Kris Kowal kriskowal

## for-defer-of-go.js
const go = {
  [Symbol.iterator]() {
    const funcs = [];
    const defer = func => funcs.push(func);
    let index = 0;
    const flush = () => {
      let func;
      while (func = funcs.pop()) {
        func();
      }

## teleprompter.html
<!doctype html>
<head>
<style>
  * {
    font-family: Helvetica;
    font-size: 180px;
  }
  body {
    padding: 50px;
  }

## timers.js
const {setTimeout, clearTimeout} = globalThis;
const handles = new WeakMap();
globalThis.setTimeout = (callback, ms) => {
  if (typeof callback !== 'function') {
    throw new Error(`This implementation of setTimeout has disabled evaluation behavior for ${typeof callback} callbacks`);
  }
  const token = harden({});
  handles.set(token, setTimeout(callback, ms));
  return token;
};

## stream-with-context.js
const streamWithContext = (context, stream) => ({
  async next(value) {
    return Promise.race([context.cancelled, stream.next(await value)]);
  },
  async return(value) {
    return Promise.race([context.cancelled, stream.return(await value)]);
  },
  async throw(error) {
    return Promise.race([context.cancelled, stream.throw(await error)]);
  },

## interleaving.js

async function avery() {
  await null;
  for (let i = 0; i < 10; i += 1) {
    console.log('await');
    await null;
  }
}

function blake() {

## metered-input.js
// @ts-check

/**
 * @template T
 * @typedef {{
 *   promise: Promise<T>,
 *   resolve: (value:T) => void,
 *   reject: (reason:Error) => void
 * }} Deferred
 */

## gist:f25c81725f0d5c98d41c1e6b7ee8f8fe
00000000: 504b 0304 0a00 0000 0000 3514 5151 849e  PK........5.QQ..
          ^^^^ ^^^^ LOCAL_FILE_HEADER
                    ^^^^ version 10
                         ^^^^ bitFlag
                              ^^^^ compression method
                                   ^^^^ ^^^^ date
00000010: e8b4 0e00 0000 0e00 0000 0900 0000 6865  ..............he
          ^^^^ crc32
               ^^^^ ^^^^ compressed size (14)
                         ^^^^ ^^^^ uncompressed size (14)

## compartment-dependency.js
const dependency = new Compartment({}, {}, {
  resolveHook: (moduleSpecifier, moduleReferrer) =>
    resolve(moduleSpecifier, moduleReferrer),
  importHook: async moduleSpecifier => {
    const moduleLocation = locate(moduleSpecifier);
    const moduleText = await retrieve(moduleLocation);
    return new ModuleStaticRecord(moduleText, moduleLocation);
  },
});
const application = new Compartment({}, {

## compartment-import.js
compartment
.import('./main.js')
.then(({ namespace: main }) => {
  // …
});

## lockdown.js
import 'ses';
lockdown();
let compartment = new Compartment();
compartment.evaluate(code);
	const go = {
	[Symbol.iterator]() {
	const funcs = [];
	const defer = func => funcs.push(func);
	let index = 0;
	const flush = () => {
	let func;
	while (func = funcs.pop()) {
	func();
	}
	<!doctype html>
	<head>
	<style>
	* {
	font-family: Helvetica;
	font-size: 180px;
	}
	body {
	padding: 50px;
	}
	const {setTimeout, clearTimeout} = globalThis;
	const handles = new WeakMap();
	globalThis.setTimeout = (callback, ms) => {
	if (typeof callback !== 'function') {
	throw new Error(`This implementation of setTimeout has disabled evaluation behavior for ${typeof callback} callbacks`);
	}
	const token = harden({});
	handles.set(token, setTimeout(callback, ms));
	return token;
	};

	async function avery() {
	await null;
	for (let i = 0; i < 10; i += 1) {
	console.log('await');
	await null;
	}
	}

	function blake() {
	// @ts-check

	/**
	* @template T
	* @typedef {{
	* promise: Promise<T>,
	* resolve: (value:T) => void,
	* reject: (reason:Error) => void
	* }} Deferred
	*/
	00000000: 504b 0304 0a00 0000 0000 3514 5151 849e PK........5.QQ..
	^^^^ ^^^^ LOCAL_FILE_HEADER
	^^^^ version 10
	^^^^ bitFlag
	^^^^ compression method
	^^^^ ^^^^ date
	00000010: e8b4 0e00 0000 0e00 0000 0900 0000 6865 ..............he
	^^^^ crc32
	^^^^ ^^^^ compressed size (14)
	^^^^ ^^^^ uncompressed size (14)
	const dependency = new Compartment({}, {}, {
	resolveHook: (moduleSpecifier, moduleReferrer) =>
	resolve(moduleSpecifier, moduleReferrer),
	importHook: async moduleSpecifier => {
	const moduleLocation = locate(moduleSpecifier);
	const moduleText = await retrieve(moduleLocation);
	return new ModuleStaticRecord(moduleText, moduleLocation);
	},
	});
	const application = new Compartment({}, {
	compartment
	.import('./main.js')
	.then(({ namespace: main }) => {
	// …
	});
	import 'ses';
	lockdown();
	let compartment = new Compartment();
	compartment.evaluate(code);