Drop support for IE 11

Author: bertdeblock

addon/src/services/page-title.js

@@ -241,15 +241,11 @@ export default class PageTitleService extends Service {
   /**
    * Find token by id
    *
-   * IE11 compatible approach due to lack of Array.find support
-   *
    * @param {String} id
    * @private
    */
   _findTokenById(id) {
-    return this.tokens.filter((token) => {
-      return token.id === id;
-    })[0];
+    return this.tokens.find((token) => token.id === id);
   }
 
   updateFastbootTitle(toBeTitle) {

docs/config/targets.js

@@ -6,21 +6,6 @@ const browsers = [
   'last 1 Safari versions',
 ];
 
-// Ember's browser support policy is changing, and IE11 support will end in
-// v4.0 onwards.
-//
-// See https://deprecations.emberjs.com/v3.x#toc_3-0-browser-support-policy
-//
-// If you need IE11 support on a version of Ember that still offers support
-// for it, uncomment the code block below.
-
-const isCI = Boolean(process.env.CI);
-const isProduction = process.env.EMBER_ENV === 'production';
-
-if (isCI || isProduction) {
-  browsers.push('ie 11');
-}
-
 module.exports = {
   browsers,
   node: 'current', // This is here to avoid "SyntaxError: Unexpected token '.'" from fastboot ember-app.js

test-app/config/targets.js

@@ -6,21 +6,6 @@ const browsers = [
   'last 1 Safari versions',
 ];
 
-// Ember's browser support policy is changing, and IE11 support will end in
-// v4.0 onwards.
-//
-// See https://deprecations.emberjs.com/v3.x#toc_3-0-browser-support-policy
-//
-// If you need IE11 support on a version of Ember that still offers support
-// for it, uncomment the code block below.
-
-const isCI = Boolean(process.env.CI);
-const isProduction = process.env.EMBER_ENV === 'production';
-
-if (isCI || isProduction) {
-  browsers.push('ie 11');
-}
-
 module.exports = {
   browsers,
   node: 'current', // This is here to avoid "SyntaxError: Unexpected token '.'" from fastboot ember-app.js