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"use strict";

// These are examples how to created PACKED_*_ELEMENTS arrays preinitialized
// in V8, following up on offline discussion at the last MunichJS meetup.

function createPackedViaArrayFrom(length, value) {
  return Array.from.call(null, Array.prototype.map.call({length}, _ => value));
}

function createPackedViaGenerator(length, value) {

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// Micro-benchmark to answer the question in https://twitter.com/thejameskyle/status/905403367949647874

if (typeof console === 'undefined') console = {log:print};

var closuresOriginal = (function() {
  const outer = a => {
    const inner = b => a + b;
    return inner(2);
  };

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let a = Object.assign({}, {x:1, y:2, z:3});

let b = Object.assign({}, a);

console.log("a is", a);
console.log("b is", b);
console.log("a and b have same map:", %HaveSameMap(a, b));

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let a = {x:1, y:2, z:3};

let b = Object.assign({}, a);

console.log("a is", a);
console.log("b is", b);
console.log("a and b have same map:", %HaveSameMap(a, b));

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let a = {x:1, y:2, z:3};

let b = {};
b.x = 1;
b.y = 2;
b.z = 3;

console.log("a is", a);
console.log("b is", b);
console.log("a and b have same map:", %HaveSameMap(a, b));

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const s1 = todo({}, {
  type: 'ADD_TODO',
  id: 1,
  text: "Finish blog post"
});

const s2 = todo(s1, {
  type: 'TOGGLE_TODO',
  id: 1
});

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const todo = (state = {}, action) => {
  switch (action.type) {
    case 'ADD_TODO':
      return {
        id: action.id,
        text: action.text,
        completed: false
      }
    case 'TOGGLE_TODO':
      if (state.id !== action.id) {

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function fibonacci(num){
  var a = 1, b = 0, temp;

  while (num >= 0){
    temp = a;
    a = a + b;
    b = temp;
    --num;
  }

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/////////////////////////////////////////////////////////////////////////////
// Test framework:

// Warmup
for (var i = 0; i < 1000; ++i) test(data);

function time(test, a) {
  let startTime = Date.now();
  // Using F.p.apply here to prevent inlining, so we can really
  // just measure the performance of test stand-alone.

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Converting an array of char codes to a String

There's currently String.fromCharCode and String.fromCodePoint in EcmaScript to convert a (sequence of) character code(s)/code point(s) to a String, but this only works if the input codes are passed as parameters to these String builtins. So a common pattern in JavaScript to construct a String from the bytes in an ArrayBuffer (that was read from a file or fetched from some server) is to either use