An ES5 spec-compliant `Array.isArray` shim/polyfill/replacement that works as far down as ES3.
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An ES spec-compliant Array.isArray 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.isArray depends on a receiver (the “this” value), the main export takes the array to operate on as the first argument.
``js
var isArray = require('array.isarray');
var assert = require('assert');
assert.equal(isArray([1, 2, 3]), true);
assert.equal(isArray({ length: 0 }), false);
`
`js`
var isArray = require('array.isarray');
var assert = require('assert');
/ when Array.isArray is not present /
delete Array.isArray;
var shimmed = isArray.shim();
assert.equal(shimmed, isArray.getPolyfill());
assert.equal(shimmed, Array.isArray);
assert.equal(isArray([1, 2, 3]), Array.isArray([1, 2, 3]));
`js`
var isArray = require('array.isarray');
var assert = require('assert');
/ when Array.isArray is present /
var shimmed = isArray.shim();
assert.equal(shimmed, Array.isArray);
assert.deepEqual(Array.isArray([1, 2, 3]), isArray([1, 2, 3]));
, and run npm test`[package-url]: https://npmjs.org/package/array.prototype.isarray
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