BreakStatement(label, start, this.nodeEnd());
if (label) {
if (this.getLabel(label.value) === 0)
this.fail("Invalid label", label);
} else if (context.loopDepth === 0 && context.switchDepth === 0) {
this.fail("Break not contained within a switch or loop", node);
}
return node;
},
ContinueStatement: function() {
var start = this.nodeStart(),
context = this.context;
this.read("continue");
var label = this.peekEnd() ? null : this.Identifier();
this.Semicolon();
var node = new AST.ContinueStatement(label, start, this.nodeEnd());
if (label) {
if (this.getLabel(label.value) !== 2)
this.fail("Invalid label", label);
} else if (context.loopDepth === 0) {
this.fail("Continue not contained within a loop", node);
}
return node;
},
ThrowStatement: function() {
var start = this.nodeStart();
this.read("throw");
var expr = this.peekEnd() ? null : this.Expression();
if (expr === null)
this.fail("Missing throw expression");
this.Semicolon();
return new AST.ThrowStatement(expr, start, this.nodeEnd());
},
DebuggerStatement: function() {
var start = this.nodeStart();
this.read("debugger");
this.Semicolon();
return new AST.DebuggerStatement(start, this.nodeEnd());
},
IfStatement: function() {
var start = this.nodeStart();
this.read("if");
this.read("(");
var test = this.Expression(),
body = null,
elseBody = null;
this.read(")");
body = this.Statement();
if (this.peek() === "else") {
this.read();
elseBody = this.Statement();
}
return new AST.IfStatement(test, body, elseBody, start, this.nodeEnd());
},
DoWhileStatement: function(label) {
var start = this.nodeStart(),
body,
test;
if (label)
this.setLabel(label, 2);
this.read("do");
this.context.loopDepth += 1;
body = this.Statement();
this.context.loopDepth -= 1;
this.read("while");
this.read("(");
test = this.Expression();
this.read(")");
return new AST.DoWhileStatement(body, test, start, this.nodeEnd());
},
WhileStatement: function(label) {
var start = this.nodeStart();
if (label)
this.setLabel(label, 2);
this.read("while");
this.read("(");
var expr = this.Expression();
this.read(")");
this.context.loopDepth += 1;
var statement = this.Statement();
this.context.loopDepth -= 1;
return new AST.WhileStatement(
expr,
statement,
start,
this.nodeEnd());
},
ForStatement: function(label) {
var start = this.nodeStart(),
init = null,
async = false,
test,
step;
if (label)
this.setLabel(label, 2);
this.read("for");
if (this.context.isAsync && this.peekKeyword("async")) {
this.read();
async = true;
}
this.read("(");
// Get loop initializer
switch (this.peek()) {
case ";":
break;
case "var":
case "const":
init = this.VariableDeclaration(true);
break;
case "IDENTIFIER":
if (this.peekLet()) {
init = this.VariableDeclaration(true);
break;
}
default:
init = this.Expression(true);
break;
}
if (async || init && this.peekKeyword("of"))
return this.ForOfStatement(async, init, start);
if (init && this.peek() === "in")
return this.ForInStatement(init, start);
this.read(";");
test = this.peek() === ";" ? null : this.Expression();
this.read(";");
step = this.peek() === ")" ? null : this.Expression();
this.read(")");
this.context.loopDepth += 1;
var statement = this.Statement();
this.context.loopDepth -= 1;
return new AST.ForStatement(
init,
test,
step,
statement,
start,
this.nodeEnd());
},
ForInStatement: function(init, start) {
this.checkForInit(init, "in");
this.read("in");
var expr = this.Expression();
this.read(")");
this.context.loopDepth += 1;
var statement = this.Statement();
this.context.loopDepth -= 1;
return new AST.ForInStatement(
init,
expr,
statement,
start,
this.nodeEnd());
},
ForOfStatement: function(async, init, start) {
this.checkForInit(init, "of");
this.readKeyword("of");
var expr = this.AssignmentExpression();
this.read(")");
this.context.loopDepth += 1;
var statement = this.Statement();
this.context.loopDepth -= 1;
return new AST.ForOfStatement(
async,
init,
expr,
statement,
start,
this.nodeEnd());
},
WithStatement: function() {
var start = this.nodeStart();
this.read("with");
this.read("(");
var node = new AST.WithStatement(
this.Expression(),
(this.read(")"), this.Statement()),
start,
this.nodeEnd());
this.addStrictError("With statement is not allowed in strict mode", node);
return node;
},
SwitchStatement: function() {
var start = this.nodeStart();
this.read("switch");
this.read("(");
var head = this.Expression(),
hasDefault = false,
cases = [],
node;
this.read(")");
this.read("{");
this.context.switchDepth += 1;
while (this.peekUntil("}")) {
node = this.SwitchCase();
if (node.test === null) {
if (hasDefault)
this.fail("Switch statement cannot have more than one default", node);
hasDefault = true;
}
cases.push(node);
}
this.context.switchDepth -= 1;
this.read("}");
return new AST.SwitchStatement(head, cases, start, this.nodeEnd());
},
SwitchCase: function() {
var start = this.nodeStart(),
expr = null,
list = [],
type;
if (this.peek() === "default") {
this.read();
} else {
this.read("case");
expr = this.Expression();
}
this.read(":");
while (type = this.peekUntil("}")) {
if (type === "case" || type === "default")
break;
list.push(this.Declaration(false));
}
return new AST.SwitchCase(expr, list, start, this.nodeEnd());
},
TryStatement: function() {
var start = this.nodeStart();
this.read("try");
var tryBlock = this.Block(),
handler = null,
fin = null;
if (this.peek() === "catch")
handler = this.CatchClause();
if (this.peek() === "finally") {
this.read("finally");
fin = this.Block();
}
return new AST.TryStatement(tryBlock, handler, fin, start, this.nodeEnd());
},
CatchClause: function() {
var start = this.nodeStart();
this.read("catch");
this.read("(");
var param = this.BindingPattern();
this.read(")");
return new AST.CatchClause(param, this.Block(), start, this.nodeEnd());
},
// === Declarations ===
StatementList: function(prologue, isModule) {
var list = [],
node,
expr,
dir;
// TODO: is this wrong for braceless statement lists?
while (this.peekUntil("}")) {
node = this.Declaration(isModule);
// Check for directives
if (prologue) {
if (node.type === "ExpressionStatement" &&
node.expression.type === "StringLiteral") {
// Get the non-escaped literal text of the string
expr = node.expression;
dir = this.input.slice(expr.start + 1, expr.end - 1);
if (isDirective(dir)) {
node = new AST.Directive(dir, expr, node.start, node.end);
// Check for strict mode
if (dir === "use strict")
this.setStrict(true);
}
} else {
prologue = false;
}
}
list.push(node);
}
return list;
},
Declaration: function(isModule) {
switch (this.peek()) {
case "function": return this.FunctionDeclaration();
case "class": return this.ClassDeclaration();
case "const": return this.LexicalDeclaration();
case "import":
if (isModule)
return this.ImportDeclaration();
case "export":
if (isModule)
return this.ExportDeclaration();
break;
case "IDENTIFIER":
if (this.peekLet())
return this.LexicalDeclaration();
if (this.peekFunctionModifier())
return this.FunctionDeclaration();
break;
}
return this.Statement();
},
LexicalDeclaration: function() {
var node = this.VariableDeclaration(false);
this.Semicolon();
node.end = this.nodeEnd();
return node;
},
// === Functions ===
FunctionDeclaration: function() {
var start = this.nodeStart(),
kind = "",
token;
token = this.peekToken();
if (isFunctionModifier(keywordFromToken(token))) {
this.read();
kind = token.value;
}
this.read("function");
if (isGeneratorModifier(kind) && this.peek() === "*") {
this.read();
kind = kind ? kind + "-generator" : "generator";
}
this.pushContext();
this.setFunctionType(kind);
var ident = this.BindingIdentifier(),
params = this.FormalParameters(),
body = this.FunctionBody();
this.checkParameters(params);
this.popContext();
return new AST.FunctionDeclaration(
kind,
ident,
params,
body,
start,
this.nodeEnd());
},
FunctionExpression: function() {
var start = this.nodeStart(),
ident = null,
kind = "",
token;
token = this.peekToken();
if (isFunctionModifier(keywordFromToken(token))) {
this.read();
kind = token.value;
}
this.read("function");
if (isGeneratorModifier(kind) && this.peek() === "*") {
this.read();
kind = kind ? kind + "-generator" : "generator";
}
this.pushContext();
this.setFunctionType(kind);
if (this.peek() !== "(")
ident = this.BindingIdentifier();
var params = this.FormalParameters(),
body = this.FunctionBody();
this.checkParameters(params);
this.popContext();
return new AST.FunctionExpression(
kind,
ident,
params,
body,
start,
this.nodeEnd());
},
MethodDefinition: function(name, kind, isClass) {
var start = name ? name.start : this.nodeStart();
if (!name && this.peek("name") === "*") {
this.read();
kind = "generator";
name = this.PropertyName(isClass);
} else {
if (!name)
name = this.PropertyName(isClass);
var val$0 = keywordFromNode(name);
if (this.peek("name") !== "(") {
if (val$0 === "get" || val$0 === "set" || isFunctionModifier(val$0)) {
kind = name.value;
if (isGeneratorModifier(kind) && this.peek("name") === "*") {
this.read();
kind += "-generator";
}
name = this.PropertyName();
}
}
}
this.pushContext();
this.setFunctionType(kind);
this.context.isMethod = true;
this.context.isConstructor = kind === "constructor";
var params = kind === "get" || kind === "set" ?
this.AccessorParameters(kind) :
this.FormalParameters();
var body = this.FunctionBody();
this.checkParameters(params);
this.popContext();
return new AST.MethodDefinition(
false,
kind,
name,
params,
body,
start,
this.nodeEnd());
},
AccessorParameters: function(kind) {
var list = [];
this.read("(");
if (kind === "set")
list.push(this.FormalParameter(false));
this.read(")");
return list;
},
FormalParameters: function() {
var list = [];
this.read("(");
while (this.peekUntil(")")) {
if (list.length > 0)
this.read(",");
// Parameter list may have a trailing rest parameter
if (this.peek() === "...") {
list.push(this.RestParameter());
break;
}
list.push(this.FormalParameter(true));
}
this.read(")");
return list;
},
FormalParameter: function(allowDefault) {
var start = this.nodeStart(),
pattern = this.BindingPattern(),
init = null;
if (allowDefault && this.peek() === "=") {
this.read();
init = this.AssignmentExpression();
}
return new AST.FormalParameter(pattern, init, start, this.nodeEnd());
},
RestParameter: function() {
var start = this.nodeStart();
this.read("...");
return new AST.RestParameter(this.BindingIdentifier(), start, this.nodeEnd());
},
FunctionBody: function() {
this.context.functionBody = true;
var start = this.nodeStart();
this.read("{");
var statements = this.StatementList(true, false);
this.read("}");
return new AST.FunctionBody(statements, start, this.nodeEnd());
},
ArrowFunctionHead: function(kind, formals, start) {
// Context must have been pushed by caller
this.setFunctionType(kind);
if (this.context.hasYieldAwait)
this.fail("Invalid yield or await within arrow function head");
// Transform and validate formal parameters
var params = this.checkArrowParameters(formals);
return new AST.ArrowFunctionHead(params, start, this.nodeEnd());
},
ArrowFunctionBody: function(head, noIn) {
this.read("=>");
var params = head.parameters,
start = head.start,
kind = this.context.isAsync ? "async" : "";
// Use function body context even if parsing expression body form
this.context.functionBody = true;
var body = this.peek() === "{" ?
this.FunctionBody() :
this.AssignmentExpression(noIn);
this.popContext();
return new AST.ArrowFunction(kind, params, body, start, this.nodeEnd());
},
// === Classes ===
ClassDeclaration: function() {
var start = this.nodeStart(),
ident = null,
base = null;
this.read("class");
ident = this.BindingIdentifier();
if (this.peek() === "extends") {
this.read();
base = this.MemberExpression(true);
}
return new AST.ClassDeclaration(
ident,
base,
this.ClassBody(),
start,
this.nodeEnd());
},
ClassExpression: function() {
var start = this.nodeStart(),
ident = null,
base = null;
this.read("class");
if (this.peek() === "IDENTIFIER")
ident = this.BindingIdentifier();
if (this.peek() === "extends") {
this.read();
base = this.MemberExpression(true);
}
return new AST.ClassExpression(
ident,
base,
this.ClassBody(),
start,
this.nodeEnd());
},
ClassBody: function() {
var start = this.nodeStart(),
hasConstructor = false,
atNames = new AtNameSet(this),
list = [];
this.pushContext();
this.setStrict(true);
this.read("{");
while (this.peekUntil("}", "name")) {
var elem$0 = this.ClassElement();
switch (elem$0.type) {
case "MethodDefinition":
if (elem$0.kind === "constructor") {
if (hasConstructor)
this.fail("Duplicate constructor definitions", elem$0.name);
hasConstructor = true;
}
atNames.add(elem$0.name, elem$0.kind);
break;
case "PrivateDeclaration":
atNames.add(elem$0.name, "");
break;
}
list.push(elem$0);
}
this.read("}");
this.popContext();
return new AST.ClassBody(list, start, this.nodeEnd());
},
PrivateDeclaration: function(start, isStatic) {
var name = this.AtName(),
init = null;
if (this.peek() === "=") {
this.read();
init = this.AssignmentExpression();
}
this.Semicolon();
return new AST.PrivateDeclaration(isStatic, name, init, start, this.nodeEnd());
},
EmptyClassElement: function() {
var start = this.nodeStart();
this.read(";");
return new AST.EmptyClassElement(start, this.nodeEnd());
},
ClassElement: function() {
var token = this.peekToken("name"),
start = token.start,
isStatic = false;
if (token.type === ";")
return this.EmptyClassElement();
if (token.type === "IDENTIFIER" &&
token.value === "static" &&
this.peekAt("name", 1) !== "(") {
this.read();
isStatic = true;
}
if (this.peek("name") === "ATNAME" && this.peekAt("name", 1) !== "(")
return this.PrivateDeclaration(start, isStatic);
token = this.peekToken("name");
var kind = "";
if (!isStatic && token.type === "IDENTIFIER" && token.value === "constructor")
kind = "constructor";
var method = this.MethodDefinition(null, kind, true),
name = method.name;
if (isStatic) {
if (name.type === "Identifier" && name.value === "prototype")
this.fail("Invalid prototype property in class definition", name);
} else if (name.type === "Identifier" && name.value === "constructor") {
if (method.kind !== "constructor")
this.fail("Invalid constructor property in class definition", name);
}
method.start = start;
method.static = isStatic;
return method;
},
// === Modules ===
ImportDeclaration: function() {
var start = this.nodeStart(),
imports = null,
from;
this.read("import");
switch (this.peek()) {
case "*":
imports = this.NamespaceImport();
break;
case "{":
imports = this.NamedImports();
break;
case "STRING":
from = this.StringLiteral();
break;
default:
imports = this.DefaultImport();
break;
}
if (!from) {
this.readKeyword("from");
from = this.StringLiteral();
}
this.Semicolon();
return new AST.ImportDeclaration(imports, from, start, this.nodeEnd());
},
DefaultImport: function() {
var start = this.nodeStart(),
ident = this.BindingIdentifier(),
extra = null;
if (this.peek() === ",") {
this.read();
switch (this.peek()) {
case "*":
extra = this.NamespaceImport();
break;
case "{":
extra = this.NamedImports();
break;
default:
this.fail();
}
}
return new AST.DefaultImport(ident, extra, start, this.nodeEnd());
},
NamespaceImport: function() {
var start = this.nodeStart(),
ident;
this.read("*");
this.readKeyword("as");
ident = this.BindingIdentifier();
return new AST.NamespaceImport(ident, start, this.nodeEnd());
},
NamedImports: function() {
var start = this.nodeStart(),
list = [];
this.read("{");
while (this.peekUntil("}")) {
list.push(this.ImportSpecifier());
if (this.peek() === ",")
this.read();
}
this.read("}");
return new AST.NamedImports(list, start, this.nodeEnd());
},
ImportSpecifier: function() {
var start = this.nodeStart(),
hasLocal = false,
local = null,
remote;
if (this.peek() !== "IDENTIFIER") {
// Re-scan token as an identifier name
this.unpeek();
remote = this.IdentifierName();
hasLocal = true;
} else {
remote = this.Identifier();
hasLocal = this.peekKeyword("as");
}
if (hasLocal) {
this.readKeyword("as");
local = this.BindingIdentifier();
} else {
this.checkBindingTarget(remote);
}
return new AST.ImportSpecifier(remote, local, start, this.nodeEnd());
},
ExportDeclaration: function() {
var start = this.nodeStart(),
decl;
this.read("export");
switch (this.peek()) {
case "default":
return this.ExportDefault(start);
case "*":
return this.ExportNamespace(start);
case "{":
return this.ExportNameList(start);
case "var":
case "const":
decl = this.LexicalDeclaration();
break;
case "function":
decl = this.FunctionDeclaration();
break;
case "class":
decl = this.ClassDeclaration();
break;
case "IDENTIFIER":
if (this.peekLet())
decl = this.LexicalDeclaration();
else if (this.peekFunctionModifier())
decl = this.FunctionDeclaration();
else
return this.ExportDefaultFrom(start);
break;
default:
this.fail();
}
return new AST.ExportDeclaration(decl, start, this.nodeEnd());
},
ExportDefault: function(start) {
var binding;
this.read("default");
switch (this.peek()) {
case "class":
binding = this.ClassExpression();
break;
case "function":
binding = this.FunctionExpression();
break;
case "IDENTIFIER":
if (this.peekFunctionModifier()) {
binding = this.FunctionExpression();
break;
}
default:
binding = this.AssignmentExpression();
break;
}
var isDecl = this.transformDefaultExport(binding);
if (!isDecl)
this.Semicolon();
return new AST.ExportDefault(binding, start, this.nodeEnd());
},
ExportNameList: function(start) { var __this = this;
var list = [],
from = null;
this.read("{");
while (this.peekUntil("}", "name")) {
list.push(this.ExportSpecifier());
if (this.peek() === ",")
this.read();
}
this.read("}");
if (this.peekKeyword("from")) {
this.read();
from = this.StringLiteral();
} else {
// Transform identifier names to identifiers
list.forEach(function(node) { return __this.transformIdentifier(node.local); });
}
this.Semicolon();
return new AST.ExportNameList(list, from, start, this.nodeEnd());
},
ExportDefaultFrom: function(start) {
var name = this.Identifier();
this.readKeyword("from");
var from = this.StringLiteral();
this.Semicolon();
return new AST.ExportDefaultFrom(name, from, start, this.nodeEnd());
},
ExportNamespace: function(start) {
var ident = null;
this.read("*");
if (this.peekKeyword("as")) {
this.read();
ident = this.BindingIdentifier();
}
this.readKeyword("from");
var from = this.StringLiteral();
this.Semicolon();
return new AST.ExportNamespace(ident, from, start, this.nodeEnd());
},
ExportSpecifier: function() {
var start = this.nodeStart(),
local = this.IdentifierName(),
remote = null;
if (this.peekKeyword("as")) {
this.read();
remote = this.IdentifierName();
}
return new AST.ExportSpecifier(local, remote, start, this.nodeEnd());
}});
});
function mixin(target) { var __$0, __$1; for (var sources = [], __$2 = 1; __$2 < arguments.length; ++__$2) sources.push(arguments[__$2]);
target = target.prototype;
var ownNames = (__$0 = _esdown.objd(Object), __$0.getOwnPropertyNames), ownSymbols = __$0.getOwnPropertySymbols, ownDesc = __$0.getOwnPropertyDescriptor, hasOwn = (__$1 = _esdown.objd(__$0.prototype), __$1.hasOwnProperty)
;
sources
.map(function(source) { return source.prototype; })
.forEach(function(source) { return ownNames(source)
.concat(ownSymbols(source))
.filter(function(key) { return !hasOwn.call(target, key); })
.forEach(function(key) { return Object.defineProperty(target, key, ownDesc(source, key)); }); }
);
}
// Add externally defined methods
mixin(Parser, Transform, Validate);
exports.Parser = Parser;
}).call(this, _M22);
(function(exports) {
// TODO: How we deal with the insanity that is with statements?
