code re-use and eslint

extra/update-version.js

@@ -1,26 +1,10 @@
-/**
- * String.prototype.replaceAll() polyfill
- * https://gomakethings.com/how-to-replace-a-section-of-a-string-with-another-one-with-vanilla-js/
- * @author Chris Ferdinandi
- * @license MIT
- */
-if (!String.prototype.replaceAll) {
-    String.prototype.replaceAll = function(str, newStr) {
-
-        // If a regex pattern
-        if (Object.prototype.toString.call(str).toLowerCase() === "[object regexp]") {
-            return this.replace(str, newStr);
-        }
-
-        // If a string
-        return this.replace(new RegExp(str, "g"), newStr);
-
-    };
-}
-
 const pkg = require("../package.json");
 const fs = require("fs");
 const child_process = require("child_process");
+const util = require("../src/util");
+
+util.polyfill();
+
 const oldVersion = pkg.version;
 const newVersion = process.argv[2];