made with requirebin
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September 12, 2016 09:02
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requirebin sketch
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var pull = require('pull-stream') | |
var paramap = require('pull-paramap') | |
pull( | |
pull.values([1, 2, 3, 4, 5]), | |
paramap(function (amount, cb) { | |
pull( | |
pull.infinite(Math.random), | |
pull.take(amount), | |
pull.collect(cb) | |
) | |
}), | |
pull.filter(arr => arr.length > 2), | |
pull.drain(arr => console.log(arr)) | |
) |
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setTimeout(function(){ | |
;require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({"pull-paramap":[function(require,module,exports){ | |
module.exports = function (map, width) { | |
var reading = false, abort | |
return function (read) { | |
var i = 0, j = 0, last = 0 | |
var seen = [], started = false, ended = false, _cb, error | |
function drain () { | |
if(_cb) { | |
var cb = _cb | |
if(error) { | |
_cb = null | |
return cb(error) | |
} | |
if(Object.hasOwnProperty.call(seen, j)) { | |
_cb = null | |
var data = seen[j]; delete seen[j]; j++ | |
cb(null, data) | |
if(width) start() | |
} else if(j >= last && ended) { | |
_cb = null | |
cb(true) | |
} | |
} | |
} | |
function start () { | |
started = true | |
if(ended) return drain() | |
if(reading || width && (i - width >= j)) return | |
reading = true | |
read(abort, function (end, data) { | |
reading = false | |
if(end) { | |
last = i; ended = end | |
drain() | |
} else { | |
var k = i++ | |
map(data, function (err, data) { | |
seen[k] = data | |
if(err) error = err | |
drain() | |
}) | |
if(!ended) | |
start() | |
} | |
}) | |
} | |
return function (_abort, cb) { | |
if(_abort) | |
read(ended = abort = _abort, function (err) { | |
if(cb) return cb(err) | |
}) | |
else { | |
_cb = cb | |
if(!started) start() | |
drain() | |
} | |
} | |
} | |
} | |
},{}]},{},[]) | |
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require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){ | |
'use strict' | |
module.exports = function pull (a) { | |
var length = arguments.length | |
if (typeof a === 'function' && a.length === 1) { | |
var args = new Array(length) | |
for(var i = 0; i < length; i++) | |
args[i] = arguments[i] | |
return function (read) { | |
if (args == null) { | |
throw new TypeError("partial sink should only be called once!") | |
} | |
// Grab the reference after the check, because it's always an array now | |
// (engines like that kind of consistency). | |
var ref = args | |
args = null | |
// Prioritize common case of small number of pulls. | |
switch (length) { | |
case 1: return pull(read, ref[0]) | |
case 2: return pull(read, ref[0], ref[1]) | |
case 3: return pull(read, ref[0], ref[1], ref[2]) | |
case 4: return pull(read, ref[0], ref[1], ref[2], ref[3]) | |
default: | |
ref.unshift(read) | |
return pull.apply(null, ref) | |
} | |
} | |
} | |
var read = a | |
if (read && typeof read.source === 'function') { | |
read = read.source | |
} | |
for (var i = 1; i < length; i++) { | |
var s = arguments[i] | |
if (typeof s === 'function') { | |
read = s(read) | |
} else if (s && typeof s === 'object') { | |
s.sink(read) | |
read = s.source | |
} | |
} | |
return read | |
} | |
},{}],2:[function(require,module,exports){ | |
'use strict' | |
var reduce = require('./reduce') | |
module.exports = function collect (cb) { | |
return reduce(function (arr, item) { | |
arr.push(item) | |
return arr | |
}, [], cb) | |
} | |
},{"./reduce":9}],3:[function(require,module,exports){ | |
'use strict' | |
var reduce = require('./reduce') | |
module.exports = function concat (cb) { | |
return reduce(function (a, b) { | |
return a + b | |
}, '', cb) | |
} | |
},{"./reduce":9}],4:[function(require,module,exports){ | |
'use strict' | |