// TODO: Param scopes have empty free lists, which is strange
var Scope = _esdown.class(function(__) { var Scope;
__({ constructor: Scope = function(type) {
this.type = type || "block";
this.names = Object.create(null);
this.free = [];
this.strict = false;
this.parent = null;
this.children = [];
this.varNames = [];
},
resolveName: function(name) {
if (this.names[name])
return this.names[name];
if (this.parent)
return this.parent.resolveName(name);
return null;
}});
});
var ScopeResolver = _esdown.class(function(__) { var ScopeResolver; __({ constructor: ScopeResolver = function() {} });
__({ resolve: function(parseResult) {
this.parseResult = parseResult;
this.stack = [];
this.top = new Scope("var");
this.visit(parseResult.ast);
this.flushFree();
parseResult.scopeTree = this.top;
},
fail: function(msg, node) {
throw this.parseResult.createSyntaxError(msg, node);
},
pushScope: function(type) {
var strict = this.top.strict;
this.stack.push(this.top);
this.top = new Scope(type);
this.top.strict = strict;
return this.top;
},
flushFree: function() {
var map = this.top.names,
free = this.top.free,
next = null,
freeList = [];
if (this.stack.length > 0)
next = this.stack[this.stack.length - 1];
this.top.free = freeList;
free.forEach(function(r) {
var name = r.value;
if (map[name]) {
map[name].references.push(r);
} else {
freeList.push(r);
if (next)
next.free.push(r);
}
});
},
linkScope: function(child) {
var p = this.top;
child.parent = p;
p.children.push(child);
},
popScope: function() { var __this = this;
var scope = this.top,
varNames = scope.varNames,
free = scope.free;
scope.varNames = null;
this.flushFree();
this.top = this.stack.pop();
this.linkScope(scope);
varNames.forEach(function(n) {
if (scope.names[n.value])
__this.fail("Cannot shadow lexical declaration with var", n);
else if (__this.top.type === "var")
__this.addName(n, "var");
else
__this.top.varNames.push(n);
});
},
visit: function(node, kind) { var __this = this;
if (!node)
return;
var f = this[node.type];
if (typeof f === "function")
f.call(this, node, kind);
else
node.children().forEach(function(n) { return __this.visit(n, kind); });
},
hasStrictDirective: function(statements) {
for (var i$0 = 0; i$0 < statements.length; ++i$0) {
var n$0 = statements[i$0];
if (n$0.type !== "Directive")
break;
if (n$0.value === "use strict")
return true;
}
return false;
},
visitFunction: function(params, body, strictParams) { var __this = this;
var paramScope = this.pushScope("param");
if (!this.top.strict &&
body.statements &&
this.hasStrictDirective(body.statements)) {
this.top.strict = true;
}
strictParams = strictParams || this.top.strict;
params.forEach(function(n) {
if (!strictParams && (
n.type !== "FormalParameter" ||
n.initializer ||
n.pattern.type !== "Identifier")) {
strictParams = true;
}
__this.visit(n, "param");
__this.flushFree();
__this.top.free.length = 0;
});
this.pushScope("var");
var blockScope = this.pushScope("block");
this.visit(body, "var");
this.popScope();
this.popScope();
this.popScope();
Object.keys(paramScope.names).forEach(function(name) {
if (blockScope.names[name])
__this.fail("Duplicate block declaration", blockScope.names[name].declarations[0]);
if (strictParams && paramScope.names[name].declarations.length > 1)
__this.fail("Duplicate parameter names", paramScope.names[name].declarations[1]);
});
},
addReference: function(node) {
var name = node.value,
map = this.top.names,
next = this.stack[this.stack.length - 1];
if (map[name]) map[name].references.push(node);
else top.free.push(node);
},
addName: function(node, kind) {
var name = node.value,
map = this.top.names,
record = map[name];
if (record) {
if (kind !== "var" && kind !== "param")
this.fail("Duplicate variable declaration", node);
} else {
if (name === "let" && (kind === "let" || kind === "const"))
this.fail("Invalid binding identifier", node);
map[name] = record = { declarations: [], references: [] };
}
record.declarations.push(node);
},
Script: function(node) { var __this = this;
this.pushScope("block");
if (this.hasStrictDirective(node.statements))
this.top.strict = true;
node.children().forEach(function(n) { return __this.visit(n, "var"); });
this.popScope();
},
Module: function(node) { var __this = this;
this.pushScope("block");
this.top.strict = true;
node.children().forEach(function(n) { return __this.visit(n, "var"); });
this.popScope();
},
Block: function(node) { var __this = this;
this.pushScope("block");
node.children().forEach(function(n) { return __this.visit(n); });
this.popScope();
},
SwitchStatement: function(node) {
this.Block(node);
},
ForOfStatement: function(node) {
this.ForStatement(node);
},
ForInStatement: function(node) {
this.ForStatement(node);
},
ForStatement: function(node) { var __this = this;
this.pushScope("for");
node.children().forEach(function(n) { return __this.visit(n); });
this.popScope();
},
CatchClause: function(node) { var __this = this;
this.pushScope("catch");
this.visit(node.param);
node.body.children().forEach(function(n) { return __this.visit(n); });
this.popScope();
},
VariableDeclaration: function(node) { var __this = this;
node.children().forEach(function(n) { return __this.visit(n, node.kind); });
},
FunctionDeclaration: function(node, kind) {
this.visit(node.identifier, kind);
this.pushScope("function");
this.visitFunction(node.params, node.body, false);
this.popScope();
},
FunctionExpression: function(node) {
this.pushScope("function");
this.visit(node.identifier);
this.visitFunction(node.params, node.body, false);
this.popScope();
},
MethodDefinition: function(node) {
this.pushScope("function");
this.visitFunction(node.params, node.body, true);
this.popScope();
},
ArrowFunction: function(node) {
this.pushScope("function");
this.visitFunction(node.params, node.body, true);
this.popScope();
},
ClassDeclaration: function(node) {
this.visit(node.identifier, "let");
this.pushScope("class");
this.top.strict = true;
this.visit(node.base);
this.visit(node.body);
this.popScope();
},
ClassExpression: function(node) {
this.pushScope("class");
this.top.strict = true;
this.visit(node.identifier);
this.visit(node.base);
this.visit(node.body);
this.popScope();
},
Identifier: function(node, kind) {
switch (node.context) {
case "variable":
this.top.free.push(node);
break;
case "declaration":
if (kind === "var" && this.top.type !== "var")
this.top.varNames.push(node);
else
this.addName(node, kind);
break;
}
}});
});
exports.ScopeResolver = ScopeResolver;
}).call(this, _M23);
(function(exports) {
var Parser = _M22.Parser;
var ScopeResolver = _M23.ScopeResolver;
var AST = _M24;
function addParentLinks(node) {
node.children().forEach(function(child) {
child.parent = node;
addParentLinks(child);
});
}
function parse(input, options) {
options = options || {};
var result = new Parser().parse(input, options);
if (options.resolveScopes)
new ScopeResolver().resolve(result);
if (options.addParentLinks)
addParentLinks(result.ast);
return result;
}
exports.AST = AST;
exports.parse = parse;
}).call(this, _M18);
(function(exports) {
Object.keys(_M18).forEach(function(k) { exports[k] = _M18[k]; });
}).call(this, _M9);
(function(exports) {
var Runtime = {};
Runtime.API =
"const VERSION = \"0.9.9\";\n\
\n\
let Global = (function() {\n\
\n\
try { return global.global } catch (x) {}\n\
try { return self.self } catch (x) {}\n\
return null;\n\
})();\n\
\n\
function toObject(val) {\n\
\n\
if (val == null)\n\
throw new TypeError(val + \" is not an object\");\n\
\n\
return Object(val);\n\
}\n\
\n\
// Iterates over the descriptors for each own property of an object\n\
function forEachDesc(obj, fn) {\n\
\n\
let names = Object.getOwnPropertyNames(obj);\n\
\n\
for (let i = 0; i < names.length; ++i)\n\
fn(names[i], Object.getOwnPropertyDescriptor(obj, names[i]));\n\
\n\
names = Object.getOwnPropertySymbols(obj);\n\
\n\
for (let i = 0; i < names.length; ++i)\n\
fn(names[i], Object.getOwnPropertyDescriptor(obj, names[i]));\n\
\n\
return obj;\n\
}\n\
\n\
// Installs a property into an object, merging \"get\" and \"set\" functions\n\
function mergeProperty(target, name, desc, enumerable) {\n\
\n\
if (desc.get || desc.set) {\n\
\n\
let d = { configurable: true };\n\
if (desc.get) d.get = desc.get;\n\
if (desc.set) d.set = desc.set;\n\
desc = d;\n\
}\n\
\n\
desc.enumerable = enumerable;\n\
Object.defineProperty(target, name, desc);\n\
}\n\
\n\
// Installs properties on an object, merging \"get\" and \"set\" functions\n\
function mergeProperties(target, source, enumerable) {\n\
\n\
forEachDesc(source, (name, desc) => mergeProperty(target, name, desc, enumerable));\n\
}\n\
\n\
// Builds a class\n\
function buildClass(base, def) {\n\
\n\
let parent;\n\
\n\
if (def === void 0) {\n\
\n\
// If no base class is specified, then Object.prototype\n\
// is the parent prototype\n\
def = base;\n\
base = null;\n\
parent = Object.prototype;\n\
\n\
} else if (base === null) {\n\
\n\
// If the base is null, then then then the parent prototype is null\n\
parent = null;\n\
\n\
} else if (typeof base === \"function\") {\n\
\n\
parent = base.prototype;\n\
\n\
// Prototype must be null or an object\n\
if (parent !== null && Object(parent) !== parent)\n\
parent = void 0;\n\
}\n\
\n\
if (parent === void 0)\n\
throw new TypeError;\n\
\n\
// Create the prototype object\n\
let proto = Object.create(parent),\n\
statics = {};\n\
\n\
function __(target, obj) {\n\
\n\
if (!obj) mergeProperties(proto, target, false);\n\
else mergeProperties(target, obj, false);\n\
}\n\
\n\
__.static = obj => mergeProperties(statics, obj, false);\n\
__.super = parent;\n\
__.csuper = base || Function.prototype;\n\
\n\
// Generate method collections, closing over super bindings\n\
def(__);\n\
\n\
let ctor = proto.constructor;\n\
\n\
// Set constructor's prototype\n\
ctor.prototype = proto;\n\
\n\
// Set class \"static\" methods\n\
forEachDesc(statics, (name, desc) => Object.defineProperty(ctor, name, desc));\n\
\n\
// Inherit from base constructor\n\
if (base && ctor.__proto__)\n\
Object.setPrototypeOf(ctor, base);\n\
\n\
return ctor;\n\
}\n\
\n\
Global._esdown = {\n\
\n\
version: VERSION,\n\
\n\
global: Global,\n\
\n\
class: buildClass,\n\
\n\
// Support for iterator protocol\n\
iter(obj) {\n\
\n\
if (obj[Symbol.iterator] !== void 0)\n\
return obj[Symbol.iterator]();\n\
\n\
if (Array.isArray(obj))\n\
return obj.values();\n\
\n\
return obj;\n\
},\n\
\n\
asyncIter(obj) {\n\
\n\
if (obj[Symbol.asyncIterator] !== void 0)\n\
return obj[Symbol.asyncIterator]();\n\
\n\
let iter = { [Symbol.asyncIterator]() { return this } },\n\
inner = _esdown.iter(obj);\n\
\n\
[\"next\", \"throw\", \"return\"].forEach(name => {\n\
\n\
if (name in inner)\n\
iter[name] = value => Promise.resolve(inner[name](value));\n\
});\n\
\n\
return iter;\n\
},\n\
\n\
// Support for computed property names\n\
computed(target) {\n\
\n\
for (let i = 1; i < arguments.length; i += 3) {\n\
\n\
let desc = Object.getOwnPropertyDescriptor(arguments[i + 1], \"_\");\n\
mergeProperty(target, arguments[i], desc, true);\n\
\n\
if (i + 2 < arguments.length)\n\
mergeProperties(target, arguments[i + 2], true);\n\
}\n\
\n\
return target;\n\
},\n\
\n\
// Support for tagged templates\n\
callSite(values, raw) {\n\
\n\
values.raw = raw || values;\n\
return values;\n\
},\n\
\n\
// Support for async functions\n\
async(iter) {\n\
\n\
return new Promise((resolve, reject) => {\n\
\n\
resume(\"next\", void 0);\n\
\n\
function resume(type, value) {\n\
\n\
try {\n\
\n\
let result = iter[type](value);\n\
\n\
if (result.done) {\n\
\n\
resolve(result.value);\n\
\n\
} else {\n\
\n\
Promise.resolve(result.value).then(\n\
x => resume(\"next\", x),\n\
x => resume(\"throw\", x));\n\
}\n\
\n\
} catch (x) { reject(x) }\n\
}\n\
});\n\
},\n\
\n\
// Support for async generators\n\
asyncGen(iter) {\n\
\n\
let front = null, back = null;\n\
\n\
return {\n\
\n\
next(val) { return send(\"next\", val) },\n\
throw(val) { return send(\"throw\", val) },\n\
return(val) { return send(\"return\", val) },\n\
[Symbol.asyncIterator]() { return this },\n\
};\n\
\n\
function send(type, value) {\n\
\n\
return new Promise((resolve, reject) => {\n\
\n\
let x = { type, value, resolve, reject, next: null };\n\
\n\
if (back) {\n\
\n\
back = back.next = x;\n\
\n\
} else {\n\
\n\
front = back = x;\n\
resume(type, value);\n\
}\n\
});\n\
}\n\
\n\
function resume(type, value) {\n\
\n\
if (type === \"return\" && !(type in iter)) {\n\
\n\
// HACK: If the generator does not support the \"return\" method, then\n\
// emulate it (poorly) using throw. (V8 circa 2015-02-13 does not support\n\
// generator.return.)\n\
type = \"throw\";\n\
value = { value, __return: true };\n\
}\n\
\n\
try {\n\
\n\
let result = iter[type](value);\n\
\n\
value = result.value;\n\
\n\
if (typeof value === \"object\" && \"_esdown_await\" in value) {\n\
\n\
if (result.done)\n\
throw new Error(\"Invalid async generator return\");\n\
\n\
Promise.resolve(value._esdown_await).then(\n\
x => resume(\"next\", x),\n\
x => resume(\"throw\", x));\n\
\n\
return;\n\
}\n\
\n\
front.resolve(result);\n\
\n\
} catch (x) {\n\
\n\
if (x && x.__return === true) {\n\
\n\
// HACK: Return-as-throw\n\
