Nattily Polished Marbles

    array.prototype.entries

    1.1.0 • Public • Published

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    An ES2015 spec-compliant Array.prototype.entries shim/polyfill/replacement that works as far down as ES3.

    This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.

    Because Array.prototype.entries depends on a receiver (the “this” value), the main export takes the array to operate on as the first argument.

    Example

    var entries = require('array.prototype.entries');
    var assert = require('assert');
    var iterate = require('iterate-iterator');
    
    assert.deepStrictEqual(iterate(entries([1, 2, 3])), [[0, 1], [1, 2], [2, 3]]);
    assert.deepStrictEqual(iterate(entries([1, 0, 1])), [[0, 1], [1, 0], [2, 1]]);
    assert.deepStrictEqual(iterate(entries([NaN])), [[0, NaN]]);
    assert.deepStrictEqual(iterate(entries([1,,3])), [[0, 1], [1, undefined], [2, 3]]);
    var entries = require('array.prototype.entries');
    var assert = require('assert');
    /* when Array#entries is not present */
    delete Array.prototype.entries;
    var shimmedMap = entries.shim();
    assert.deepStrictEqual(shimmedMap, entries.getPolyfill());
    assert.deepStrictEqual(iterate([1, 2, 3].entries()), [[0, 1], [1, 2], [2, 3]]);
    assert.deepStrictEqual(iterate([1, 0, 1].entries()), [[0, 1], [1, 0], [2, 1]]);
    assert.deepStrictEqual(iterate([NaN].entries()), [[0, NaN]]);
    assert.deepStrictEqual(iterate([1,,3].entries()), [[0, 1], [1, undefined], [2, 3]]);
    var entries = require('array.prototype.entries');
    var assert = require('assert');
    /* when Array#entries is present */
    var shimmedMap = entries.shim();
    assert.equal(shimmedMap, Array.prototype.entries);
    assert.deepStrictEqual(iterate([1, 2, 3].entries()), [[0, 1], [1, 2], [2, 3]]);

    Tests

    Simply clone the repo, npm install, and run npm test

    Install

    npm i array.prototype.entries

    DownloadsWeekly Downloads

    63

    Version

    1.1.0

    License

    MIT

    Unpacked Size

    21.8 kB

    Total Files

    16

    Last publish

    Collaborators

    • ljharb