module.exports = function drain (op, done) { | |
var read, abort | |
function sink (_read) { | |
read = _read | |
if(abort) return sink.abort() | |
//this function is much simpler to write if you | |
//just use recursion, but by using a while loop | |
//we do not blow the stack if the stream happens to be sync. | |
;(function next() { | |
var loop = true, cbed = false | |
while(loop) { | |
cbed = false | |
read(null, function (end, data) { | |
cbed = true | |
if(end = end || abort) { | |
loop = false | |
if(done) done(end === true ? null : end) | |
else if(end && end !== true) | |
throw end | |
} | |
else if(op && false === op(data) || abort) { | |
loop = false | |
read(abort || true, done || function () {}) | |
} | |
else if(!loop){ | |
next() | |
} | |
}) | |
if(!cbed) { | |
loop = false | |
return | |
} | |
} | |
})() | |
} | |
sink.abort = function (err, cb) { | |
if('function' == typeof err) | |
cb = err, err = true | |
abort = err || true | |
if(read) return read(abort, cb || function () {}) | |
} | |
return sink | |
} | |
},{}],5:[function(require,module,exports){ | |
'use strict' | |
function id (e) { return e } | |
var prop = require('../util/prop') | |
var drain = require('./drain') | |
module.exports = function find (test, cb) { | |
var ended = false | |
if(!cb) | |
cb = test, test = id | |
else | |
test = prop(test) || id | |
return drain(function (data) { | |
if(test(data)) { | |
ended = true | |
cb(null, data) | |
return false | |
} | |
}, function (err) { | |
if(ended) return //already called back | |
cb(err === true ? null : err, null) | |
}) | |
} | |
},{"../util/prop":29,"./drain":4}],6:[function(require,module,exports){ | |
'use strict' | |
module.exports = { | |
drain: require('./drain'), | |
onEnd: require('./on-end'), | |
log: require('./log'), | |
find: require('./find'), | |
reduce: require('./reduce'), | |
collect: require('./collect'), | |
concat: require('./concat') | |
} | |
},{"./collect":2,"./concat":3,"./drain":4,"./find":5,"./log":7,"./on-end":8,"./reduce":9}],7:[function(require,module,exports){ | |
'use strict' | |
var drain = require('./drain') | |
module.exports = function log (done) { | |
return drain(function (data) { | |
console.log(data) | |
}, done) | |
} | |
},{"./drain":4}],8:[function(require,module,exports){ | |
'use strict' | |
var drain = require('./drain') | |
module.exports = function onEnd (done) { | |
return drain(null, done) | |
} | |
},{"./drain":4}],9:[function(require,module,exports){ | |
'use strict' | |
var drain = require('./drain') | |
module.exports = function reduce (reducer, acc, cb) { | |
return drain(function (data) { | |
acc = reducer(acc, data) | |
}, function (err) { | |
cb(err, acc) | |
}) | |
} | |
},{"./drain":4}],10:[function(require,module,exports){ | |
'use strict' | |
module.exports = function count (max) { | |
var i = 0; max = max || Infinity | |
return function (end, cb) { | |
if(end) return cb && cb(end) | |
if(i > max) | |
return cb(true) | |
cb(null, i++) | |
} | |
} | |
},{}],11:[function(require,module,exports){ | |
'use strict' | |
//a stream that ends immediately. | |
module.exports = function empty () { | |
return function (abort, cb) { | |
cb(true) | |
} | |
} | |
},{}],12:[function(require,module,exports){ | |
'use strict' | |
//a stream that errors immediately. | |
module.exports = function error (err) { | |
return function (abort, cb) { | |
cb(err) | |
} | |
} | |
},{}],13:[function(require,module,exports){ | |
'use strict' | |
module.exports = { | |
keys: require('./keys'), | |
once: require('./once'), | |
values: require('./values'), | |
count: require('./count'), | |
infinite: require('./infinite'), | |
empty: require('./empty'), | |
error: require('./error') | |
} | |
},{"./count":10,"./empty":11,"./error":12,"./infinite":14,"./keys":15,"./once":16,"./values":17}],14:[function(require,module,exports){ | |
'use strict' | |