front.resolve({ value: x.value, done: true });\n\
\n\
} else {\n\
\n\
front.reject(x);\n\
}\n\
}\n\
\n\
front = front.next;\n\
\n\
if (front) resume(front.type, front.value);\n\
else back = null;\n\
}\n\
},\n\
\n\
// Support for spread operations\n\
spread() {\n\
\n\
return {\n\
\n\
a: [],\n\
\n\
// Add items\n\
s() {\n\
\n\
for (let i = 0; i < arguments.length; ++i)\n\
this.a.push(arguments[i]);\n\
\n\
return this;\n\
},\n\
\n\
// Add the contents of iterables\n\
i(list) {\n\
\n\
if (Array.isArray(list)) {\n\
\n\
this.a.push.apply(this.a, list);\n\
\n\
} else {\n\
\n\
for (let item of list)\n\
this.a.push(item);\n\
}\n\
\n\
return this;\n\
}\n\
\n\
};\n\
},\n\
\n\
// Support for object destructuring\n\
objd(obj) {\n\
\n\
return toObject(obj);\n\
},\n\
\n\
// Support for array destructuring\n\
arrayd(obj) {\n\
\n\
if (Array.isArray(obj)) {\n\
\n\
return {\n\
\n\
at(skip, pos) { return obj[pos] },\n\
rest(skip, pos) { return obj.slice(pos) }\n\
};\n\
}\n\
\n\
let iter = _esdown.iter(toObject(obj));\n\
\n\
return {\n\
\n\
at(skip) {\n\
\n\
let r;\n\
\n\
while (skip--)\n\
r = iter.next();\n\
\n\
return r.value;\n\
},\n\
\n\
rest(skip) {\n\
\n\
let a = [], r;\n\
\n\
while (--skip)\n\
r = iter.next();\n\
\n\
while (r = iter.next(), !r.done)\n\
a.push(r.value);\n\
\n\
return a;\n\
}\n\
};\n\
},\n\
\n\
// Support for private fields\n\
getPrivate(obj, map, name) {\n\
\n\
let entry = map.get(Object(obj));\n\
\n\
if (!entry)\n\
throw new TypeError;\n\
\n\
return entry[name];\n\
},\n\
\n\
setPrivate(obj, map, name, value) {\n\
\n\
let entry = map.get(Object(obj));\n\
\n\
if (!entry)\n\
throw new TypeError;\n\
\n\
return entry[name] = value;\n\
}\n\
\n\
};\n\
";
Runtime.Polyfill =
"// === Polyfill Utilities ===\n\
\n\
function eachKey(obj, fn) {\n\
\n\
let keys = Object.getOwnPropertyNames(obj);\n\
\n\
for (let i = 0; i < keys.length; ++i)\n\
fn(keys[i]);\n\
\n\
if (!Object.getOwnPropertySymbols)\n\
return;\n\
\n\
keys = Object.getOwnPropertySymbols(obj);\n\
\n\
for (let i = 0; i < keys.length; ++i)\n\
fn(keys[i]);\n\
}\n\
\n\
function polyfill(obj, methods) {\n\
\n\
eachKey(methods, key => {\n\
\n\
if (key in obj)\n\
return;\n\
\n\
Object.defineProperty(obj, key, {\n\
\n\
value: methods[key],\n\
configurable: true,\n\
enumerable: false,\n\
writable: true\n\
});\n\
\n\
});\n\
}\n\
\n\
\n\
// === Spec Helpers ===\n\
\n\
var sign = Math.sign || function(val) {\n\
\n\
let n = +val;\n\
\n\
if (n === 0 || Number.isNaN(n))\n\
return n;\n\
\n\
return n < 0 ? -1 : 1;\n\
};\n\
\n\
function toInteger(val) {\n\
\n\
let n = +val;\n\
\n\
return n !== n /* n is NaN */ ? 0 :\n\
(n === 0 || !isFinite(n)) ? n :\n\
sign(n) * Math.floor(Math.abs(n));\n\
}\n\
\n\
function toLength(val) {\n\
\n\
let n = toInteger(val);\n\
return n < 0 ? 0 : Math.min(n, Number.MAX_SAFE_INTEGER);\n\
}\n\
\n\
function sameValue(left, right) {\n\
\n\
if (left === right)\n\
return left !== 0 || 1 / left === 1 / right;\n\
\n\
return left !== left && right !== right;\n\
}\n\
\n\
function isRegExp(val) {\n\
\n\
return Object.prototype.toString.call(val) == \"[object RegExp]\";\n\
}\n\
\n\
function toObject(val) {\n\
\n\
if (val == null)\n\
throw new TypeError(val + \" is not an object\");\n\
\n\
return Object(val);\n\
}\n\
\n\
function iteratorMethod(obj) {\n\
\n\
// TODO: What about typeof === \"string\"?\n\
if (!obj || typeof obj !== \"object\")\n\
return null;\n\
\n\
let m = obj[Symbol.iterator];\n\
\n\
// Generator iterators in Node 0.11.13 do not have a [Symbol.iterator] method\n\
if (!m && typeof obj.next === \"function\" && typeof obj.throw === \"function\")\n\
return function() { return this };\n\
\n\
return m;\n\
}\n\
\n\
function assertThis(val, name) {\n\
\n\
if (val == null)\n\
throw new TypeError(name + \" called on null or undefined\");\n\
}\n\
\n\
// === Symbols ===\n\
\n\
let symbolCounter = 0,\n\
global = _esdown.global;\n\
\n\
function fakeSymbol() {\n\
\n\
return \"__$\" + Math.floor(Math.random() * 1e9) + \"$\" + (++symbolCounter) + \"$__\";\n\
}\n\
\n\
if (!global.Symbol)\n\
global.Symbol = fakeSymbol;\n\
\n\
polyfill(Symbol, {\n\
\n\
iterator: Symbol(\"iterator\"),\n\
\n\
species: Symbol(\"species\"),\n\
\n\
// Experimental async iterator support\n\
asyncIterator: Symbol(\"asyncIterator\"),\n\
\n\
});\n\
\n\
// === Object ===\n\
\n\
polyfill(Object, {\n\
\n\
is: sameValue,\n\
\n\
assign(target, source) {\n\
\n\
target = toObject(target);\n\
\n\
for (let i = 1; i < arguments.length; ++i) {\n\
\n\
source = arguments[i];\n\
\n\
if (source != null) // null or undefined\n\
Object.keys(source).forEach(key => target[key] = source[key]);\n\
}\n\
\n\
return target;\n\
},\n\
\n\
setPrototypeOf(object, proto) {\n\
\n\
// Least effort attempt\n\
object.__proto__ = proto;\n\
},\n\
\n\
getOwnPropertySymbols() {\n\
\n\
// If getOwnPropertySymbols is not supported, then just return an\n\
// empty array so that we can avoid feature testing\n\
}\n\
\n\
});\n\
\n\
// === Number ===\n\
\n\
function isInteger(val) {\n\
\n\
return typeof val === \"number\" && isFinite(val) && toInteger(val) === val;\n\
}\n\
\n\
function epsilon() {\n\
\n\
// Calculate the difference between 1 and the smallest value greater than 1 that\n\
// is representable as a Number value\n\
\n\
let result;\n\
\n\
for (let next = 1; 1 + next !== 1; next = next / 2)\n\
result = next;\n\
\n\
return result;\n\
}\n\
\n\
polyfill(Number, {\n\
\n\
EPSILON: epsilon(),\n\
MAX_SAFE_INTEGER: 9007199254740991,\n\
MIN_SAFE_INTEGER: -9007199254740991,\n\
\n\
parseInt: parseInt,\n\
parseFloat: parseFloat,\n\
isInteger: isInteger,\n\
isFinite(val) { return typeof val === \"number\" && isFinite(val) },\n\
isNaN(val) { return val !== val },\n\
isSafeInteger(val) { return isInteger(val) && Math.abs(val) <= Number.MAX_SAFE_INTEGER }\n\
\n\
});\n\
\n\
// === String ===\n\
\n\
polyfill(String, {\n\
\n\
raw(callsite, ...args) {\n\
\n\
let raw = callsite.raw,\n\
len = toLength(raw.length);\n\
\n\
if (len === 0)\n\
return \"\";\n\
\n\
let s = \"\", i = 0;\n\
\n\
while (true) {\n\
\n\
s += raw[i];\n\
if (i + 1 === len || i >= args.length) break;\n\
s += args[i++];\n\
}\n\
\n\
return s;\n\
},\n\
\n\
fromCodePoint(...points) {\n\
\n\
let out = [];\n\
\n\
points.forEach(next => {\n\
\n\
next = Number(next);\n\
\n\
if (!sameValue(next, toInteger(next)) || next < 0 || next > 0x10ffff)\n\
throw new RangeError(\"Invalid code point \" + next);\n\
\n\
if (next < 0x10000) {\n\
\n\
out.push(String.fromCharCode(next));\n\
\n\
} else {\n\
\n\
next -= 0x10000;\n\
out.push(String.fromCharCode((next >> 10) + 0xD800));\n\
out.push(String.fromCharCode((next % 0x400) + 0xDC00));\n\
}\n\
});\n\
\n\
return out.join(\"\");\n\
}\n\
\n\
});\n\
\n\
// Repeat a string by \"squaring\"\n\
function repeat(s, n) {\n\
\n\
if (n < 1) return \"\";\n\
if (n % 2) return repeat(s, n - 1) + s;\n\
let half = repeat(s, n / 2);\n\
return half + half;\n\
}\n\
\n\
class StringIterator {\n\
\n\
constructor(string) {\n\
\n\
this.string = string;\n\
this.current = 0;\n\
}\n\
\n\
next() {\n\
\n\
let s = this.string,\n\
i = this.current,\n\
len = s.length;\n\
\n\
if (i >= len) {\n\
\n\
this.current = Infinity;\n\
return { value: void 0, done: true };\n\
}\n\
\n\
let c = s.charCodeAt(i),\n\
chars = 1;\n\
\n\
if (c >= 0xD800 && c <= 0xDBFF && i + 1 < s.length) {\n\
\n\
c = s.charCodeAt(i + 1);\n\
chars = (c < 0xDC00 || c > 0xDFFF) ? 1 : 2;\n\
}\n\
\n\
this.current += chars;\n\
\n\
return { value: s.slice(i, this.current), done: false };\n\
}\n\
\n\
[Symbol.iterator]() { return this }\n\
\n\
}\n\
\n\
polyfill(String.prototype, {\n\
\n\
repeat(count) {\n\
\n\
assertThis(this, \"String.prototype.repeat\");\n\
\n\
let string = String(this);\n\
\n\
count = toInteger(count);\n\
\n\
if (count < 0 || count === Infinity)\n\
throw new RangeError(\"Invalid count value\");\n\
\n\
return repeat(string, count);\n\
},\n\
\n\
startsWith(search) {\n\
\n\
assertThis(this, \"String.prototype.startsWith\");\n\
\n\
if (isRegExp(search))\n\
throw new TypeError(\"First argument to String.prototype.startsWith must not be a regular expression\");\n\
\n\
let string = String(this);\n\
\n\
search = String(search);\n\
\n\
let pos = arguments.length > 1 ? arguments[1] : undefined,\n\
start = Math.max(toInteger(pos), 0);\n\
\n\
return string.slice(start, start + search.length) === search;\n\
},\n\
\n\
endsWith(search) {\n\
\n\
assertThis(this, \"String.prototype.endsWith\");\n\
\n\
if (isRegExp(search))\n\
throw new TypeError(\"First argument to String.prototype.endsWith must not be a regular expression\");\n\
\n\
let string = String(this);\n\
\n\
search = String(search);\n\
\n\
let len = string.length,\n\
arg = arguments.length > 1 ? arguments[1] : undefined,\n\
pos = arg === undefined ? len : toInteger(arg),\n\
end = Math.min(Math.max(pos, 0), len);\n\
\n\
return string.slice(end - search.length, end) === search;\n\
},\n\
\n\
contains(search) {\n\
\n\
assertThis(this, \"String.prototype.contains\");\n\
\n\
let string = String(this),\n\
pos = arguments.length > 1 ? arguments[1] : undefined;\n\
\n\
// Somehow this trick makes method 100% compat with the spec\n\
return string.indexOf(search, pos) !== -1;\n\
},\n\
\n\
codePointAt(pos) {\n\
\n\
assertThis(this, \"String.prototype.codePointAt\");\n\
\n\
let string = String(this),\n\
len = string.length;\n\
\n\
pos = toInteger(pos);\n\
\n\
if (pos < 0 || pos >= len)\n\
return undefined;\n\
\n\
let a = string.charCodeAt(pos);\n\
\n\
if (a < 0xD800 || a > 0xDBFF || pos + 1 === len)\n\
return a;\n\
\n\
let b = string.charCodeAt(pos + 1);\n\
\n\
if (b < 0xDC00 || b > 0xDFFF)\n\
return a;\n\
\n\
return ((a - 0xD800) * 1024) + (b - 0xDC00) + 0x10000;\n\
},\n\
\n\
[Symbol.iterator]() {\n\
\n\
assertThis(this, \"String.prototype[Symbol.iterator]\");\n\
return new StringIterator(this);\n\
}\n\
\n\
});\n\
\n\
// === Array ===\n\
\n\
class ArrayIterator {\n\
\n\
constructor(array, kind) {\n\
\n\
this.array = array;\n\
this.current = 0;\n\
this.kind = kind;\n\
}\n\
\n\
next() {\n\
\n\
let length = toLength(this.array.length),\n\
index = this.current;\n\
\n\
if (index >= length) {\n\
\n\
this.current = Infinity;\n\
return { value: void 0, done: true };\n\
}\n\
\n\
this.current += 1;\n\
\n\
switch (this.kind) {\n\
\n\
case \"values\":\n\
return { value: this.array[index], done: false };\n\
\n\
case \"entries\":\n\
return { value: [ index, this.array[index] ], done: false };\n\
\n\
default:\n\
return { value: index, done: false };\n\
}\n\
}\n\
\n\
[Symbol.iterator]() { return this }\n\
\n\
}\n\
\n\
polyfill(Array, {\n\
\n\
from(list) {\n\
\n\
list = toObject(list);\n\
\n\
let ctor = typeof this === \"function\" ? this : Array, // TODO: Always use \"this\"?\n\
map = arguments[1],\n\
thisArg = arguments[2],\n\
i = 0,\n\
out;\n\
\n\
if (map !== void 0 && typeof map !== \"function\")\n\
throw new TypeError(map + \" is not a function\");\n\
\n\
var getIter = iteratorMethod(list);\n\
\n\
if (getIter) {\n\
\n\
let iter = getIter.call(list),\n\
result;\n\
\n\
out = new ctor;\n\
\n\
while (result = iter.next(), !result.done) {\n\
\n\
out[i++] = map ? map.call(thisArg, result.value, i) : result.value;\n\
out.length = i;\n\
}\n\
\n\
} else {\n\
\n\
let len = toLength(list.length);\n\
\n\
out = new ctor(len);\n\
\n\
for (; i < len; ++i)\n\
out[i] = map ? map.call(thisArg, list[i], i) : list[i];\n\
\n\
out.length = len;\n\
}\n\
\n\
return out;\n\
},\n\
\n\
of(...items) {\n\
\n\
let ctor = typeof this === \"function\" ? this : Array;\n\
\n\
if (ctor === Array)\n\
return items;\n\
\n\
let len = items.length,\n\
out = new ctor(len);\n\
\n\
for (let i = 0; i < len; ++i)\n\
out[i] = items[i];\n\
\n\
out.length = len;\n\
\n\
return out;\n\
}\n\
\n\
});\n\
\n\
function arrayFind(obj, pred, thisArg, type) {\n\
\n\
let len = toLength(obj.length),\n\
val;\n\
\n\
if (typeof pred !== \"function\")\n\
throw new TypeError(pred + \" is not a function\");\n\
\n\
for (let i = 0; i < len; ++i) {\n\
\n\
val = obj[i];\n\
\n\
if (pred.call(thisArg, val, i, obj))\n\
return type === \"value\" ? val : i;\n\
}\n\
\n\
return type === \"value\" ? void 0 : -1;\n\
}\n\
\n\
polyfill(Array.prototype, {\n\
\n\
copyWithin(target, start) {\n\
\n\
let obj = toObject(this),\n\
len = toLength(obj.length),\n\
end = arguments[2];\n\
\n\
target = toInteger(target);\n\
start = toInteger(start);\n\
\n\
let to = target < 0 ? Math.max(len + target, 0) : Math.min(target, len),\n\
from = start < 0 ? Math.max(len + start, 0) : Math.min(start, len);\n\
\n\
end = end !== void 0 ? toInteger(end) : len;\n\
end = end < 0 ? Math.max(len + end, 0) : Math.min(end, len);\n\
\n\
let count = Math.min(end - from, len - to),\n\
dir = 1;\n\
\n\
if (from < to && to < from + count) {\n\
\n\
dir = -1;\n\
from += count - 1;\n\
to += count - 1;\n\
}\n\
\n\
for (; count > 0; --count) {\n\
\n\
if (from in obj) obj[to] = obj[from];\n\
else delete obj[to];\n\
\n\
from += dir;\n\
to += dir;\n\
}\n\
\n\
return obj;\n\
},\n\
\n\
fill(value) {\n\
\n\
let obj = toObject(this),\n\
len = toLength(obj.length),\n\
start = toInteger(arguments[1]),\n\
pos = start < 0 ? Math.max(len + start, 0) : Math.min(start, len),\n\
end = arguments.length > 2 ? toInteger(arguments[2]) : len;\n\
\n\
