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es-iterator-helpers
Advanced tools
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
An ESnext spec-compliant sync iterator helpers shim/polyfill/replacement that works as far down as ES3.
This package implements the es-shim API “multi” interface. It works in an ES3-supported environment and complies with the spec.
Because the Iterator.prototype
methods depend on a receiver (the this
value), the main export in each subdirectory takes the string to operate on as the first argument.
The main export of the package itself is simply an array of the available directory names. It’s sole intended use is for build tooling and testing.
Iterator
constructorIterator.from
Iterator.prototype.constructor
Iterator.prototype.drop
Iterator.prototype.every
Iterator.prototype.filter
Iterator.prototype.find
Iterator.prototype.flatMap
Iterator.prototype.forEach
Iterator.prototype.map
Iterator.prototype.reduce
Iterator.prototype.some
Iterator.prototype.take
Iterator.prototype.toArray
npm install --save es-iterator-helpers
const map = require('es-iterator-helpers/Iterator.prototype.map');
const toArray = require('es-iterator-helpers/Iterator.prototype.toArray');
const assert = require('assert');
const iterator = [1, 2, 3].values();
const mapped = map(iterator, (x) => x + 10);
assert.deepEqual(
mapped.next(),
{
done: false,
value: 11,
}
);
assert.deepEqual(
toArray(mapped),
[12, 13]
);
require('./auto'); // shim all of the methods
require('./Iterator.prototype.map/auto'); // shim the “map” method
Simply clone the repo, npm install
, and run npm test
FAQs
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
The npm package es-iterator-helpers receives a total of 10,397,618 weekly downloads. As such, es-iterator-helpers popularity was classified as popular.
We found that es-iterator-helpers demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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