module.exports = function infinite (generate) { | |
generate = generate || Math.random | |
return function (end, cb) { | |
if(end) return cb && cb(end) | |
return cb(null, generate()) | |
} | |
} | |
},{}],15:[function(require,module,exports){ | |
'use strict' | |
var values = require('./values') | |
module.exports = function (object) { | |
return values(Object.keys(object)) | |
} | |
},{"./values":17}],16:[function(require,module,exports){ | |
'use strict' | |
var abortCb = require('../util/abort-cb') | |
module.exports = function once (value, onAbort) { | |
return function (abort, cb) { | |
if(abort) | |
return abortCb(cb, abort, onAbort) | |
if(value != null) { | |
var _value = value; value = null | |
cb(null, _value) | |
} else | |
cb(true) | |
} | |
} | |
},{"../util/abort-cb":28}],17:[function(require,module,exports){ | |
'use strict' | |
var abortCb = require('../util/abort-cb') | |
module.exports = function values (array, onAbort) { | |
if(!array) | |
return function (abort, cb) { | |
if(abort) return abortCb(cb, abort, onAbort) | |
return cb(true) | |
} | |
if(!Array.isArray(array)) | |
array = Object.keys(array).map(function (k) { | |
return array[k] | |
}) | |
var i = 0 | |
return function (abort, cb) { | |
if(abort) | |
return abortCb(cb, abort, onAbort) | |
if(i >= array.length) | |
cb(true) | |
else | |
cb(null, array[i++]) | |
} | |
} | |
},{"../util/abort-cb":28}],18:[function(require,module,exports){ | |
'use strict' | |
function id (e) { return e } | |
var prop = require('../util/prop') | |
module.exports = function asyncMap (map) { | |
if(!map) return id | |
map = prop(map) | |
var busy = false, abortCb, aborted | |
return function (read) { | |
return function next (abort, cb) { | |
if(aborted) return cb(aborted) | |
if(abort) { | |
aborted = abort | |
if(!busy) read(abort, cb) | |
else read(abort, function () { | |
//if we are still busy, wait for the mapper to complete. | |
if(busy) abortCb = cb | |
else cb(abort) | |
}) | |
} | |
else | |
read(null, function (end, data) { | |
if(end) cb(end) | |
else if(aborted) cb(aborted) | |
else { | |
busy = true | |
map(data, function (err, data) { | |
busy = false | |
if(aborted) { | |
cb(aborted) | |
abortCb(aborted) | |
} | |
else if(err) next (err, cb) | |
else cb(null, data) | |
}) | |
} | |
}) | |
} | |
} | |
} | |
},{"../util/prop":29}],19:[function(require,module,exports){ | |
'use strict' | |
var tester = require('../util/tester') | |
var filter = require('./filter') | |
module.exports = function filterNot (test) { | |
test = tester(test) | |
return filter(function (data) { return !test(data) }) | |
} | |
},{"../util/tester":30,"./filter":20}],20:[function(require,module,exports){ | |
'use strict' | |
var tester = require('../util/tester') | |
module.exports = function filter (test) { | |
//regexp | |
test = tester(test) | |
return function (read) { | |
return function next (end, cb) { | |
var sync, loop = true | |
while(loop) { | |
loop = false | |
sync = true | |
read(end, function (end, data) { | |
if(!end && !test(data)) | |
return sync ? loop = true : next(end, cb) | |
cb(end, data) | |
}) | |
sync = false | |
} | |
} | |
} | |
} | |
},{"../util/tester":30}],21:[function(require,module,exports){ | |
'use strict' | |
var values = require('../sources/values') | |
var once = require('../sources/once') | |
//convert a stream of arrays or streams into just a stream. | |
module.exports = function flatten () { | |
return function (read) { | |
var _read | |
return function (abort, cb) { | |
if (abort) { //abort the current stream, and then stream of streams. | |
_read ? _read(abort, function(err) { | |
read(err || abort, cb) | |
}) : read(abort, cb) | |
} | |
else if(_read) nextChunk() | |
else nextStream() | |
function nextChunk () { | |
_read(null, function (err, data) { | |
if (err === true) nextStream() | |
else if (err) { | |
read(true, function(abortErr) { | |
