allenwb

function mapReviver(key, value) {
   if (typeof value != "object") return value;
   switch (value["<kind>"]){
      case undefined: return value;
      case "Map": {
         let newValue = new Map;
         let mapData = value["<mapData>"];
         if (!mapData) return value;
         mapData.forEach(e=>newValue.set(e[0], e[1]));
         return newValue;

allenwb

// 1. No new  syntax for non-TCP functions.
//
// This approach does do include a shorter syntax for regular functions, so if a classic JS function
// is what you want you use the classic long form function expression:

a.some(function (x){
    if (invalid(x))
        return true;
    console.log(x);
});

allenwb

Number.prototype.introspect = function() {
    "use strict";  //.See ES5.1 10.4.3 steps 1-3
    if (typeof this == "object") return Object.prototype.introspect.call(this);//generic object mirror
    return new Float(+this); //Number value mirror
};

allenwb

This is a response to Git 1850768 For some reason the following wouldn't post as a comment

@mranney @piscisaureus

I did some experiments and I don't see any round-tripping issues showing up, at least in FF:

var z= "\ud83d\ude38";   //u+1f638
console.log("z.length: " + z.length); //expect 2

allenwb

//work in progress

// A response to jashkenas's fine proposal for minimalist JavaScript classes.
// and BrendanEich's Rich Corinthian Leather alternative proposal

//intro and justifications still to come

// Harmony always stipulated classes as sugar, so indeed we are keeping current
// JavaScript prototype semantics, and classes would only add a syntactic form
// that can desugar to ES5. This is mostly the same assumption that Jeremy