end = end < 0 ? Math.max(len + end, 0) : Math.min(end, len);\n\
\n\
for (; pos < end; ++pos)\n\
obj[pos] = value;\n\
\n\
return obj;\n\
},\n\
\n\
find(pred) {\n\
\n\
return arrayFind(toObject(this), pred, arguments[1], \"value\");\n\
},\n\
\n\
findIndex(pred) {\n\
\n\
return arrayFind(toObject(this), pred, arguments[1], \"index\");\n\
},\n\
\n\
values() { return new ArrayIterator(this, \"values\") },\n\
\n\
entries() { return new ArrayIterator(this, \"entries\") },\n\
\n\
keys() { return new ArrayIterator(this, \"keys\") },\n\
\n\
[Symbol.iterator]() { return this.values() }\n\
\n\
});\n\
";
Runtime.MapSet =
"let global = _esdown.global,\n\
ORIGIN = {},\n\
REMOVED = {};\n\
\n\
class MapNode {\n\
\n\
constructor(key, val) {\n\
\n\
this.key = key;\n\
this.value = val;\n\
this.prev = this;\n\
this.next = this;\n\
}\n\
\n\
insert(next) {\n\
\n\
this.next = next;\n\
this.prev = next.prev;\n\
this.prev.next = this;\n\
this.next.prev = this;\n\
}\n\
\n\
remove() {\n\
\n\
this.prev.next = this.next;\n\
this.next.prev = this.prev;\n\
this.key = REMOVED;\n\
}\n\
\n\
}\n\
\n\
class MapIterator {\n\
\n\
constructor(node, kind) {\n\
\n\
this.current = node;\n\
this.kind = kind;\n\
}\n\
\n\
next() {\n\
\n\
let node = this.current;\n\
\n\
while (node.key === REMOVED)\n\
node = this.current = this.current.next;\n\
\n\
if (node.key === ORIGIN)\n\
return { value: void 0, done: true };\n\
\n\
this.current = this.current.next;\n\
\n\
switch (this.kind) {\n\
\n\
case \"values\":\n\
return { value: node.value, done: false };\n\
\n\
case \"entries\":\n\
return { value: [ node.key, node.value ], done: false };\n\
\n\
default:\n\
return { value: node.key, done: false };\n\
}\n\
}\n\
\n\
[Symbol.iterator]() { return this }\n\
}\n\
\n\
function hashKey(key) {\n\
\n\
switch (typeof key) {\n\
\n\
case \"string\": return \"$\" + key;\n\
case \"number\": return String(key);\n\
}\n\
\n\
throw new TypeError(\"Map and Set keys must be strings or numbers in esdown\");\n\
}\n\
\n\
class Map {\n\
\n\
constructor() {\n\
\n\
if (arguments.length > 0)\n\
throw new Error(\"Arguments to Map constructor are not supported in esdown\");\n\
\n\
this._index = {};\n\
this._origin = new MapNode(ORIGIN);\n\
}\n\
\n\
clear() {\n\
\n\
for (let node = this._origin.next; node !== this._origin; node = node.next)\n\
node.key = REMOVED;\n\
\n\
this._index = {};\n\
this._origin = new MapNode(ORIGIN);\n\
}\n\
\n\
delete(key) {\n\
\n\
let h = hashKey(key),\n\
node = this._index[h];\n\
\n\
if (node) {\n\
\n\
node.remove();\n\
delete this._index[h];\n\
return true;\n\
}\n\
\n\
return false;\n\
}\n\
\n\
forEach(fn) {\n\
\n\
let thisArg = arguments[1];\n\
\n\
if (typeof fn !== \"function\")\n\
throw new TypeError(fn + \" is not a function\");\n\
\n\
for (let node = this._origin.next; node.key !== ORIGIN; node = node.next)\n\
if (node.key !== REMOVED)\n\
fn.call(thisArg, node.value, node.key, this);\n\
}\n\
\n\
get(key) {\n\
\n\
let h = hashKey(key),\n\
node = this._index[h];\n\
\n\
return node ? node.value : void 0;\n\
}\n\
\n\
has(key) {\n\
\n\
return hashKey(key) in this._index;\n\
}\n\
\n\
set(key, val) {\n\
\n\
let h = hashKey(key),\n\
node = this._index[h];\n\
\n\
if (node) {\n\
\n\
node.value = val;\n\
return;\n\
}\n\
\n\
node = new MapNode(key, val);\n\
\n\
this._index[h] = node;\n\
node.insert(this._origin);\n\
}\n\
\n\
get size() {\n\
\n\
return Object.keys(this._index).length;\n\
}\n\
\n\
keys() { return new MapIterator(this._origin.next, \"keys\") }\n\
values() { return new MapIterator(this._origin.next, \"values\") }\n\
entries() { return new MapIterator(this._origin.next, \"entries\") }\n\
\n\
[Symbol.iterator]() { return new MapIterator(this._origin.next, \"entries\") }\n\
\n\
}\n\
\n\
let mapSet = Map.prototype.set;\n\
\n\
class Set {\n\
\n\
constructor() {\n\
\n\
if (arguments.length > 0)\n\
throw new Error(\"Arguments to Set constructor are not supported in esdown\");\n\
\n\
this._index = {};\n\
this._origin = new MapNode(ORIGIN);\n\
}\n\
\n\
add(key) { return mapSet.call(this, key, key) }\n\
\n\
[Symbol.iterator]() { return new MapIterator(this._origin.next, \"entries\") }\n\
\n\
}\n\
\n\
// Copy shared prototype members to Set\n\
[\"clear\", \"delete\", \"forEach\", \"has\", \"size\", \"keys\", \"values\", \"entries\"].forEach(k => {\n\
\n\
let d = Object.getOwnPropertyDescriptor(Map.prototype, k);\n\
Object.defineProperty(Set.prototype, k, d);\n\
});\n\
\n\
if (!global.Map || !global.Map.prototype.entries) {\n\
\n\
global.Map = Map;\n\
global.Set = Set;\n\
}\n\
";
Runtime.Promise =
"(function() { \"use strict\";\n\
\n\
// Find global variable and exit if Promise is defined on it\n\
\n\
var Global = (function() {\n\
if (typeof window !== \"undefined\" && window && window.window === window)\n\
return window;\n\
if (typeof global !== \"undefined\" && global && global.global === global)\n\
return global;\n\
throw new Error(\"Unable to determine global object\");\n\
})();\n\
\n\
if (typeof Global.Promise === \"function\")\n\
return;\n\
\n\
// Create an efficient microtask queueing mechanism\n\
\n\
var runLater = (function() {\n\
// Node\n\
if (Global.process && typeof process.version === \"string\") {\n\
return Global.setImmediate ?\n\
function(fn) { setImmediate(fn); } :\n\
function(fn) { process.nextTick(fn); };\n\
}\n\
\n\
// Newish Browsers\n\
var Observer = Global.MutationObserver || Global.WebKitMutationObserver;\n\
\n\
if (Observer) {\n\
var div = document.createElement(\"div\"),\n\
queuedFn = void 0;\n\
\n\
var observer = new Observer(function() {\n\
var fn = queuedFn;\n\
queuedFn = void 0;\n\
fn();\n\
});\n\
\n\
observer.observe(div, { attributes: true });\n\
\n\
return function(fn) {\n\
if (queuedFn !== void 0)\n\
throw new Error(\"Only one function can be queued at a time\");\n\
queuedFn = fn;\n\
div.classList.toggle(\"x\");\n\
};\n\
}\n\
\n\
// Fallback\n\
return function(fn) { setTimeout(fn, 0); };\n\
})();\n\
\n\
var EnqueueMicrotask = (function() {\n\
var queue = null;\n\
\n\
function flush() {\n\
var q = queue;\n\
queue = null;\n\
for (var i = 0; i < q.length; ++i)\n\
q[i]();\n\
}\n\
\n\
return function PromiseEnqueueMicrotask(fn) {\n\
// fn must not throw\n\
if (!queue) {\n\
queue = [];\n\
runLater(flush);\n\
}\n\
queue.push(fn);\n\
};\n\
})();\n\
\n\
// Mock V8 internal functions and vars\n\
\n\
function SET_PRIVATE(obj, prop, val) { obj[prop] = val; }\n\
function GET_PRIVATE(obj, prop) { return obj[prop]; }\n\
function IS_SPEC_FUNCTION(obj) { return typeof obj === \"function\"; }\n\
function IS_SPEC_OBJECT(obj) { return obj === Object(obj); }\n\
function HAS_DEFINED_PRIVATE(obj, prop) { return prop in obj; }\n\
function IS_UNDEFINED(x) { return x === void 0; }\n\
function MakeTypeError(msg) { return new TypeError(msg); }\n\
\n\
// In IE8 Object.defineProperty only works on DOM nodes, and defineProperties does not exist\n\
var _defineProperty = Object.defineProperties && Object.defineProperty;\n\
\n\
function AddNamedProperty(target, name, value) {\n\
if (!_defineProperty) {\n\
target[name] = value;\n\
return;\n\
}\n\
\n\
_defineProperty(target, name, {\n\
configurable: true,\n\
writable: true,\n\
enumerable: false,\n\
value: value\n\
});\n\
}\n\
\n\
function InstallFunctions(target, attr, list) {\n\
for (var i = 0; i < list.length; i += 2)\n\
AddNamedProperty(target, list[i], list[i + 1]);\n\
}\n\
\n\
var IsArray = Array.isArray || (function(obj) {\n\
var str = Object.prototype.toString;\n\
return function(obj) { return str.call(obj) === \"[object Array]\" };\n\
})();\n\
\n\
var UNDEFINED, DONT_ENUM, InternalArray = Array;\n\
\n\
// V8 Implementation\n\
\n\
var IsPromise;\n\
var PromiseCreate;\n\
var PromiseResolve;\n\
var PromiseReject;\n\
var PromiseChain;\n\
var PromiseCatch;\n\
var PromiseThen;\n\
\n\
// Status values: 0 = pending, +1 = resolved, -1 = rejected\n\
var promiseStatus = \"Promise#status\";\n\
var promiseValue = \"Promise#value\";\n\
var promiseOnResolve = \"Promise#onResolve\";\n\
var promiseOnReject = \"Promise#onReject\";\n\
var promiseRaw = {};\n\
var promiseHasHandler = \"Promise#hasHandler\";\n\
var lastMicrotaskId = 0;\n\
\n\
var $Promise = function Promise(resolver) {\n\
if (resolver === promiseRaw) return;\n\
if (!IS_SPEC_FUNCTION(resolver))\n\
throw MakeTypeError('resolver_not_a_function', [resolver]);\n\
var promise = PromiseInit(this);\n\
try {\n\
resolver(function(x) { PromiseResolve(promise, x) },\n\
function(r) { PromiseReject(promise, r) });\n\
} catch (e) {\n\
PromiseReject(promise, e);\n\
}\n\
}\n\
\n\
// Core functionality.\n\
\n\
function PromiseSet(promise, status, value, onResolve, onReject) {\n\
SET_PRIVATE(promise, promiseStatus, status);\n\
SET_PRIVATE(promise, promiseValue, value);\n\
SET_PRIVATE(promise, promiseOnResolve, onResolve);\n\
SET_PRIVATE(promise, promiseOnReject, onReject);\n\
return promise;\n\
}\n\
\n\
function PromiseInit(promise) {\n\
return PromiseSet(promise, 0, UNDEFINED, new InternalArray, new InternalArray);\n\
}\n\
\n\
function PromiseDone(promise, status, value, promiseQueue) {\n\
if (GET_PRIVATE(promise, promiseStatus) === 0) {\n\
PromiseEnqueue(value, GET_PRIVATE(promise, promiseQueue), status);\n\
PromiseSet(promise, status, value);\n\
}\n\
}\n\
\n\
function PromiseCoerce(constructor, x) {\n\
if (!IsPromise(x) && IS_SPEC_OBJECT(x)) {\n\
var then;\n\
try {\n\
then = x.then;\n\
} catch(r) {\n\
return PromiseRejected.call(constructor, r);\n\
}\n\
if (IS_SPEC_FUNCTION(then)) {\n\
var deferred = PromiseDeferred.call(constructor);\n\
try {\n\
then.call(x, deferred.resolve, deferred.reject);\n\
} catch(r) {\n\
deferred.reject(r);\n\
}\n\
return deferred.promise;\n\
}\n\
}\n\
return x;\n\
}\n\
\n\
function PromiseHandle(value, handler, deferred) {\n\
try {\n\
var result = handler(value);\n\
if (result === deferred.promise)\n\
throw MakeTypeError('promise_cyclic', [result]);\n\
else if (IsPromise(result))\n\
PromiseChain.call(result, deferred.resolve, deferred.reject);\n\
else\n\
deferred.resolve(result);\n\
} catch (exception) {\n\
try { deferred.reject(exception) } catch (e) { }\n\
}\n\
}\n\
\n\
function PromiseEnqueue(value, tasks, status) {\n\
EnqueueMicrotask(function() {\n\
for (var i = 0; i < tasks.length; i += 2)\n\
PromiseHandle(value, tasks[i], tasks[i + 1]);\n\
});\n\
}\n\
\n\
function PromiseIdResolveHandler(x) { return x }\n\
function PromiseIdRejectHandler(r) { throw r }\n\
\n\
function PromiseNopResolver() {}\n\
\n\
// -------------------------------------------------------------------\n\
// Define exported functions.\n\
\n\
// For bootstrapper.\n\
\n\
IsPromise = function IsPromise(x) {\n\
return IS_SPEC_OBJECT(x) && HAS_DEFINED_PRIVATE(x, promiseStatus);\n\
};\n\
\n\
PromiseCreate = function PromiseCreate() {\n\
return new $Promise(PromiseNopResolver);\n\
};\n\
\n\
PromiseResolve = function PromiseResolve(promise, x) {\n\
PromiseDone(promise, +1, x, promiseOnResolve);\n\
};\n\
\n\
PromiseReject = function PromiseReject(promise, r) {\n\
PromiseDone(promise, -1, r, promiseOnReject);\n\
};\n\
\n\
// Convenience.\n\
\n\
function PromiseDeferred() {\n\
if (this === $Promise) {\n\
// Optimized case, avoid extra closure.\n\
var promise = PromiseInit(new $Promise(promiseRaw));\n\
return {\n\
promise: promise,\n\
resolve: function(x) { PromiseResolve(promise, x) },\n\
reject: function(r) { PromiseReject(promise, r) }\n\
};\n\
} else {\n\
var result = {};\n\
result.promise = new this(function(resolve, reject) {\n\
result.resolve = resolve;\n\
result.reject = reject;\n\
});\n\
return result;\n\
}\n\
}\n\
\n\
function PromiseResolved(x) {\n\
if (this === $Promise) {\n\
// Optimized case, avoid extra closure.\n\
return PromiseSet(new $Promise(promiseRaw), +1, x);\n\
} else {\n\
return new this(function(resolve, reject) { resolve(x) });\n\
}\n\
}\n\
\n\
function PromiseRejected(r) {\n\
var promise;\n\
if (this === $Promise) {\n\
// Optimized case, avoid extra closure.\n\
promise = PromiseSet(new $Promise(promiseRaw), -1, r);\n\
} else {\n\
promise = new this(function(resolve, reject) { reject(r) });\n\
}\n\
return promise;\n\
}\n\
\n\
// Simple chaining.\n\
\n\
PromiseChain = function PromiseChain(onResolve, onReject) {\n\
onResolve = IS_UNDEFINED(onResolve) ? PromiseIdResolveHandler : onResolve;\n\
onReject = IS_UNDEFINED(onReject) ? PromiseIdRejectHandler : onReject;\n\
var deferred = PromiseDeferred.call(this.constructor);\n\
switch (GET_PRIVATE(this, promiseStatus)) {\n\
case UNDEFINED:\n\
throw MakeTypeError('not_a_promise', [this]);\n\
case 0: // Pending\n\
GET_PRIVATE(this, promiseOnResolve).push(onResolve, deferred);\n\
GET_PRIVATE(this, promiseOnReject).push(onReject, deferred);\n\
break;\n\
case +1: // Resolved\n\
PromiseEnqueue(GET_PRIVATE(this, promiseValue), [onResolve, deferred], +1);\n\
break;\n\
case -1: // Rejected\n\
PromiseEnqueue(GET_PRIVATE(this, promiseValue), [onReject, deferred], -1);\n\
break;\n\
}\n\
// Mark this promise as having handler.\n\
SET_PRIVATE(this, promiseHasHandler, true);\n\
return deferred.promise;\n\
}\n\
\n\
PromiseCatch = function PromiseCatch(onReject) {\n\
return this.then(UNDEFINED, onReject);\n\
}\n\
\n\
// Multi-unwrapped chaining with thenable coercion.\n\
\n\
