array.prototype.tospliced/shim.js

An ESnext spec-compliant `Array.prototype.toSpliced` shim/polyfill/replacement that works as far down as ES3.

'use strict';

var define = require('define-properties');
var shimUnscopables = require('es-shim-unscopables');

var getPolyfill = require('./polyfill');

module.exports = function shim() {
	var polyfill = getPolyfill();

	define(
		Array.prototype,
		{ toSpliced: polyfill },
		{ toSpliced: function () { return Array.prototype.toSpliced !== polyfill; } }
	);

	shimUnscopables('toSpliced');

	return polyfill;
};