// TODO: what do we do with the abortErr? | |
cb(err) | |
}) | |
} | |
else cb(null, data) | |
}) | |
} | |
function nextStream () { | |
_read = null | |
read(null, function (end, stream) { | |
if(end) | |
return cb(end) | |
if(Array.isArray(stream) || stream && 'object' === typeof stream) | |
stream = values(stream) | |
else if('function' != typeof stream) | |
stream = once(stream) | |
_read = stream | |
nextChunk() | |
}) | |
} | |
} | |
} | |
} | |
},{"../sources/once":16,"../sources/values":17}],22:[function(require,module,exports){ | |
'use strict' | |
module.exports = { | |
map: require('./map'), | |
asyncMap: require('./async-map'), | |
filter: require('./filter'), | |
filterNot: require('./filter-not'), | |
through: require('./through'), | |
take: require('./take'), | |
unique: require('./unique'), | |
nonUnique: require('./non-unique'), | |
flatten: require('./flatten') | |
} | |
},{"./async-map":18,"./filter":20,"./filter-not":19,"./flatten":21,"./map":23,"./non-unique":24,"./take":25,"./through":26,"./unique":27}],23:[function(require,module,exports){ | |
'use strict' | |
function id (e) { return e } | |
var prop = require('../util/prop') | |
module.exports = function map (mapper) { | |
if(!mapper) return id | |
mapper = prop(mapper) | |
return function (read) { | |
return function (abort, cb) { | |
read(abort, function (end, data) { | |
try { | |
data = !end ? mapper(data) : null | |
} catch (err) { | |
return read(err, function () { | |
return cb(err) | |
}) | |
} | |
cb(end, data) | |
}) | |
} | |
} | |
} | |
},{"../util/prop":29}],24:[function(require,module,exports){ | |
'use strict' | |
var unique = require('./unique') | |
//passes an item through when you see it for the second time. | |
module.exports = function nonUnique (field) { | |
return unique(field, true) | |
} | |
},{"./unique":27}],25:[function(require,module,exports){ | |
'use strict' | |
//read a number of items and then stop. | |
module.exports = function take (test, opts) { | |
opts = opts || {} | |
var last = opts.last || false // whether the first item for which !test(item) should still pass | |
var ended = false | |
if('number' === typeof test) { | |
last = true | |
var n = test; test = function () { | |
return --n | |
} | |
} | |
return function (read) { | |
function terminate (cb) { | |
read(true, function (err) { | |
last = false; cb(err || true) | |
}) | |
} | |
return function (end, cb) { | |
if(ended) last ? terminate(cb) : cb(ended) | |
else if(ended = end) read(ended, cb) | |
else | |
read(null, function (end, data) { | |
if(ended = ended || end) { | |
//last ? terminate(cb) : | |
cb(ended) | |
} | |
else if(!test(data)) { | |
ended = true | |
last ? cb(null, data) : terminate(cb) | |
} | |
else | |
cb(null, data) | |
}) | |
} | |
} | |
} | |
},{}],26:[function(require,module,exports){ | |
'use strict' | |
//a pass through stream that doesn't change the value. | |
module.exports = function through (op, onEnd) { | |
var a = false | |
function once (abort) { | |
if(a || !onEnd) return | |
a = true | |
onEnd(abort === true ? null : abort) | |
} | |
return function (read) { | |
return function (end, cb) { | |
if(end) once(end) | |
return read(end, function (end, data) { | |
if(!end) op && op(data) | |
else once(end) | |
cb(end, data) | |
}) | |
} | |
} | |
} | |
},{}],27:[function(require,module,exports){ | |
'use strict' | |
function id (e) { return e } | |
var prop = require('../util/prop') | |
var filter = require('./filter') | |
//drop items you have already seen. | |
module.exports = function unique (field, invert) { | |
field = prop(field) || id | |
var seen = {} | |
return filter(function (data) { | |
var key = field(data) | |
if(seen[key]) return !!invert //false, by default | |
else seen[key] = true | |
return !invert //true by default | |
}) | |
} | |
},{"../util/prop":29,"./filter":20}],28:[function(require,module,exports){ | |