PromiseThen = function PromiseThen(onResolve, onReject) {\n\
onResolve = IS_SPEC_FUNCTION(onResolve) ? onResolve : PromiseIdResolveHandler;\n\
onReject = IS_SPEC_FUNCTION(onReject) ? onReject : PromiseIdRejectHandler;\n\
var that = this;\n\
var constructor = this.constructor;\n\
return PromiseChain.call(\n\
this,\n\
function(x) {\n\
x = PromiseCoerce(constructor, x);\n\
return x === that ? onReject(MakeTypeError('promise_cyclic', [x])) :\n\
IsPromise(x) ? x.then(onResolve, onReject) :\n\
onResolve(x);\n\
},\n\
onReject);\n\
}\n\
\n\
// Combinators.\n\
\n\
function PromiseCast(x) {\n\
return IsPromise(x) ? x : new this(function(resolve) { resolve(x) });\n\
}\n\
\n\
function PromiseAll(values) {\n\
var deferred = PromiseDeferred.call(this);\n\
var resolutions = [];\n\
if (!IsArray(values)) {\n\
deferred.reject(MakeTypeError('invalid_argument'));\n\
return deferred.promise;\n\
}\n\
try {\n\
var count = values.length;\n\
if (count === 0) {\n\
deferred.resolve(resolutions);\n\
} else {\n\
for (var i = 0; i < values.length; ++i) {\n\
this.resolve(values[i]).then(\n\
(function() {\n\
// Nested scope to get closure over current i (and avoid .bind).\n\
var i_captured = i;\n\
return function(x) {\n\
resolutions[i_captured] = x;\n\
if (--count === 0) deferred.resolve(resolutions);\n\
};\n\
})(),\n\
function(r) { deferred.reject(r) });\n\
}\n\
}\n\
} catch (e) {\n\
deferred.reject(e);\n\
}\n\
return deferred.promise;\n\
}\n\
\n\
function PromiseOne(values) {\n\
var deferred = PromiseDeferred.call(this);\n\
if (!IsArray(values)) {\n\
deferred.reject(MakeTypeError('invalid_argument'));\n\
return deferred.promise;\n\
}\n\
try {\n\
for (var i = 0; i < values.length; ++i) {\n\
this.resolve(values[i]).then(\n\
function(x) { deferred.resolve(x) },\n\
function(r) { deferred.reject(r) });\n\
}\n\
} catch (e) {\n\
deferred.reject(e);\n\
}\n\
return deferred.promise;\n\
}\n\
\n\
// -------------------------------------------------------------------\n\
// Install exported functions.\n\
\n\
AddNamedProperty(Global, 'Promise', $Promise, DONT_ENUM);\n\
\n\
InstallFunctions($Promise, DONT_ENUM, [\n\
\"defer\", PromiseDeferred,\n\
\"accept\", PromiseResolved,\n\
\"reject\", PromiseRejected,\n\
\"all\", PromiseAll,\n\
\"race\", PromiseOne,\n\
\"resolve\", PromiseCast\n\
]);\n\
\n\
InstallFunctions($Promise.prototype, DONT_ENUM, [\n\
\"chain\", PromiseChain,\n\
\"then\", PromiseThen,\n\
\"catch\", PromiseCatch\n\
]);\n\
\n\
})();\n\
";
Runtime.Observable =
"// === Job Queueing ===\n\
\n\
const enqueueJob = (function() {\n\
\n\
// Node\n\
if (typeof self === \"undefined\" && typeof global !== \"undefined\") {\n\
\n\
return global.setImmediate ?\n\
fn => { global.setImmediate(fn) } :\n\
fn => { process.nextTick(fn) };\n\
}\n\
\n\
// Newish Browsers\n\
let Observer = self.MutationObserver || self.WebKitMutationObserver;\n\
\n\
if (Observer) {\n\
\n\
let div = document.createElement(\"div\"),\n\
twiddle = _=> div.classList.toggle(\"x\"),\n\
queue = [];\n\
\n\
let observer = new Observer(_=> {\n\
\n\
if (queue.length > 1)\n\
twiddle();\n\
\n\
while (queue.length > 0)\n\
queue.shift()();\n\
});\n\
\n\
observer.observe(div, { attributes: true });\n\
\n\
return fn => {\n\
\n\
queue.push(fn);\n\
\n\
if (queue.length === 1)\n\
twiddle();\n\
};\n\
}\n\
\n\
// Fallback\n\
return fn => { setTimeout(fn, 0) };\n\
\n\
})();\n\
\n\
// === Symbol Polyfills ===\n\
\n\
function polyfillSymbol(name) {\n\
\n\
if (!Symbol[name])\n\
Object.defineProperty(Symbol, name, { value: Symbol(name) });\n\
}\n\
\n\
polyfillSymbol(\"observable\");\n\
\n\
// === Abstract Operations ===\n\
\n\
function cancelSubscription(observer) {\n\
\n\
let subscription = observer._subscription;\n\
\n\
if (!subscription)\n\
return;\n\
\n\
// Drop the reference to the subscription so that we don't unsubscribe\n\
// more than once\n\
observer._subscription = undefined;\n\
\n\
try {\n\
\n\
// Call the unsubscribe function\n\
subscription.unsubscribe();\n\
\n\
} finally {\n\
\n\
// Drop the reference to the inner observer so that no more notifications\n\
// will be sent\n\
observer._observer = undefined;\n\
}\n\
}\n\
\n\
function closeSubscription(observer) {\n\
\n\
observer._observer = undefined;\n\
cancelSubscription(observer);\n\
}\n\
\n\
function hasUnsubscribe(x) {\n\
\n\
return Object(x) === x && typeof x.unsubscribe === \"function\";\n\
}\n\
\n\
class SubscriptionObserver {\n\
\n\
constructor(observer) {\n\
\n\
this._observer = observer;\n\
this._subscription = undefined;\n\
}\n\
\n\
next(value) {\n\
\n\
let observer = this._observer;\n\
\n\
// If the stream if closed, then return a \"done\" result\n\
if (!observer)\n\
return { value: undefined, done: true };\n\
\n\
let result;\n\
\n\
try {\n\
\n\
// Send the next value to the sink\n\
result = observer.next(value);\n\
\n\
} catch (e) {\n\
\n\
// If the observer throws, then close the stream and rethrow the error\n\
closeSubscription(this);\n\
throw e;\n\
}\n\
\n\
// Cleanup if sink is closed\n\
if (result && result.done)\n\
closeSubscription(this);\n\
\n\
return result;\n\
}\n\
\n\
throw(value) {\n\
\n\
let observer = this._observer;\n\
\n\
// If the stream is closed, throw the error to the caller\n\
if (!observer)\n\
throw value;\n\
\n\
this._observer = undefined;\n\
\n\
try {\n\
\n\
// If the sink does not support \"throw\", then throw the error to the caller\n\
if (!(\"throw\" in observer))\n\
throw value;\n\
\n\
return observer.throw(value);\n\
\n\
} finally {\n\
\n\
cancelSubscription(this);\n\
}\n\
}\n\
\n\
return(value) {\n\
\n\
let observer = this._observer;\n\
\n\
// If the stream is closed, then return a done result\n\
if (!observer)\n\
return { value, done: true };\n\
\n\
this._observer = undefined;\n\
\n\
try {\n\
\n\
// If the sink does not support \"return\", then return a done result\n\
if (!(\"return\" in observer))\n\
return { value, done: true };\n\
\n\
return observer.return(value);\n\
\n\
} finally {\n\
\n\
cancelSubscription(this);\n\
}\n\
}\n\
}\n\
\n\
class Observable {\n\
\n\
constructor(subscriber) {\n\
\n\
// The stream subscriber must be a function\n\
if (typeof subscriber !== \"function\")\n\
throw new TypeError(\"Observable initializer must be a function\");\n\
\n\
this._subscriber = subscriber;\n\
}\n\
\n\
subscribe(observer) {\n\
\n\
// The sink must be an object\n\
if (Object(observer) !== observer)\n\
throw new TypeError(\"Observer must be an object\");\n\
\n\
// Wrap the observer in order to maintain observation invariants\n\
observer = new SubscriptionObserver(observer);\n\
\n\
let unsubscribed = false,\n\
subscription;\n\
\n\
enqueueJob(_=> {\n\
\n\
if (unsubscribed)\n\
return;\n\
\n\
try {\n\
\n\
// Call the subscriber function\n\
subscription = this._subscriber.call(undefined, observer);\n\
\n\
if (!hasUnsubscribe(subscription)) {\n\
\n\
let unsubscribe = typeof subscription === \"function\" ?\n\
subscription :\n\
(_=> { observer.return() });\n\
\n\
subscription = { unsubscribe };\n\
}\n\
\n\
} catch (e) {\n\
\n\
// If an error occurs during startup, then attempt to send the error\n\
// to the observer\n\
observer.throw(e);\n\
}\n\
\n\
observer._subscription = subscription;\n\
\n\
// If the stream is already finished, then perform cleanup\n\
if (!observer._observer)\n\
cancelSubscription(observer);\n\
});\n\
\n\
return {\n\
\n\
unsubscribe() {\n\
\n\
if (unsubscribed)\n\
return;\n\
\n\
unsubscribed = true;\n\
\n\
if (subscription)\n\
subscription.unsubscribe();\n\
}\n\
};\n\
}\n\
\n\
[Symbol.observable]() { return this }\n\
\n\
forEach(fn, thisArg = undefined) {\n\
\n\
return new Promise((resolve, reject) => {\n\
\n\
if (typeof fn !== \"function\")\n\
throw new TypeError(fn + \" is not a function\");\n\
\n\
this.subscribe({\n\
\n\
next(value) { fn.call(thisArg, value) },\n\
throw(value) { reject(value) },\n\
return(value) { resolve(undefined) },\n\
});\n\
});\n\
}\n\
\n\
map(fn, thisArg = undefined) {\n\
\n\
if (typeof fn !== \"function\")\n\
throw new TypeError(fn + \" is not a function\");\n\
\n\
return new this.constructor[Symbol.species](sink => this.subscribe({\n\
\n\
next(value) {\n\
\n\
try { value = fn.call(thisArg, value) }\n\
catch (e) { return sink.throw(e) }\n\
\n\
return sink.next(value);\n\
},\n\
\n\
throw(value) { return sink.throw(value) },\n\
return(value) { return sink.return(value) },\n\
}));\n\
}\n\
\n\
filter(fn, thisArg = undefined) {\n\
\n\
if (typeof fn !== \"function\")\n\
throw new TypeError(fn + \" is not a function\");\n\
\n\
return new this.constructor[Symbol.species](sink => this.subscribe({\n\
\n\
next(value) {\n\
\n\
try { if (!fn.call(thisArg, value)) return { done: false } }\n\
catch (e) { return sink.throw(e) }\n\
\n\
return sink.next(value);\n\
},\n\
\n\
throw(value) { return sink.throw(value) },\n\
return(value) { return sink.return(value) },\n\
}));\n\
}\n\
\n\
static from(x) {\n\
\n\
let C = typeof this === \"function\" ? this : Observable;\n\
\n\
if (x == null)\n\
throw new TypeError(x + \" is not an object\");\n\
\n\
let method = x[Symbol.observable];\n\
\n\
if (method != null) {\n\
\n\
if (typeof method !== \"function\")\n\
throw new TypeError(method + \" is not a function\");\n\
\n\
let observable = method.call(x);\n\
\n\
if (Object(observable) !== observable)\n\
throw new TypeError(observable + \" is not an object\");\n\
\n\
if (observable.constructor === C)\n\
return observable;\n\
\n\
return new C(sink => observable.subscribe(sink));\n\
}\n\
\n\
method = x[Symbol.iterator];\n\
\n\
if (typeof method !== \"function\")\n\
throw new TypeError(method + \" is not a function\");\n\
\n\
return new C(sink => {\n\
\n\
for (let item of method.call(x)) {\n\
\n\
let result = sink.next(item);\n\
\n\
if (result && result.done)\n\
return;\n\
}\n\
\n\
sink.return();\n\
});\n\
}\n\
\n\
static of(...items) {\n\
\n\
let C = typeof this === \"function\" ? this : Observable;\n\
\n\
return new C(sink => {\n\
\n\
for (let item of items) {\n\
\n\
let result = sink.next(item);\n\
\n\
if (result && result.done)\n\
return;\n\
}\n\
\n\
sink.return();\n\
});\n\
}\n\
\n\
static get [Symbol.species]() { return this }\n\
}\n\
\n\
if (!_esdown.global.Observable)\n\
_esdown.global.Observable = Observable;\n\
";
exports.Runtime = Runtime;
}).call(this, _M17);
(function(exports) {
var NODE_SCHEME = /^node:/i,
URI_SCHEME = /^[a-z]+:/i;
function isLegacyScheme(spec) {
return NODE_SCHEME.test(spec);
}
function removeScheme(uri) {
return uri.replace(URI_SCHEME, "");
}
function hasScheme(uri) {
return URI_SCHEME.test(uri);
}
exports.isLegacyScheme = isLegacyScheme;
exports.removeScheme = removeScheme;
exports.hasScheme = hasScheme;
}).call(this, _M16);
(function(exports) {
var parse = _M9.parse, AST = _M9.AST;
var isLegacyScheme = _M16.isLegacyScheme, removeScheme = _M16.removeScheme;
var NODE_SCHEME = /^node:/i,
URI_SCHEME = /^[a-z]+:/i;
var RESERVED_WORD = new RegExp("^(?:" +
"break|case|catch|class|const|continue|debugger|default|delete|do|" +
"else|enum|export|extends|false|finally|for|function|if|import|in|" +
"instanceof|new|null|return|super|switch|this|throw|true|try|typeof|" +
"var|void|while|with|implements|private|public|interface|package|let|" +
"protected|static|yield" +
")$");
function countNewlines(text) {
var m = text.match(/\r\n?|\n/g);
return m ? m.length : 0;
}
function preserveNewlines(text, height) {
var n = countNewlines(text);
if (height > 0 && n < height)
text += "\n".repeat(height - n);
return text;
}
function isAsyncType(type) {
return type === "async" || type === "async-generator";
}
function isGeneratorType(type) {
return type === "generator" || type === "async-generator";
}
var PatternTreeNode = _esdown.class(function(__) { var PatternTreeNode;
__({ constructor: PatternTreeNode = function(name, init, skip) {
this.name = name;
this.initializer = init;
this.children = [];
this.target = "";
this.skip = skip | 0;
this.array = false;
this.rest = false;
}});
});
var RootNode = _esdown.class(function(__) { var RootNode;
__({ constructor: RootNode = function(root, end) {
this.type = "Root";
this.start = 0;
this.end = end;
this.root = root;
}});
});
RootNode.prototype = AST.Node.prototype;
function collapseScopes(parseResult) {
var names = Object.create(null);
visit(parseResult.scopeTree, null);
function makeSuffix(name) {
var count = names[name] | 0;
names[name] = count + 1;
return "$" + count;
}
function fail(msg, node) {
throw parseResult.createSyntaxError("[esdown] " + msg, node);
}
function visit(scope, forScope) {
switch (scope.type) {
case "block":
rename(scope);
break;
case "for":
rename(scope);
forScope = scope;
break;
case "function":
if (forScope) {
var set$0 = Object.create(null);
forScope.free.forEach(function(r) { return set$0[r.value] = 1; });
scope.free.forEach(function(r) {
if (set$0[r.value] !== 1)
fail("Closure capturing per-iteration bindings", r);
});
forScope = null;
}
break;
}
scope.children.forEach(function(c) { return visit(c, forScope); });
}
function rename(node) {
/*
TODO: Throw a compile-time error if a lexical name is referenced in the same
function (not a nested closure) before the binding is initialized. This won't
catch all potential TDZ issues but will help stop some obvious bugs.
