⚠️ Deviant draft
With iterable objects, would be possible to easy iterate JavaScript default objects (Object.prototype) represented by {}. This change would be useful to avoid unnecessary casts and conversions between data (when trying to filter a {a: 1, b: 2} by value for example).
Examples:
Object.prototype[Symbol.iterator] //ƒ entries() { [native code] }
Object.prototype.forEach //ƒ forEach() { [native code] }
Object.prototype.map //ƒ map() { [native code] }
Object.prototype.reduce //ƒ reduce() { [native code] }
Object.prototype.filter //ƒ filter() { [native code] }
Object.prototype.find //ƒ find() { [native code] }
...const obj = {
a: 1,
b: 2
}
for (const entry of obj) {
console.log(`Key: ${entry[0]} | Value: ${entry[1]}`);
}Map object is not used like the planned, the vast majority of javascript codebases only uses default objects (and makes operations using Object.entries/keys/values to deal with that data). The main reason is that Map api is not good to use, there is no support to use the spread operator in it and there is no way to create a new Map using an existing object (like new Map({a: 1, b: 2}) - so, only slow/ugly ways to convert and use the data.