array.prototype.indexof

    1.0.3 • Public • Published

    array.prototype.indexof Version Badge

    github actions coverage dependency status dev dependency status License Downloads

    npm badge

    An ES2015 spec-compliant Array.prototype.indexof 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.indexOf depends on a receiver (the “this” value), the main export takes the array to operate on as the first argument.

    Example

    var indexOf = require('array.prototype.indexof');
    var assert = require('assert');
    
    assert.equal(indexOf([1, 2, 3], 2), 1);
    assert.equal(indexOf([1, 0, 1], 1), 0);
    assert.equal(indexOf([1, 2, 3], 4), -1);
    assert.equal(indexOf([NaN], NaN), -1);
    var indexOf = require('array.prototype.indexof');
    var assert = require('assert');
    /* when Array#indexOf is not present */
    delete Array.prototype.indexOf;
    var shimmedMap = indexOf.shim();
    assert.equal(shimmedMap, indexOf.getPolyfill());
    assert.equal([1, 2, 3].indexOf(2), 1);
    assert.equal([1, 0, 1].indexOf(1), 0);
    assert.equal([1, 2, 3].indexOf(4), -1);
    assert.equal([NaN].indexOf(NaN), -1);
    var indexOf = require('array.prototype.indexof');
    var assert = require('assert');
    /* when Array#indexOf is present */
    var shimmedMap = indexOf.shim();
    assert.equal(shimmedMap, Array.prototype.indexOf);
    assert.equal([1, 2, 3].indexOf(2), 1);

    Tests

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

    Install

    npm i array.prototype.indexof

    DownloadsWeekly Downloads

    44

    Version

    1.0.3

    License

    MIT

    Unpacked Size

    19.7 kB

    Total Files

    16

    Last publish

    Collaborators

    • ljharb