module.exports = function abortCb(cb, abort, onAbort) { | |
cb(abort) | |
onAbort && onAbort(abort === true ? null: abort) | |
return | |
} | |
},{}],29:[function(require,module,exports){ | |
module.exports = function prop (key) { | |
return key && ( | |
'string' == typeof key | |
? function (data) { return data[key] } | |
: 'object' === typeof key && 'function' === typeof key.exec //regexp | |
? function (data) { var v = key.exec(data); return v && v[0] } | |
: key | |
) | |
} | |
},{}],30:[function(require,module,exports){ | |
var prop = require('./prop') | |
function id (e) { return e } | |
module.exports = function tester (test) { | |
return ( | |
'object' === typeof test && 'function' === typeof test.test //regexp | |
? function (data) { return test.test(data) } | |
: prop (test) || id | |
) | |
} | |
},{"./prop":29}],"pull-stream":[function(require,module,exports){ | |
'use strict' | |
var sources = require('./sources') | |
var sinks = require('./sinks') | |
var throughs = require('./throughs') | |
exports = module.exports = require('./pull') | |
for(var k in sources) | |
exports[k] = sources[k] | |
for(var k in throughs) | |
exports[k] = throughs[k] | |
for(var k in sinks) | |
exports[k] = sinks[k] | |
},{"./pull":1,"./sinks":6,"./sources":13,"./throughs":22}]},{},[]) | |
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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","'use strict'\n\nmodule.exports = function pull (a) {\n  var length = arguments.length\n  if (typeof a === 'function' && a.length === 1) {\n    var args = new Array(length)\n    for(var i = 0; i < length; i++)\n      args[i] = arguments[i]\n    return function (read) {\n      if (args == null) {\n        throw new TypeError(\"partial sink should only be called once!\")\n      }\n\n      // Grab the reference after the check, because it's always an array now\n      // (engines like that kind of consistency).\n      var ref = args\n      args = null\n\n      // Prioritize common case of small number of pulls.\n      switch (length) {\n      case 1: return pull(read, ref[0])\n      case 2: return pull(read, ref[0], ref[1])\n      case 3: return pull(read, ref[0], ref[1], ref[2])\n      case 4: return pull(read, ref[0], ref[1], ref[2], ref[3])\n      default:\n        ref.unshift(read)\n        return pull.apply(null, ref)\n      }\n    }\n  }\n\n  var read = a\n\n  if (read && typeof read.source === 'function') {\n    read = read.source\n  }\n\n  for (var i = 1; i < length; i++) {\n    var s = arguments[i]\n    if (typeof s === 'function') {\n      read = s(read)\n    } else if (s && typeof s === 'object') {\n      s.sink(read)\n      read = s.source\n    }\n  }\n\n  return read\n}\n","'use strict'\n\nvar reduce = require('./reduce')\n\nmodule.exports = function collect (cb) {\n  return reduce(function (arr, item) {\n    arr.push(item)\n    return arr\n  }, [], cb)\n}\n","'use strict'\n\nvar reduce = require('./reduce')\n\nmodule.exports = function concat (cb) {\n  return reduce(function (a, b) {\n    return a + b\n  }, '', cb)\n}\n","'use strict'\n\nmodule.exports = function drain (op, done) {\n  var read, abort\n\n  function sink (_read) {\n    read = _read\n    if(abort) return sink.abort()\n    //this function is much simpler to write if you\n    //just use recursion, but by using a while loop\n    //we do not blow the stack if the stream happens to be sync.\n    ;(function next() {\n        var loop = true, cbed = false\n        while(loop) {\n          cbed = false\n          read(null, function (end, data) {\n            cbed = true\n            if(end = end || abort) {\n              loop = false\n              if(done) done(end === true ? null : end)\n              else if(end && end !