*/
var varParent = node.parent.type === "var";
Object.keys(node.names).forEach(function(name) {
var record = node.names[name],
suffix = "";
if (!varParent)
suffix = makeSuffix(name);
record.declarations.forEach(function(decl) { return decl.suffix = suffix; });
record.references.forEach(function(ref) { return ref.suffix = suffix; });
});
}
}
var Replacer = _esdown.class(function(__) { var Replacer; __({ constructor: Replacer = function() {} });
__({ replace: function(input, options) { var __this = this; if (options === void 0) options = {};
this.asi = {};
this.parseResult = parse(input, {
module: options.module,
addParentLinks: true,
resolveScopes: true,
onASI: function(token) {
if (token.type !== "}" && token.type !== "EOF")
__this.asi[token.start] = true;
return true;
}
});
var root = this.parseResult.ast;
collapseScopes(this.parseResult);
this.input = input;
this.exports = {};
this.imports = {};
this.dependencies = [];
this.isStrict = false;
this.uid = 0;
var visit = function(node) {
node.text = null;
// Call pre-order traversal method
if (__this[node.type + "Begin"])
__this[node.type + "Begin"](node);
var strict = __this.isStrict;
// Set the strictness for implicitly strict nodes
switch (node.type) {
case "Module":
case "ClassDeclaration":
case "ClassExpresion":
__this.isStrict = true;
}
// Perform a depth-first traversal
node.children().forEach(visit);
// Restore strictness
__this.isStrict = strict;
var text = null;
// Call replacer
if (__this[node.type])
text = __this[node.type](node);
if (text === null || text === void 0)
text = __this.stringify(node);
return node.text = __this.syncNewlines(node.start, node.end, text);
};
var output = visit(new RootNode(root, input.length)),
head = "";
this.dependencies.forEach(function(dep) {
if (head) head += ", ";
else head = "var ";
var url = dep.url,
legacyFlag = dep.legacy ? ", 1" : "";
head += "" + (__this.imports[url]) + " = __load(" + (JSON.stringify(dep.url)) + "" + (legacyFlag) + ")";
});
if (head)
head += "; ";
output = head + output;
var exports = Object.keys(this.exports);
if (exports.length > 0) {
output += "\n";
output += exports.map(function(k) { return "exports." + (k) + " = " + (__this.exports[k]) + ";"; }).join("\n");
output += "\n";
}
return output;
},
DoWhileStatement: function(node) {
var text = this.stringify(node);
if (text.slice(-1) !== ";")
return text + ";";
},
ForOfStatement: function(node) {
var iter = this.addTempVar(node, null, true),
iterResult = this.addTempVar(node, null, true),
context = this.parentFunction(node),
decl = "",
binding,
head;
if (node.async) {
head = "for (var " + (iter) + " = _esdown.asyncIter(" + (node.right.text) + "), " + (iterResult) + "; ";
head += "" + (iterResult) + " = " + (this.awaitYield(context, iter + ".next()")) + ", ";
} else {
head = "for (var " + (iter) + " = _esdown.iter(" + (node.right.text) + "), " + (iterResult) + "; ";
head += "" + (iterResult) + " = " + (iter) + ".next(), ";
}
head += "!" + (iterResult) + ".done;";
head = this.syncNewlines(node.left.start, node.right.end, head);
head += this.input.slice(node.right.end, node.body.start);
if (node.left.type === "VariableDeclaration") {
decl = "var ";
binding = node.left.declarations[0].pattern;
} else {
binding = this.unwrapParens(node.left);
}
var body = node.body.text;
// Remove braces from block bodies
if (node.body.type === "Block") body = this.removeBraces(body);
else body += " ";
var assign = this.isPattern(binding) ?
this.translatePattern(binding, "" + (iterResult) + ".value").join(", ") :
"" + (binding.text) + " = " + (iterResult) + ".value";
var out = "" + (head) + "{ " + (decl) + "" + (assign) + "; " + (body) + "}";
/*
For-of loops are implicitly wrapped with try-finally, where the "return"
is called upon the iterator (if it has such a method) when evaulation leaves
the loop body. For performance reasons, and because engines have not
implemented "return" yet, we avoid this wrapper.
out = `try { ${ out } } finally { ` +
`if (${ iterResult } && !${ iterResult }.done && "return" in ${ iter }) ` +
`${ iter }.return(); }`;
*/
return out;
},
ExpressionStatement: function(node) {
if (this.asi[node.start]) {
var text$0 = this.stringify(node);
switch (text$0.charAt(0)) {
case "(":
case "[":
text$0 = ";" + text$0;
break;
}
return text$0;
}
},
Module: function(node) {
// NOTE: Strict directive is included with module wrapper
var inserted = [],
temps = this.tempVars(node);
if (node.lexicalVars)
inserted.push(this.lexicalVarNames(node));
if (temps)
inserted.push(temps);
if (inserted.length > 0)
return inserted.join(" ") + " " + this.stringify(node);
},
Script: function(node) {
return this.Module(node);
},
FunctionBody: function(node) {
var insert = this.functionInsert(node.parent);
if (insert)
return "{ " + insert + " " + this.removeBraces(this.stringify(node)) + "}";
},
FormalParameter: function(node) {
if (this.isPattern(node.pattern))
return this.addTempVar(node, null, true);
return node.pattern.text;
},
RestParameter: function(node) {
node.parent.createRestBinding = true;
var p = node.parent.params;
if (p.length > 1) {
var prev$0 = p[p.length - 2];
node.start = prev$0.end;
}
return "";
},
ComputedPropertyName: function(node) {
search:
for (var p$0 = node.parent; p$0; p$0 = p$0.parent) {
switch (p$0.type) {
case "ClassBody":
case "ObjectLiteral":
p$0.hasComputed = true;
break search;
}
}
return "_";
},
ObjectLiteral: function(node) {
if (node.hasComputed) {
var computed$0 = false;
node.properties.forEach(function(c, index) {
if (computed$0)
c.text = " }, { " + c.text;
computed$0 = c.name.type === "ComputedPropertyName";
if (computed$0)
c.text = "}, " + (c.name.expression.text) + ", { " + (c.text) + "";
});
return "_esdown.computed(" + this.stringify(node) + ")";
}
},
ArrayLiteral: function(node) {
if (node.hasSpread)
return "(" + this.spreadList(node.elements, true) + ")";
},
MethodDefinition: function(node) {
var text;
switch (node.kind) {
case "":
case "constructor":
text = "function(" +
this.joinList(node.params) + ") " +
node.body.text;
break;
case "async":
case "async-generator":
text = this.asyncFunction(node);
break;
case "generator":
text = "function*(" +
this.joinList(node.params) + ") " +
node.body.text;
break;
}
if (text !== void 0)
return node.name.text + ": " + text;
},
PropertyDefinition: function(node) {
if (node.expression === null) {
var rawName$0 = this.input.slice(node.name.start, node.name.end);
return rawName$0 + ": " + node.name.text;
}
},
VariableDeclaration: function(node) {
return this.stringify(node).replace(/^(let|const)/, "var");
},
ImportDeclaration: function(node) {
var moduleSpec = this.modulePath(node.from),
imports = node.imports,
out = this.importVars(imports, moduleSpec);
if (imports && imports.type === "DefaultImport" && imports.imports)
out += " " + this.importVars(imports.imports, moduleSpec);
return out;
},
importVars: function(imports, moduleSpec) {
if (!imports)
return "";
switch (imports.type) {
case "NamespaceImport":
return "var " + imports.identifier.text + " = " + moduleSpec + ";";
case "DefaultImport":
return "var " + imports.identifier.text + " = " + moduleSpec + "['default'];";
}
var list = [];
if (imports.specifiers) {
imports.specifiers.forEach(function(spec) {
var imported = spec.imported,
local = spec.local || imported;
list.push({
start: spec.start,
end: spec.end,
text: local.text + " = " + moduleSpec + "." + imported.text
});
});
}
if (list.length === 0)
return "";
return "var " + this.joinList(list) + ";";
},
ExportDeclaration: function(node) { var __this = this;
var target = node.declaration,
exports = this.exports,
ident;
if (target.type === "VariableDeclaration") {
target.declarations.forEach(function(decl) {
if (__this.isPattern(decl.pattern)) {
decl.pattern.patternTargets.forEach(function(x) { return exports[x] = x; });
} else {
ident = decl.pattern.text;
exports[ident] = ident;
}
});
} else {
ident = target.identifier.text;
exports[ident] = ident;
}
return target.text;
},
ExportNameList: function(node) { var __this = this;
var from = node.from,
fromPath = from ? this.modulePath(from) : "";
node.specifiers.forEach(function(spec) {
var local = spec.local.text,
exported = spec.exported ? spec.exported.text : local;
__this.exports[exported] = from ?
fromPath + "." + local :
local;
});
return "";
},
ExportDefaultFrom: function(node) {
var from = node.from,
fromPath = from ? this.modulePath(from) : "";
this.exports[node.identifier.text] = fromPath + "['default']";
return "";
},
ExportNamespace: function(node) {
var from = node.from,
fromPath = from ? this.modulePath(from) : "";
if (from && node.identifier) {
this.exports[node.identifier.text] = fromPath;
return "";
}
return "Object.keys(" + fromPath + ").forEach(function(k) { exports[k] = " + fromPath + "[k]; });";
},
ExportDefault: function(node) {
switch (node.binding.type) {
case "ClassDeclaration":
case "FunctionDeclaration":
this.exports["default"] = node.binding.identifier.text;
return node.binding.text;
}
return "exports[\"default\"] = " + (node.binding.text) + ";";
},
CallExpression: function(node) {
var callee = node.callee,
args = node.arguments,
spread = null,
calleeText,
argText;
if (callee.type === "SuperKeyword")
throw new Error("Super call not supported");
if (node.hasSpread)
spread = this.spreadList(args, false);
if (node.injectThisArg) {
argText = node.injectThisArg;
if (spread)
argText = argText + ", " + spread;
else if (args.length > 0)
argText = argText + ", " + this.joinList(args);
return callee.text + "." + (spread ? "apply" : "call") + "(" + argText + ")";
}
if (spread) {
argText = "void 0";
if (node.callee.type === "MemberExpression") {
argText = this.addTempVar(node);
callee.object.text = "(" + (argText) + " = " + (callee.object.text) + ")";
callee.text = this.MemberExpression(callee) || this.stringify(callee);
}
return callee.text + ".apply(" + argText + ", " + spread + ")";
}
},
SpreadExpression: function(node) {
node.parent.hasSpread = true;
},
SuperKeyword: function(node) {
var proto = "__.super",
p = node.parent,
elem = p;
while (elem && elem.type !== "MethodDefinition")
elem = elem.parent;
if (elem && elem.static)
proto = "__.csuper";
if (p.type !== "CallExpression") {
// super.foo...
p.isSuperLookup = true;
var pp$0 = this.parenParent(p);
// super.foo(args);
if (pp$0[0].type === "CallExpression" && pp$0[0].callee === pp$0[1])
pp$0[0].injectThisArg = "this";
}
return proto;
},
MemberExpression: function(node) {
if (node.isSuperLookup) {
var prop$0 = node.property.text;
prop$0 = node.computed ?
"[" + prop$0 + "]" :
"." + prop$0;
return node.object.text + prop$0;
}
// TODO: What about super.@x?
if (node.property.type === "AtName")
return this.privateReference(node, node.object.text, node.property.text);
},
BindExpression: function(node) {
var left = node.left ? node.left.text : null,
temp = this.addTempVar(node),
bindee;
if (!left) {
var right$0 = this.unwrapParens(node.right);
bindee = "((" + (temp) + " = " + (right$0.object.text) + ")." + (right$0.property.text) + ")";
} else {
bindee = "(" + (temp) + " = " + (left) + ", " + (node.right.text) + ")";
}
if (node.parent.type === "CallExpression" &&
node.parent.callee === node) {
node.parent.injectThisArg = temp;
return bindee;
}
return "" + (bindee) + ".bind(" + (temp) + ")";
},
ArrowFunction: function(node) {
var body = node.body.text;
if (node.body.type !== "FunctionBody") {
var insert$0 = this.functionInsert(node);
if (insert$0)
insert$0 += " ";
body = "{ " + insert$0 + "return " + body + "; }";
}
var text = node.kind === "async" ?
this.asyncFunction(node, body) :
"function(" + this.joinList(node.params) + ") " + body;
return this.wrapFunctionExpression(text, node);
},
ThisExpression: function(node) {
return this.renameLexicalVar(node, "this");
},
Identifier: function(node) {
if (node.value === "arguments" && node.context === "variable")
return this.renameLexicalVar(node, "arguments");
if (node.suffix)
return this.input.slice(node.start, node.end) + node.suffix;
},
UnaryExpression: function(node) {
if (node.operator === "delete" && node.overrideDelete)
return "!void " + node.expression.text;
if (node.operator === "await")
return this.awaitYield(this.parentFunction(node), node.expression.text);
},
YieldExpression: function(node) {
// V8 circa Node 0.11.x does not support yield without expression
if (!node.expression)
return "yield void 0";
// V8 circa Node 0.11.x does not access Symbol.iterator correctly
if (node.delegate) {
var fn$0 = this.parentFunction(node),
method$0 = isAsyncType(fn$0.kind) ? "asyncIter" : "iter";
node.expression.text = "_esdown." + (method$0) + "(" + (node.expression.text) + ")";
}
},
FunctionDeclaration: function(node) {
if (isAsyncType(node.kind))
return this.asyncFunction(node);
},
FunctionExpression: function(node) {
return this.FunctionDeclaration(node);
},
ClassDeclaration: function(node) {
if (node.base)
this.fail("Subclassing not supported", node.base);
return "var " + node.identifier.text + " = _esdown.class(" +
(node.base ? (node.base.text + ", ") : "") +
"function(__) {" +
this.strictDirective() +
this.removeBraces(node.body.text) + " });";
},
ClassExpression: function(node) {
var before = "",
after = "";
if (node.base)
this.fail("Subclassing not supported", node.base);
if (node.identifier) {
before = "function() { var " + node.identifier.text + " = ";
after = "; return " + node.identifier.text + "; }()";
}
return "(" + before +
"_esdown.class(" +
(node.base ? (node.base.text + ", ") : "") +
"function(__) {" +
this.strictDirective() +
this.removeBraces(node.body.text) + " })" +
after + ")";
},
PrivateDeclaration: function(node) {
var init = node.initializer;
if (node.static)
return "__private_ctor." + node.name.text + " = " + (init ? init.text : "void 0") + ";";
if (init) {
node.parent.privateNames[node.name.text].init = true;
return "function __init_" + node.name.text + "() { return " + init.text + "; }";
}
return "";
},
AtName: function(node) {
var name = node.value.slice(1),
parent = node.parent;
switch (parent.type) {
case "MemberExpression":
if (parent.property === node)
return name;
break;
case "PrivateDeclaration":
case "MethodDefinition":
case "PropertyDefinition":
return name;
}
},
ClassBodyBegin: function(node) { var __this = this;
var ctor = null;
node.elements.forEach(function(e) {
switch (e.type) {
case "MethodDefinition":
if (e.name.type === "AtName")
__this.addPrivateName(node, e.name.value.slice(1), true, e.static);
if (e.kind === "constructor")
ctor = e;
break;
case "PrivateDeclaration":
if (e.name.type === "AtName")
__this.addPrivateName(node, e.name.value.slice(1), false, e.static);
break;
}
});
if (ctor && node.privateNames)
ctor.initPrivate = true;
},
ClassBody: function(node) {
var classIdent = node.parent.identifier,
hasBase = !!node.parent.base,
elems = node.elements,
hasCtor = false,
ctorName = classIdent ? classIdent.value : "__ctor",
header = [],
footer = [];
elems.reduce(function(prev, e, index) {
if (e.type !== "MethodDefinition")
return "";
var text = e.text,
fn = "__",
target = "";
if (e.name.type === "AtName")
target = e.static ? "__private_ctor" : "__private_proto";
else if (e.static)
fn += ".static";
if (e.static)
text = text.replace(/^static\s*/, "");
if (e.kind === "constructor") {
hasCtor = true;
// Give the constructor function a name so that the class function's
// name property will be correct and capture the constructor.
