src/polyfills.ts

@@ -64,3 +64,5 @@ import 'zone.js/dist/zone'; // Included with Angular CLI.
 /***************************************************************************************************
  * APPLICATION IMPORTS
  */
+
+import './polyfills/pad-start.js';

src/polyfills/pad-start.js

+// https://github.com/uxitten/polyfill/blob/master/string.polyfill.js
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart
+if (!String.prototype.padStart) {
+ String.prototype.padStart = function padStart(targetLength, padString) {
+ targetLength = targetLength >> 0; //truncate if number, or convert non-number to 0;
+ padString = String(typeof padString !== 'undefined' ? padString : ' ');
+ if (this.length >= targetLength) {
+ return String(this);
+ } else {
+ targetLength = targetLength - this.length;
+ if (targetLength > padString.length) {
+ padString += padString.repeat(targetLength / padString.length); //append to original to ensure we are longer than needed
+ }
+ return padString.slice(0, targetLength) + String(this);
+ }
+ };
+}