== true)\n                throw end\n            }\n            else if(op && false === op(data) || abort) {\n              loop = false\n              read(abort || true, done || function () {})\n            }\n            else if(!loop){\n              next()\n            }\n          })\n          if(!cbed) {\n            loop = false\n            return\n          }\n        }\n      })()\n  }\n\n  sink.abort = function (err, cb) {\n    if('function' == typeof err)\n      cb = err, err = true\n    abort = err || true\n    if(read) return read(abort, cb || function () {})\n  }\n\n  return sink\n}\n","'use strict'\n\nfunction id (e) { return e }\nvar prop = require('../util/prop')\nvar drain = require('./drain')\n\nmodule.exports = function find (test, cb) {\n  var ended = false\n  if(!cb)\n    cb = test, test = id\n  else\n    test = prop(test) || id\n\n  return drain(function (data) {\n    if(test(data)) {\n      ended = true\n      cb(null, data)\n    return false\n    }\n  }, function (err) {\n    if(ended) return //already called back\n    cb(err === true ? null : err, null)\n  })\n}\n\n\n\n\n","'use strict'\n\nmodule.exports = {\n  drain: require('./drain'),\n  onEnd: require('./on-end'),\n  log: require('./log'),\n  find: require('./find'),\n  reduce: require('./reduce'),\n  collect: require('./collect'),\n  concat: require('./concat')\n}\n\n","'use strict'\n\nvar drain = require('./drain')\n\nmodule.exports = function log (done) {\n  return drain(function (data) {\n    console.log(data)\n  }, done)\n}\n","'use strict'\n\nvar drain = require('./drain')\n\nmodule.exports = function onEnd (done) {\n  return drain(null, done)\n}\n","'use strict'\n\nvar drain = require('./drain')\n\nmodule.exports = function reduce (reducer, acc, cb) {\n  return drain(function (data) {\n    acc = reducer(acc, data)\n  }, function (err) {\n    cb(err, acc)\n  })\n}\n\n","'use strict'\n\nmodule.exports = function count (max) {\n  var i = 0; max = max || Infinity\n  return function (end, cb) {\n    if(end) return cb && cb(end)\n    if(i > max)\n      return cb(true)\n    cb(null, i++)\n  }\n}\n\n\n","'use strict'\n//a stream that ends immediately.\nmodule.exports = function empty () {\n  return function (abort, cb) {\n    cb(true)\n  }\n}\n","'use strict'\n//a stream that errors immediately.\nmodule.exports = function error (err) {\n  return function (abort, cb) {\n    cb(err)\n  }\n}\n\n","'use strict'\nmodule.exports = {\n  keys: require('./keys'),\n  once: require('./once'),\n  values: require('./values'),\n  count: require('./count'),\n  infinite: require('./infinite'),\n  empty: require('./empty'),\n  error: require('./error')\n}\n","'use strict'\nmodule.exports = function infinite (generate) {\n  generate = generate || Math.random\n  return function (end, cb) {\n    if(end) return cb && cb(end)\n    return cb(null, generate())\n  }\n}\n\n\n","'use strict'\nvar values = require('./values')\nmodule.exports = function (object) {\n  return values(Object.keys(object))\n}\n\n\n","'use strict'\nvar abortCb = require('../util/abort-cb')\n\nmodule.exports = function once (value, onAbort) {\n  return function (abort, cb) {\n    if(abort)\n      return abortCb(cb, abort, onAbort)\n    if(value != null) {\n      var _value = value; value = null\n      cb(null, _value)\n    } else\n      cb(true)\n  }\n}\n\n\n","'use strict'\nvar abortCb = require('../util/abort-cb')\n\nmodule.exports = function values (array, onAbort) {\n  if(!array)\n    return function (abort, cb) {\n      if(abort) return abortCb(cb, abort, onAbort)\n      return cb(true)\n    }\n  if(!Array.isArray(array))\n    array = Object.keys(array).map(function (k) {\n      return array[k]\n    })\n  var i = 0\n  return function (abort, cb) {\n    if(abort)\n      return abortCb(cb, abort, onAbort)\n    if(i >= array.length)\n      cb(true)\n    else\n      cb(null, array[i++])\n  }\n}\n","'use strict'\n\nfunction id (e) { return e }\nvar prop = require('../util/prop')\n\nmodule.exports = function asyncMap (map) {\n  if(!map) return id\n  map = prop(map)\n  var busy = false, abortCb, aborted\n  return function (read) {\n    return function next (abort, cb) {\n      if(aborted) return cb(aborted)\n      if(abort) {\n        aborted = abort\n        if(!busy) read(abort, cb)\n        else read(abort, function () {\n          //if we are still busy, wait for the mapper to complete.