text = text.replace(/:\s*function/, ": " + ctorName + " = function");
}
var prefix = fn + "(" + (target ? target + ", " : "");
if (e.name.type === "ComputedPropertyName") {
e.text = prefix + "_esdown.computed({}, " + e.name.expression.text + ", { " + text + " }));";
prefix = "";
} else if (prefix === prev) {
var p$1 = elems[index - 1];
p$1.text = p$1.text.replace(/\}\);$/, ",");
e.text = text + "});"
} else {
e.text = prefix + "{ " + text + "});";
}
return prefix;
}, "");
header.push("var " + ctorName + ";");
if (node.privateNames) {
header.push(this.privateInit(node));
footer.push("__private_static" + node.privateID + ".set(" + ctorName + ", __private_ctor);");
}
// Add a default constructor if none was provided
if (!hasCtor) {
var ctorBody$0 = "";
if (hasBase)
ctorBody$0 = "__.csuper.apply(this, arguments);";
if (node.privateNames) {
if (ctorBody$0) ctorBody$0 = " " + ctorBody$0;
ctorBody$0 += "__initPrivate(this);";
}
if (ctorBody$0)
ctorBody$0 = " " + ctorBody$0 + " ";
var ctor$0 = ctorName + " = function() {" + ctorBody$0 + "}";
header.push("__({ constructor: " + ctor$0 + " });");
}
var text = this.stringify(node);
if (header.length > 0)
text = "{ " + header.join(" ") + text.slice(1);
if (footer.length > 0)
text = text.slice(1, -1) + " " + footer.join(" ") + " }";
return text;
},
TaggedTemplateExpression: function(node) {
return "(" + this.stringify(node) + ")";
},
TemplateExpression: function(node) { var __this = this;
var lit = node.literals,
sub = node.substitutions,
out = "";
if (node.parent.type === "TaggedTemplateExpression") {
out = "(_esdown.callSite(" +
"[" + lit.map(function(x) { return __this.rawToString(x.raw); }).join(", ") + "]";
// Only output the raw array if it is different from the cooked array
for (var i$0 = 0; i$0 < lit.length; ++i$0) {
if (lit[i$0].raw !== lit[i$0].value) {
out += ", [" + lit.map(function(x) { return JSON.stringify(x.raw); }).join(", ") + "]";
break;
}
}
out += ")";
if (sub.length > 0)
out += ", " + sub.map(function(x) { return x.text; }).join(", ");
out += ")";
} else {
for (var i$1 = 0; i$1 < lit.length; ++i$1) {
if (i$1 > 0)
out += " + (" + sub[i$1 - 1].text + ") + ";
out += this.rawToString(lit[i$1].raw);
}
}
return out;
},
CatchClause: function(node) {
if (!this.isPattern(node.param))
return null;
var temp = this.addTempVar(node, null, true),
assign = this.translatePattern(node.param, temp).join(", "),
body = this.removeBraces(node.body.text);
return "catch (" + (temp) + ") { let " + (assign) + "; " + (body) + " }";
},
VariableDeclarator: function(node) {
if (!node.initializer || !this.isPattern(node.pattern))
return null;
var list = this.translatePattern(node.pattern, node.initializer.text);
return list.join(", ");
},
AssignmentExpression: function(node) {
if (node.assignWrap)
return node.assignWrap[0] + node.right.text + node.assignWrap[1];
var left = this.unwrapParens(node.left);
if (!this.isPattern(left))
return null;
var temp = this.addTempVar(node),
list = this.translatePattern(left, temp);
list.unshift(temp + " = " + node.right.text);
list.push(temp);
return "(" + list.join(", ") + ")";
},
isPattern: function(node) {
switch (node.type) {
case "ArrayPattern":
case "ObjectPattern":
return true;
}
return false;
},
parenParent: function(node) {
var parent;
for (; parent = node.parent; node = parent)
if (parent.type !== "ParenExpression")
break;
return [parent, node];
},
unwrapParens: function(node) {
while (node && node.type === "ParenExpression")
node = node.expression;
return node;
},
spreadList: function(elems, newArray) {
var list = [],
last = -1;
for (var i$2 = 0; i$2 < elems.length; ++i$2) {
if (elems[i$2].type === "SpreadExpression") {
if (last < i$2 - 1)
list.push({ type: "s", args: this.joinList(elems.slice(last + 1, i$2)) });
list.push({ type: "i", args: elems[i$2].expression.text });
last = i$2;
}
}
if (last < elems.length - 1)
list.push({ type: "s", args: this.joinList(elems.slice(last + 1)) });
var out = "(_esdown.spread()";
for (var i$3 = 0; i$3 < list.length; ++i$3)
out += "." + (list[i$3].type) + "(" + (list[i$3].args) + ")";
out += ".a)";
return out;
},
translatePattern: function(node, base) { var __this = this;
function propGet(name) {
return /^[\.\d'"]/.test(name) ?
"[" + name + "]" :
"." + name;
}
var outer = [],
inner = [],
targets = [];
node.patternTargets = targets;
var visit = function(tree, base) {
var target = tree.target,
dType = tree.array ? "arrayd" : "objd",
str = "",
temp;
var access =
tree.rest ? "" + (base) + ".rest(" + (tree.skip) + ", " + (tree.name) + ")" :
tree.skip ? "" + (base) + ".at(" + (tree.skip) + ", " + (tree.name) + ")" :
tree.name ? base + propGet(tree.name) :
base;
if (tree.initializer) {
temp = __this.addTempVar(node);
inner.push("" + (temp) + " = " + (access) + "");
str = "" + (temp) + " === void 0 ? " + (tree.initializer) + " : " + (temp) + "";
if (!tree.target)
str = "" + (temp) + " = _esdown." + (dType) + "(" + (str) + ")";
inner.push(str);
} else if (tree.target) {
inner.push("" + (access) + "");
} else {
temp = __this.addTempVar(node);
inner.push("" + (temp) + " = _esdown." + (dType) + "(" + (access) + ")");
}
if (tree.target) {
targets.push(target);
outer.push(inner.length === 1 ?
"" + (target) + " = " + (inner[0]) + "" :
"" + (target) + " = (" + (inner.join(", ")) + ")");
inner.length = 0;
}
if (temp)
base = temp;
tree.children.forEach(function(c) { return visit(c, base); });
};
visit(this.createPatternTree(node), base);
return outer;
},
createPatternTree: function(ast, parent) { var __this = this;
if (!parent)
parent = new PatternTreeNode("", null);
var child, init, skip = 1;
switch (ast.type) {
case "ArrayPattern":
parent.array = true;
ast.elements.forEach(function(e, i) {
if (!e) {
++skip;
return;
}
init = e.initializer ? e.initializer.text : "";
child = new PatternTreeNode(String(i), init, skip);
if (e.type === "PatternRestElement")
child.rest = true;
parent.children.push(child);
__this.createPatternTree(e.pattern, child);
skip = 1;
});
break;
case "ObjectPattern":
ast.properties.forEach(function(p) {
init = p.initializer ? p.initializer.text : "";
child = new PatternTreeNode(p.name.text, init);
parent.children.push(child);
__this.createPatternTree(p.pattern || p.name, child);
});
break;
default:
parent.target = ast.text;
break;
}
return parent;
},
asyncFunction: function(node, body) {
var head = "function";
if (node.identifier)
head += " " + node.identifier.text;
var outerParams = node.params.map(function(x, i) {
var p = x.pattern || x.identifier;
return p.type === "Identifier" ? p.value : "__$" + i;
}).join(", ");
var wrapper = node.kind === "async-generator" ? "asyncGen" : "async";
if (body === void 0)
body = node.body.text;
return "" + (head) + "(" + (outerParams) + ") { " +
"return _esdown." + (wrapper) + "(function*(" + (this.joinList(node.params)) + ") " +
"" + (body) + ".apply(this, arguments)); }";
},
findPrivateName: function(node, name) {
for (var n$0 = node; n$0; n$0 = n$0.parent) {
var names$0 = n$0.privateNames;
if (names$0 && names$0[name])
return names$0[name];
}
this.fail("Unable to find private name @" + name, node);
},
addPrivateName: function(scope, ident, isMethod, isStatic) {
var privateID = scope.privateID;
if (privateID === void 0) {
privateID = scope.privateID = this.uid++;
scope.privateNames = Object.create(null);
}
scope.privateNames[ident] = {
ident: ident,
init: null,
method: isMethod,
static: isStatic,
map: "__private" + (isStatic ? "_static" : "") + privateID
};
},
privateReference: function(node, obj, prop) {
var pp = this.parenParent(node),
p = pp[0],
mapName = this.findPrivateName(p, prop).map,
type = "get";
switch (p.type) {
case "CallExpression":
if (p.callee === pp[1]) type = "call";
break;
case "AssignmentExpression":
if (p.left === pp[1]) type = "set";
break;
case "PatternProperty":
case "PatternElement":
// References within assignment patterns are not currently supported
return null;
case "UnaryExpression":
if (p.operator === "delete")
this.fail("Cannot delete private reference", p.expression);
break;
}
var temp;
switch (type) {
case "call":
temp = this.addTempVar(p);
p.injectThisArg = temp;
return "_esdown.getPrivate(" + (temp) + " = " + (obj) + ", " + (mapName) + ", \"" + (prop) + "\")";
case "get":
return "_esdown.getPrivate(" + (obj) + ", " + (mapName) + ", \"" + (prop) + "\")";
case "set":
temp = this.addTempVar(p);
p.assignWrap = [
"(_esdown.setPrivate(" + (obj) + ", " + (mapName) + ", \"" + (prop) + "\", " + (temp) + " = ",
"), " + (temp) + ")"
];
return null;
}
},
privateInit: function(scope) {
var id = scope.privateID;
var instance = Object
.keys(scope.privateNames)
.filter(function(name) {
var entry = scope.privateNames[name];
return !entry.method && !entry.static;
});
return "var __private" + id + " = new WeakMap, " +
"__private_static" + id + " = new WeakMap, " +
"__private_ctor = {}, " +
"__private_proto = {}; " +
"function __initPrivate(__$) { " +
"if (__private" + id + ".has(__$)) " +
"throw new TypeError('Object already initialized'); " +
"var __p; " +
"__private" + id + ".set(__$, __p = Object.create(__private_proto, { " +
instance.map(function(name) { return name + ": { writable: true }"; }).join(", ") +
" })); " +
instance
.filter(function(name) { return scope.privateNames[name].init; })
.map(function(name) { return "__p." + name + " = __init_" + name + "(); "; }).join("") +
"}";
},
rawToString: function(raw) {
raw = raw.replace(/([^\n])?\n/g, function(m, m1) { return m1 === "\\" ? m : (m1 || "") + "\\n\\\n"; });
raw = raw.replace(/([^"])?"/g, function(m, m1) { return m1 === "\\" ? m : (m1 || "") + '\\"'; });
return '"' + raw + '"';
},
isVarScope: function(node) {
switch (node.type) {
case "ArrowFunction":
case "FunctionDeclaration":
case "FunctionExpression":
case "MethodDefinition":
case "Script":
case "Module":
return true;
}
return false;
},
parentFunction: function(node) {
for (var p$2 = node.parent; p$2; p$2 = p$2.parent)
if (this.isVarScope(p$2))
return p$2;
return null;
},
renameLexicalVar: function(node, name) {
var fn = this.parentFunction(node),
varName = name;
if (fn.type === "ArrowFunction") {
while (fn = this.parentFunction(fn)) {
if (fn.type !== "ArrowFunction") {
if (!fn.lexicalVars)
fn.lexicalVars = {};
fn.lexicalVars[name] = varName = "__" + name;
break;
}
}
}
return varName;
},
lexicalVarNames: function(node) {
var names = node.lexicalVars;
if (!names)
return "";
return "var " + Object.keys(names).map(function(key) {
return names[key] + " = " + key;
}).join(", ") + ";";
},
modulePath: function(node) {
return node.type === "StringLiteral" ?
