104 lines
3.6 KiB
JavaScript
104 lines
3.6 KiB
JavaScript
function mathPolyfills() {
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// Converts from degrees to radians.
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Math.radians = function (degrees) {
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return (degrees * Math.PI) / 180.0;
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};
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// Converts from radians to degrees.
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Math.degrees = function (radians) {
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return (radians * 180.0) / Math.PI;
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};
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}
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function stringPolyfills() {
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// https://github.com/uxitten/polyfill/blob/master/string.polyfill.js
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart
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if (!String.prototype.padStart) {
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String.prototype.padStart = function padStart(targetLength, padString) {
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targetLength = targetLength >> 0; //truncate if number, or convert non-number to 0;
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padString = String(typeof padString !== "undefined" ? padString : " ");
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if (this.length >= targetLength) {
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return String(this);
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} else {
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targetLength = targetLength - this.length;
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if (targetLength > padString.length) {
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padString += padString.repeat(targetLength / padString.length); //append to original to ensure we are longer than needed
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}
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return padString.slice(0, targetLength) + String(this);
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}
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};
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}
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// https://github.com/uxitten/polyfill/blob/master/string.polyfill.js
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padEnd
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if (!String.prototype.padEnd) {
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String.prototype.padEnd = function padEnd(targetLength, padString) {
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targetLength = targetLength >> 0; //floor if number or convert non-number to 0;
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padString = String(typeof padString !== "undefined" ? padString : " ");
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if (this.length > targetLength) {
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return String(this);
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} else {
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targetLength = targetLength - this.length;
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if (targetLength > padString.length) {
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padString += padString.repeat(targetLength / padString.length); //append to original to ensure we are longer than needed
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}
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return String(this) + padString.slice(0, targetLength);
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}
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};
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}
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}
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function objectPolyfills() {
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// https://github.com/tc39/proposal-object-values-entries/blob/master/polyfill.js
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// @ts-ignore
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const reduce = Function.bind.call(Function.call, Array.prototype.reduce);
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// @ts-ignore
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const isEnumerable = Function.bind.call(Function.call, Object.prototype.propertyIsEnumerable);
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// @ts-ignore
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const concat = Function.bind.call(Function.call, Array.prototype.concat);
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const keys = Reflect.ownKeys;
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// @ts-ignore
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if (!Object.values) {
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// @ts-ignore
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Object.values = function values(O) {
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return reduce(
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keys(O),
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(v, k) => concat(v, typeof k === "string" && isEnumerable(O, k) ? [O[k]] : []),
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[]
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);
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};
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}
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if (!Object.entries) {
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// @ts-ignore
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Object.entries = function entries(O) {
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return reduce(
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keys(O),
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(e, k) => concat(e, typeof k === "string" && isEnumerable(O, k) ? [[k, O[k]]] : []),
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[]
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);
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};
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}
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}
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function initPolyfills() {
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mathPolyfills();
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stringPolyfills();
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objectPolyfills();
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}
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function initExtensions() {
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String.prototype.replaceAll = function (search, replacement) {
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var target = this;
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return target.split(search).join(replacement);
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};
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}
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// Fetch polyfill
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import "whatwg-fetch";
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// Other polyfills
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initPolyfills();
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initExtensions();
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