\n          if(busy) abortCb = cb\n          else cb(abort)\n        })\n      }\n      else\n        read(null, function (end, data) {\n          if(end) cb(end)\n          else if(aborted) cb(aborted)\n          else {\n            busy = true\n            map(data, function (err, data) {\n              busy = false\n              if(aborted) {\n                cb(aborted)\n                abortCb(aborted)\n              }\n              else if(err) next (err, cb)\n              else cb(null, data)\n            })\n          }\n        })\n    }\n  }\n}\n\n\n","'use strict'\n\nvar tester = require('../util/tester')\nvar filter = require('./filter')\n\nmodule.exports = function filterNot (test) {\n  test = tester(test)\n  return filter(function (data) { return !test(data) })\n}\n","'use strict'\n\nvar tester = require('../util/tester')\n\nmodule.exports = function filter (test) {\n  //regexp\n  test = tester(test)\n  return function (read) {\n    return function next (end, cb) {\n      var sync, loop = true\n      while(loop) {\n        loop = false\n        sync = true\n        read(end, function (end, data) {\n          if(!end && !test(data))\n            return sync ? loop = true : next(end, cb)\n          cb(end, data)\n        })\n        sync = false\n      }\n    }\n  }\n}\n\n","'use strict'\n\nvar values = require('../sources/values')\nvar once = require('../sources/once')\n\n//convert a stream of arrays or streams into just a stream.\nmodule.exports = function flatten () {\n  return function (read) {\n    var _read\n    return function (abort, cb) {\n      if (abort) { //abort the current stream, and then stream of streams.\n        _read ? _read(abort, function(err) {\n          read(err || abort, cb)\n        }) : read(abort, cb)\n      }\n      else if(_read) nextChunk()\n      else nextStream()\n\n      function nextChunk () {\n        _read(null, function (err, data) {\n          if (err === true) nextStream()\n          else if (err) {\n            read(true, function(abortErr) {\n              // TODO: what do we do with the abortErr?\n              cb(err)\n            })\n          }\n          else cb(null, data)\n        })\n      }\n      function nextStream () {\n        _read = null\n        read(null, function (end, stream) {\n          if(end)\n            return cb(end)\n          if(Array.isArray(stream) || stream && 'object' === typeof stream)\n            stream = values(stream)\n          else if('function' != typeof stream)\n            stream = once(stream)\n          _read = stream\n          nextChunk()\n        })\n      }\n    }\n  }\n}\n\n","'use strict'\n\nmodule.exports = {\n  map: require('./map'),\n  asyncMap: require('./async-map'),\n  filter: require('./filter'),\n  filterNot: require('./filter-not'),\n  through: require('./through'),\n  take: require('./take'),\n  unique: require('./unique'),\n  nonUnique: require('./non-unique'),\n  flatten: require('./flatten')\n}\n\n\n\n","'use strict'\n\nfunction id (e) { return e }\nvar prop = require('../util/prop')\n\nmodule.exports = function map (mapper) {\n  if(!mapper) return id\n  mapper = prop(mapper)\n  return function (read) {\n    return function (abort, cb) {\n      read(abort, function (end, data) {\n        try {\n        data = !end ? mapper(data) : null\n        } catch (err) {\n          return read(err, function () {\n            return cb(err)\n          })\n        }\n        cb(end, data)\n      })\n    }\n  }\n}\n","'use strict'\n\nvar unique = require('./unique')\n\n//passes an item through when you see it for the second time.