this.identifyModule(node.value) :
this.stringify(node);
},
identifyModule: function(url) {
var legacy = false;
url = url.trim();
if (isLegacyScheme(url)) {
url = removeScheme(url).trim();
legacy = true;
}
if (typeof this.imports[url] !== "string") {
this.imports[url] = "_M" + (this.uid++);
this.dependencies.push({ url: url, legacy: legacy });
}
return this.imports[url];
},
stringify: function(node) {
var offset = node.start,
input = this.input,
text = "";
// Build text from child nodes
node.children().forEach(function(child) {
if (offset < child.start)
text += input.slice(offset, child.start);
text += child.text;
offset = child.end;
});
if (offset < node.end)
text += input.slice(offset, node.end);
return text;
},
restParamVar: function(node) {
var name = node.params[node.params.length - 1].identifier.value,
pos = node.params.length - 1,
temp = this.addTempVar(node, null, true);
return "for (var " + (name) + " = [], " + (temp) + " = " + (pos) + "; " +
"" + (temp) + " < arguments.length; " +
"++" + (temp) + ") " + (name) + ".push(arguments[" + (temp) + "]);";
},
functionInsert: function(node) { var __this = this;
var inserted = [];
if (node.hasYieldInput)
inserted.push("var __yieldin = yield;");
if (node.lexicalVars)
inserted.push(this.lexicalVarNames(node));
if (node.initPrivate)
inserted.push("__initPrivate(this);");
if (node.createRestBinding)
inserted.push(this.restParamVar(node));
node.params.forEach(function(param) {
if (!param.pattern)
return;
var name = param.text;
if (param.initializer)
inserted.push("if (" + (name) + " === void 0) " + (name) + " = " + (param.initializer.text) + ";");
if (__this.isPattern(param.pattern))
inserted.push("var " + __this.translatePattern(param.pattern, name).join(", ") + ";");
});
var temps = this.tempVars(node);
// Add temp var declarations to the top of the insert
if (temps)
inserted.unshift(temps);
return inserted.join(" ");
},
addTempVar: function(node, value, noDeclare) {
var p = this.isVarScope(node) ? node : this.parentFunction(node);
if (!p.tempVars)
p.tempVars = [];
var name = "__$" + p.tempVars.length;
p.tempVars.push({ name: name, value: value, noDeclare: noDeclare });
return name;
},
tempVars: function(node) {
if (!node.tempVars)
return "";
var list = node.tempVars.filter(function(item) { return !item.noDeclare; });
if (list.length === 0)
return "";
return "var " + list.map(function(item) {
var out = item.name;
if (typeof item.value === "string")
out += " = " + item.value;
return out;
}).join(", ") + ";";
},
strictDirective: function() {
return this.isStrict ? "" : ' "use strict";';
},
lineNumber: function(offset) {
return this.parseResult.locate(offset).line;
},
syncNewlines: function(start, end, text) {
var height = this.lineNumber(end - 1) - this.lineNumber(start);
return preserveNewlines(text, height);
},
awaitYield: function(context, text) {
if (context.kind === "async-generator")
text = "{ _esdown_await: (" + (text) + ") }";
return "(yield " + (text) + ")";
},
wrapFunctionExpression: function(text, node) {
for (var p$3 = node.parent; p$3; p$3 = p$3.parent) {
if (this.isVarScope(p$3))
break;
if (p$3.type === "ExpressionStatement") {
if (p$3.start === node.start)
return "(" + text + ")";
break;
}
}
return text;
},
removeBraces: function(text) {
return text.replace(/^\s*\{|\}\s*$/g, "");
},
joinList: function(list) {
var input = this.input,
offset = -1,
text = "";
list.forEach(function(child) {
if (offset >= 0 && offset < child.start)
text += input.slice(offset, child.start);
text += child.text;
offset = child.end;
});
return text;
},
fail: function(msg, node) {
throw this.parseResult.createSyntaxError("[esdown] " + msg, node);
}});
});
exports.Replacer = Replacer;
}).call(this, _M15);
(function(exports) {
var Runtime = _M17.Runtime;
var Replacer = _M15.Replacer;
var SIGNATURE = "/*=esdown=*/";
var WRAP_CALLEE = "(function(fn, deps, name) { " +
"function obj() { return {} } " +
// CommonJS:
"if (typeof exports !== 'undefined') " +
"fn(require, exports, module); " +
// AMD:
"else if (typeof define === 'function' && define.amd) " +
"define(['require', 'exports', 'module'].concat(deps), fn); " +
// DOM global module:
"else if (typeof window !== 'undefined' && name) " +
"fn(obj, window[name] = {}, {}); " +
// Hail Mary:
"else " +
"fn(obj, {}, {}); " +
"})";
var WRAP_HEADER = "function(require, exports, module) { " +
"'use strict'; " +
"function __load(p, l) { " +
"module.__es6 = !l; " +
"var e = require(p); " +
"if (e && e.constructor !== Object) e.default = e; " +
"return e; " +
"} ";
var WRAP_FOOTER = "\n\n}";
function sanitize(text) {
// From node/lib/module.js/Module.prototype._compile
text = text.replace(/^\#\!.*/, '');
// From node/lib/module.js/stripBOM
if (text.charCodeAt(0) === 0xFEFF)
text = text.slice(1);
return text;
}
function wrapRuntimeModules() {
return Object.keys(Runtime).map(function(key) {
return "(function() {\n\n" + Runtime[key] + "\n\n}).call(this);\n\n";
}).join("");
}
function translate(input, options) { if (options === void 0) options = {};
input = sanitize(input);
if (options.runtime)
input = "\n" + wrapRuntimeModules() + input;
// Node modules are wrapped inside of a function expression, which allows
// return statements
if (options.functionContext)
input = "(function(){" + input + "})";
var replacer = options.replacer || new Replacer,
output = replacer.replace(input, { module: options.module });
// Remove function expression wrapper for node-modules
if (options.functionContext)
output = output.slice(12, -2);
if (options.wrap) {
// Doesn't make sense to create a module wrapper for a non-module
if (!options.module)
throw new Error("Cannot wrap a non-module");
output = wrapModule(
output,
replacer.dependencies.map(function(d) { return d.url; }),
options.global);
}
return output;
}
function wrapModule(text, dep, global) {
return SIGNATURE + WRAP_CALLEE + "(" +
WRAP_HEADER + text + WRAP_FOOTER + ", " +
JSON.stringify(dep) + ", " +
JSON.stringify(global || "") +
");";
}
function isWrapped(text) {
return text.indexOf(SIGNATURE) === 0;
}
exports.translate = translate;
exports.wrapModule = wrapModule;
exports.isWrapped = isWrapped;
}).call(this, _M8);
(function(exports) {
var Path = _M3;
var FS = _M2;
var NODE_PATH = typeof process !== "undefined" && process.env["NODE_PATH"] || "",
NOT_PACKAGE = /^(?:\.{0,2}\/|[a-z]+:)/i;
var Module = module.constructor,
packageRoots;
function isFile(path) {
var stat;
try { stat = FS.statSync(path) }
catch (x) {}
return stat && stat.isFile();
}
function isDirectory(path) {
var stat;
try { stat = FS.statSync(path) }
catch (x) {}
return stat && stat.isDirectory();
}
function getFolderEntry(dir) {
var path;
// Look for an ES entry point (default.js)
path = Path.join(dir, "default.js");
if (isFile(path))
return { path: path };
// Look for a legacy entry point (package.json or index.js)
path = Module._findPath("./", [dir]);
if (path)
return { path: path, legacy: true };
return null;
}
function locateModule(path, base) {
if (isPackageSpecifier(path))
return locatePackage(path, base);
if (path.charAt(0) !== "." && path.charAt(0) !== "/")
return { path: path };
path = Path.resolve(base, path);
if (isDirectory(path))
return getFolderEntry(path);
return { path: path };
}
function isPackageSpecifier(spec) {
return !NOT_PACKAGE.test(spec);
}
function locatePackage(name, base) {
if (NOT_PACKAGE.test(name))
throw new Error("Not a package specifier");
var pathInfo;
if (!packageRoots)
packageRoots = NODE_PATH.split(Path.delimiter).map(function(v) { return v.trim(); });
var list = Module._nodeModulePaths(base).concat(packageRoots);
list.some(function(root) {
pathInfo = getFolderEntry(Path.resolve(root, name));
if (pathInfo)
return true;
});
if (!pathInfo)
throw new Error("Package " + (name) + " could not be found.");
return pathInfo;
}
exports.locateModule = locateModule;
exports.isPackageSpecifier = isPackageSpecifier;
exports.locatePackage = locatePackage;
}).call(this, _M14);
(function(exports) {
var FS = _M2;
var REPL = _M11;
var VM = _M12;
var Path = _M3;
var Util = _M13;
var Style = _M4.ConsoleStyle;
var parse = _M9.parse;
var translate = _M8.translate;
var isPackageSpecifier = _M14.isPackageSpecifier, locateModule = _M14.locateModule;
var Module = module.constructor;
function formatSyntaxError(e, filename) {
var msg = e.message,
text = e.sourceText;
if (filename === void 0 && e.filename !== void 0)
filename = e.filename;
if (filename)
msg += "\n " + (filename) + ":" + (e.line) + "";
if (e.lineOffset < text.length) {
var code$0 = "\n\n" +
text.slice(e.lineOffset, e.startOffset) +
Style.bold(Style.red(text.slice(e.startOffset, e.endOffset))) +
text.slice(e.endOffset, text.indexOf("\n", e.endOffset)) +
"\n";
msg += code$0.replace(/\n/g, "\n ");
}
return msg;
}
function addExtension() {
var moduleLoad = Module._load;
Module.prototype.importSync = function(path) {
if (/^node:/.test(path)) {
path = path.slice(5);
this.__es6 = false;
} else {
this.__es6 = true;
}
var e = this.require(path);
if (e && e.constructor !== Object) e.default = e;
return e;
};
Module._load = function(request, parent, isMain) {
if (parent.__es6) {
var loc$0 = locateModule(request, Path.dirname(parent.filename));
request = loc$0.path;
if (loc$0.legacy)
parent.__es6 = false;
}
var m = moduleLoad(request, parent, isMain);
parent.__es6 = false;
return m;
};
// Compile ES6 js files
require.extensions[".js"] = function(module, filename) {
var text, source;
try {
text = source = FS.readFileSync(filename, "utf8");
// Only translate as a module if the source module is requesting
// via import syntax
var m$0 = !!module.parent.__es6;
text = translate(text, { wrap: m$0, module: m$0, functionContext: !m$0 });
} catch (e) {
if (e instanceof SyntaxError)
e = new SyntaxError(formatSyntaxError(e, filename));
throw e;
}
return module._compile(text, filename);
};
}
function runModule(path) {
addExtension();
if (isPackageSpecifier(path))
path = "./" + path;
var loc = locateModule(path, process.cwd());
// "__load" is defined in the module wrapper and ensures that the
// target is loaded as a module
var m = __load(loc.path);
if (m && typeof m.main === "function") {
var result$0 = m.main(process.argv);
Promise.resolve(result$0).then(null, function(x) { return setTimeout(function($) { throw x }, 0); });
}
}
function startREPL() {
// Node 0.10.x pessimistically wraps all input in parens and then
// re-evaluates function expressions as function declarations. Since
// Node is unaware of class declarations, this causes classes to
// always be interpreted as expressions in the REPL.
var removeParens = process.version.startsWith("v0.10.");
addExtension();
console.log("esdown " + (_esdown.version) + " (Node " + (process.version) + ")");
var prompt = ">>> ", contPrompt = "... ";
var repl = REPL.start({
prompt: prompt,
useGlobal: true,
eval: function(input, context, filename, cb) { var __this = this;
var text, result, script, displayErrors = false;
// Remove wrapping parens for function and class declaration forms
if (removeParens && /^\((class|function\*?)\s[\s\S]*?\n\)$/.test(input))
input = input.slice(1, -1);
try {
text = translate(input, { module: false });
} catch (x) {
// Regenerate syntax error to eliminate parser stack
if (x instanceof SyntaxError) {
// Detect multiline input
if (/^(Unexpected end of input|Unexpected token)/.test(x.message)) {
this.bufferedCommand = input + "\n";
this.displayPrompt();
return;
}
x = new SyntaxError(x.message);
}
return cb(x);
}
try {
script = VM.createScript(text, { filename: filename, displayErrors: displayErrors });
result = repl.useGlobal ?
script.runInThisContext({ displayErrors: displayErrors }) :
script.runInContext(context, { displayErrors: displayErrors });
} catch (x) {
return cb(x);
}
if (result instanceof Promise) {
// Without displayPrompt, asynchronously calling the "eval"
// callback results in no text being displayed on the screen.
var token$0 = {};
Promise.race([
result,
new Promise(function(a) { return setTimeout(function($) { return a(token$0); }, 3000); }),
])
.then(function(x) {
if (x === token$0)
return void cb(null, result);
__this.outputStream.write(Style.gray("(async) "));
cb(null, x);
})
.catch(function(err) { return cb(err, null); })
.then(function($) { return __this.displayPrompt(); });
} else {
cb(null, result);
}
}
});
// Override displayPrompt so that ellipses are displayed for
// cross-line continuations
if (typeof repl.displayPrompt === "function" &&
typeof repl._prompt === "string") {
var displayPrompt$0 = repl.displayPrompt;
repl.displayPrompt = function(preserveCursor) {
this._prompt = this.bufferedCommand ? contPrompt : prompt;
return displayPrompt$0.call(this, preserveCursor);
};
}
function parseAction(input, module) {
var text, ast;
try {
ast = parse(input, { module: module }).ast;
text = Util.inspect(ast, { colors: true, depth: 20 });
} catch (x) {
text = x instanceof SyntaxError ?
formatSyntaxError(x, "REPL") :
x.toString();
}
console.log(text);
}
function translateAction(input, module) {
var text;
try {
text = translate(input, { wrap: false, module: true });
} catch (x) {
text = x instanceof SyntaxError ?
formatSyntaxError(x, "REPL") :
x.toString();
}
console.log(text);
}
var commands = {
"help": {
help: "Show REPL commands",
action: function() { var __this = this;
var list = Object.keys(this.commands).sort(),
len = list.reduce(function(n, key) { return Math.max(n, key.length); }, 0);
list.forEach(function(key) {
var help = __this.commands[key].help || "",
pad = " ".repeat(4 + len - key.length);
__this.outputStream.write(key + pad + help + "\n");
});
this.displayPrompt();
}
},
"translate": {
help: "Translate an ES6 script to ES5 and show the result (esdown)",
action: function(input) {
translateAction(input, false);
this.displayPrompt();
}
},
"translateModule": {
help: "Translate an ES6 module to ES5 and show the result (esdown)",
action: function(input) {
translateAction(input, true);
this.displayPrompt();
}
},
"parse": {
help: "Parse a script and show the AST (esdown)",
action: function(input) {
parseAction(input, false);
this.displayPrompt();
}
},
"parseModule": {
help: "Parse a module and show the AST (esdown)",
action: function(input) {
parseAction(input, true);
this.displayPrompt();
}
},
};
if (typeof repl.defineCommand === "function")
Object.keys(commands).forEach(function(key) { return repl.defineCommand(key, commands[key]); });
}
exports.formatSyntaxError = formatSyntaxError;
exports.runModule = runModule;
exports.startREPL = startREPL;
}).call(this, _M6);
(function(exports) {
var Path = _M3;
var readFile = _M5.readFile;
var isPackageSpecifier = _M14.isPackageSpecifier, locateModule = _M14.locateModule;
var translate = _M8.translate, wrapModule = _M8.wrapModule;
var Replacer = _M15.Replacer;
var isLegacyScheme = _M16.isLegacyScheme, removeScheme = _M16.removeScheme, hasScheme = _M16.hasScheme;
var Node = _esdown.class(function(__) { var Node;
__({ constructor: Node = function(path, name) {
this.path = path;
this.name = name;
this.edges = new Set;
this.output = null;
}});
});
var GraphBuilder = _esdown.class(function(__) { var GraphBuilder;
__({ constructor: GraphBuilder = function(root) {
this.nodes = new Map;
this.nextID = 1;
this.root = this.add(root);
},
has: function(key) {
return this.nodes.has(key);
},
add: function(key) {
if (this.nodes.has(key))
return this.nodes.get(key);
var name = "_M" + (this.nextID++),
node = new Node(key, name);
this.nodes.set(key, node);
return node;
},
sort: function(key) { var __this = this; if (key === void 0) key = this.root.path;
var visited = new Set,
list = [];
var visit = function(key) {
if (visited.has(key))
return;
visited.add(key);
var node = __this.nodes.get(key);
node.edges.forEach(visit);
list.push(node);
};
visit(key);
return list;
},
process: function(key, input) { var __this = this;
if (!this.nodes.has(key))
throw new Error("Node not found");
var node = this.nodes.get(key);
if (node.output !== null)
throw new Error("Node already processed");
var replacer = new Replacer,
dir = Path.dirname(node.path);
replacer.identifyModule = function(path) {
// REVISIT: Does not currently allow bundling of legacy modules
path = locateModule(path, dir).path;
node.edges.add(path);
return __this.add(path).name;
};
node.output = translate(input, { replacer: replacer, module: true });
return node;
}});
});
function bundle(rootPath, options) { if (options === void 0) options = {};
rootPath = Path.resolve(rootPath);
var builder = new GraphBuilder(rootPath),
visited = new Set,
pending = 0,
resolver,
allFetched;
allFetched = new Promise(function(resolve, reject) { return resolver = { resolve: resolve, reject: reject }; });
function visit(path) {
// Exit if module has already been processed
if (visited.has(path))
return;
visited.add(path);
pending += 1;
readFile(path, { encoding: "utf8" }).then(function(code) {
var node = builder.process(path, code);
node.edges.forEach(function(path) {
// If we want to optionally limit the scope of the bundle, we
// will need to apply some kind of filter here.
// Do not bundle any files that start with a scheme prefix
if (!hasScheme(path))
visit(path);
});
pending -= 1;
if (pending === 0)
resolver.resolve(null);
}).then(null, function(err) {
if (err instanceof SyntaxError && "sourceText" in err)
err.filename = path;
resolver.reject(err);
});
}
visit(rootPath);
return allFetched.then(function($) {
var nodes = builder.sort(),
dependencies = [],
output = "";
var varList = nodes.map(function(node) {
if (node.output === null) {
var path$0 = node.path,
legacy$0 = "";
if (isLegacyScheme(path$0)) {
path$0 = removeScheme(node.path);
legacy$0 = ", 1";
}
dependencies.push(path$0);
return "" + (node.name) + " = __load(" + (JSON.stringify(path$0)) + "" + (legacy$0) + ")";
}
return "" + (node.name) + " = " + (node.path === rootPath ? "exports" : "{}") + "";
}).join(", ");
if (varList)
output += "var " + varList + ";\n";
nodes.filter(function(n) { return n.output !== null; }).forEach(function(node) {
output +=
"\n(function(exports) {\n\n" +
node.output +
"\n\n}).call(this, " + node.name + ");\n";
});
if (options.runtime)
output = translate("", { runtime: true, module: true }) + "\n\n" + output;
return wrapModule(output, dependencies, options.global);
});
}
exports.bundle = bundle;
}).call(this, _M7);
(function(exports) {
var FS = _M2;
var Path = _M3;
var ConsoleCommand = _M4.ConsoleCommand;
var readFile = _M5.readFile, writeFile = _M5.writeFile;
var runModule = _M6.runModule, startREPL = _M6.startREPL, formatSyntaxError = _M6.formatSyntaxError;
var bundle = _M7.bundle;
var translate = _M8.translate;
function getOutPath(inPath, outPath) {
var stat;
outPath = Path.resolve(process.cwd(), outPath);
try { stat = FS.statSync(outPath); } catch (e) {}
if (stat && stat.isDirectory())
return Path.resolve(outPath, Path.basename(inPath));
return outPath;
}
function main() {
new ConsoleCommand({
execute: function(input) {
process.argv.splice(1, 1);
if (input) runModule(input);
else startREPL();
}
}).add("-", {
params: {
"input": {
short: "i",
positional: true,
required: true
},
"output": {
short: "o",
positional: true,
required: false
},
"global": { short: "g" },
"bundle": { short: "b", flag: true },
"runtime": { short: "r", flag: true },
"nowrap": { flag: true },
},
execute: function(params) {
var promise = null;
if (params.bundle) {
promise = bundle(params.input, {
global: params.global,
runtime: params.runtime
});
} else {
promise = params.input ?
readFile(params.input, { encoding: "utf8" }) :
Promise.resolve("");
promise = promise.then(function(text) {
return translate(text, {
global: params.global,
runtime: params.runtime,
wrap: !params.nowrap,
module: true
});
});
}
promise.then(function(text) {
if (params.output) {
var outPath$0 = getOutPath(params.input, params.output);
return writeFile(outPath$0, text, "utf8");
} else {
process.stdout.write(text + "\n");
}
}).then(null, function(x) {
if (x instanceof SyntaxError) {
var filename$0;
if (!params.bundle)
filename$0 = Path.resolve(params.input);
process.stdout.write("\nSyntax Error: " + (formatSyntaxError(x, filename$0)) + "\n");
return;
}
setTimeout(function($) { throw x }, 0);
});
}
}).run();
}
exports.translate = translate;
exports.bundle = bundle;
exports.parse = _M9.parse;
exports.main = main;
}).call(this, _M1);
}, ["fs","path","repl","vm","util"], "esdown");
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