IE tracker fix

lib/ie.js

@@ -0,0 +1,70 @@
+//Polyfill for HTMLCollection.forEach and NodeList.forEach
+if ('NodeList' in window && !NodeList.prototype.forEach) {
+  NodeList.prototype.forEach = function (callback, thisArg) {
+    thisArg = thisArg || window;
+    for (var i = 0; i < this.length; i++) {
+      callback.call(thisArg, this[i], i, this);
+    }
+  };
+}
+
+if ('HTMLCollection' in window && !HTMLCollection.prototype.forEach) {
+  HTMLCollection.prototype.forEach = function (callback, thisArg) {
+    thisArg = thisArg || window;
+    for (var i = 0; i < this.length; i++) {
+      callback.call(thisArg, this[i], i, this);
+    }
+  };
+}
+
+//Polyfill fo URL
+
+if (typeof window.URL !== 'function') {
+  window.URL = function (url) {
+    let protocol = url.split('//')[0],
+      comps = url
+        .split('#')[0]
+        .replace(/^(https:\/\/|http:\/\/)|(\/)$/g, '')
+        .split('/'),
+      host = comps[0],
+      search = comps[comps.length - 1].split('?')[1],
+      tmp = host.split(':'),
+      port = tmp[1],
+      hostname = tmp[0];
+
+    search = typeof search !== 'undefined' ? '?' + search : '';
+
+    const params = search
+      .slice(1)
+      .split('&')
+      .map(p => p.split('='))
+      .reduce((obj, pair) => {
+        const [key, value] = pair.map(decodeURIComponent);
+        return { ...obj, [key]: value };
+      }, {});
+
+    return {
+      hash: url.indexOf('#') > -1 ? url.substring(url.indexOf('#')) : '',
+      protocol,
+      host,
+      hostname,
+      href: url,
+      pathname:
+        '/' +
+        comps
+          .splice(1)
+          .map(function (o) {
+            return /\?/.test(o) ? o.split('?')[0] : o;
+          })
+          .join('/'),
+      search,
+      origin: protocol + '//' + host,
+      port: typeof port !== 'undefined' ? port : '',
+      searchParams: {
+        get: p => (p in params ? params[p] : ''),
+        getAll: () => params,
+      },
+    };
+  };
+}
+/* Polyfill IE 11 end */

package.json

@@ -96,9 +96,14 @@
     "uuid": "^8.3.1"
   },
   "devDependencies": {
+    "@babel/core": "^7.12.3",
+    "@babel/plugin-transform-runtime": "^7.12.1",
+    "@babel/preset-env": "^7.12.1",
     "@formatjs/cli": "^2.13.5",
     "@prisma/cli": "2.10.1",
+    "@rollup/plugin-babel": "^5.2.1",
     "@rollup/plugin-buble": "^0.21.3",
+    "@rollup/plugin-commonjs": "^16.0.0",
     "@rollup/plugin-node-resolve": "^10.0.0",
     "@rollup/plugin-replace": "^2.3.4",
     "@svgr/webpack": "^5.4.0",

rollup.tracker.config.js

@@ -1,13 +1,31 @@
 import 'dotenv/config';
+import babel, { getBabelOutputPlugin } from '@rollup/plugin-babel';
 import buble from '@rollup/plugin-buble';
 import resolve from '@rollup/plugin-node-resolve';
 import { terser } from 'rollup-plugin-terser';
+import commonjs from '@rollup/plugin-commonjs';
 
 export default {
   input: 'tracker/index.js',
   output: {
     file: 'public/umami.js',
-    format: 'iife',
+    format: 'cjs',
+    plugins: [
+      getBabelOutputPlugin({
+        presets: ['@babel/preset-env'],
+        plugins: [['@babel/plugin-transform-runtime', { useESModules: true }]],
+      }),
+    ],
   },
-  plugins: [resolve(), buble({ objectAssign: true }), terser({ compress: { evaluate: false } })],
+  plugins: [
+    resolve(),
+    commonjs(),
+    babel({
+      babelHelpers: 'bundled',
+      presets: ['@babel/preset-env'],
+    }),
+
+    buble({ objectAssign: true, target: { ie: 9 } }),
+    terser({ compress: { evaluate: false } }),
+  ],
 };

tracker/index.js

@@ -1,3 +1,4 @@
+import '../lib/ie';
 import { doNotTrack, hook } from '../lib/web';
 import { removeTrailingSlash } from '../lib/url';