\nmodule.exports = function nonUnique (field) {\n  return unique(field, true)\n}\n","'use strict'\n\n//read a number of items and then stop.\nmodule.exports = function take (test, opts) {\n  opts = opts || {}\n  var last = opts.last || false // whether the first item for which !test(item) should still pass\n  var ended = false\n  if('number' === typeof test) {\n    last = true\n    var n = test; test = function () {\n      return --n\n    }\n  }\n\n  return function (read) {\n\n    function terminate (cb) {\n      read(true, function (err) {\n        last = false; cb(err || true)\n      })\n    }\n\n    return function (end, cb) {\n      if(ended)            last ? terminate(cb) : cb(ended)\n      else if(ended = end) read(ended, cb)\n      else\n        read(null, function (end, data) {\n          if(ended = ended || end) {\n            //last ? terminate(cb) :\n            cb(ended)\n          }\n          else if(!test(data)) {\n            ended = true\n            last ? cb(null, data) : terminate(cb)\n          }\n          else\n            cb(null, data)\n        })\n    }\n  }\n}\n","'use strict'\n\n//a pass through stream that doesn't change the value.\nmodule.exports = function through (op, onEnd) {\n  var a = false\n\n  function once (abort) {\n    if(a || !onEnd) return\n    a = true\n    onEnd(abort === true ? null : abort)\n  }\n\n  return function (read) {\n    return function (end, cb) {\n      if(end) once(end)\n      return read(end, function (end, data) {\n        if(!end) op && op(data)\n        else once(end)\n        cb(end, data)\n      })\n    }\n  }\n}\n","'use strict'\n\nfunction id (e) { return e }\nvar prop = require('../util/prop')\nvar filter = require('./filter')\n\n//drop items you have already seen.\nmodule.exports = function unique (field, invert) {\n  field = prop(field) || id\n  var seen = {}\n  return filter(function (data) {\n    var key = field(data)\n    if(seen[key]) return !!invert //false, by default\n    else seen[key] = true\n    return !invert //true by default\n  })\n}\n\n","module.exports = function abortCb(cb, abort, onAbort) {\n  cb(abort)\n  onAbort && onAbort(abort === true ? null: abort)\n  return\n}\n\n","module.exports = function prop (key) {\n  return key && (\n    'string' == typeof key\n    ? function (data) { return data[key] }\n    : 'object' === typeof key && 'function' === typeof key.exec //regexp\n    ? function (data) { var v = key.exec(data); return v && v[0] }\n    : key\n  )\n}\n","var prop = require('./prop')\n\nfunction id (e) { return e }\n\nmodule.exports = function tester (test) {\n  return (\n    'object' === typeof test && 'function' === typeof test.test //regexp\n    ? function (data) { return test.test(data) }\n    : prop (test) || id\n  )\n}\n","'use strict'\n\nvar sources  = require('./sources')\nvar sinks    = require('./sinks')\nvar throughs = require('./throughs')\n\nexports = module.exports = require('./pull')\n\nfor(var k in sources)\n  exports[k] = sources[k]\n\nfor(var k in throughs)\n  exports[k] = throughs[k]\n\nfor(var k in sinks)\n  exports[k] = sinks[k]\n\n"]} | |
var pull = require('pull-stream') | |
var paramap = require('pull-paramap') | |
pull( | |
pull.values([1, 2, 3, 4, 5]), | |
paramap(function (amount, cb) { | |
pull( | |
pull.infinite(Math.random), | |
pull.take(amount), | |
pull.collect(cb) | |
) | |
}), | |
pull.filter(arr => arr.length > 2), | |
pull.drain(arr => console.log(arr)) | |
) | |
;}, 0) |
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{ | |
"name": "requirebin-sketch", | |
"version": "1.0.0", | |
"dependencies": { | |
"pull-paramap": "1.1.6", | |
"pull-stream": "3.4.5" | |
} | |
} |
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<main></main> |
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