Better Workaround for prod build error

Workaround for ember-cli/ember-cli-terser#35

config/targets.js

@@ -1,7 +1,22 @@
-module.exports = {
-  browsers: [
+/*
+ * compilation via Browserlist
+ * https://github.com/ai/browserslist
+ * tooling: http://browserl.ist/
+ */
+
+let browsers;
+if (process.env.EMBER_ENV === 'development') {
+  // development performance optimization: transpile for developers browsers
+  browsers = ['last 1 Chrome versions', 'last 1 Firefox versions'];
+} else {
+  browsers = [
+    // '> 0.5%' /* http://browserl.ist/?q=%3E+0.5%25 */
     'last 1 Chrome versions',
     'last 1 Firefox versions',
     'last 1 Safari versions'
-  ]
+  ];
+}
+
+module.exports = {
+  browsers
 };

ember-cli-build.js

@@ -12,12 +12,6 @@ module.exports = function(defaults) {
       extensions: ['css', 'gif', 'js', 'jpg', 'png', 'map', 'svg']
     },
 
-    'ember-cli-uglify': {
-      uglify: {
-        compress: false /* TODO: workaround for https://github.com/ember-cli/ember-cli-uglify/issues/35 */
-      }
-    },
-
     inlineContent: {
       host: {
         content: HOST

package.json

@@ -90,6 +90,7 @@
     "node-fetch"
   ],
   "resolutions": {
-    "ember-simple-auth": "0xadada/ember-simple-auth#13a8a1d461fdac769f566b41beda61972118c2b4"
+    "ember-simple-auth": "0xadada/ember-simple-auth#13a8a1d461fdac769f566b41beda61972118c2b4",
+    "broccoli-uglify-sourcemap": "0xadada/broccoli-uglify-sourcemap#update-deps"
   }
 }

yarn.lock

@@ -1904,9 +1904,9 @@ broccoli-templater@^1.0.0:
     broccoli-stew "^1.2.0"
     lodash.template "^3.3.2"
 
-broccoli-uglify-sourcemap@^2.0.0:
+broccoli-uglify-sourcemap@0xadada/broccoli-uglify-sourcemap#update-deps, broccoli-uglify-sourcemap@^2.0.0:
   version "2.0.2"
-  resolved "https://registry.yarnpkg.com/broccoli-uglify-sourcemap/-/broccoli-uglify-sourcemap-2.0.2.tgz#f4a73112f1f56b46043e2e89cba5ce7762cddeb3"
+  resolved "https://codeload.github.com/0xadada/broccoli-uglify-sourcemap/tar.gz/ae34496fe34c208cec15d00bca8389a356d2ebf4"
   dependencies:
     broccoli-plugin "^1.2.1"
     debug "^3.1.0"
@@ -1915,7 +1915,7 @@ broccoli-uglify-sourcemap@^2.0.0:
     mkdirp "^0.5.0"
     source-map-url "^0.4.0"
     symlink-or-copy "^1.0.1"
-    uglify-es "^3.1.3"
+    uglify-es "^3.1.9"
     walk-sync "^0.3.2"
 
 broccoli-unwatched-tree@^0.1.1:
@@ -2338,7 +2338,7 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@2.12.2, commander@~2.12.1:
+commander@2.12.2:
   version "2.12.2"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.12.2.tgz#0f5946c427ed9ec0d91a46bb9def53e54650e555"
 
@@ -2348,7 +2348,7 @@ commander@2.8.x:
   dependencies:
     graceful-readlink ">= 1.0.0"
 
-commander@^2.5.0, commander@^2.6.0, commander@^2.9.0:
+commander@^2.5.0, commander@^2.6.0, commander@^2.9.0, commander@~2.13.0:
   version "2.13.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.13.0.tgz#6964bca67685df7c1f1430c584f07d7597885b9c"
 
@@ -9376,11 +9376,11 @@ uc.micro@^1.0.1, uc.micro@^1.0.3:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/uc.micro/-/uc.micro-1.0.5.tgz#0c65f15f815aa08b560a61ce8b4db7ffc3f45376"
 
-uglify-es@^3.1.3:
-  version "3.3.5"
-  resolved "https://registry.yarnpkg.com/uglify-es/-/uglify-es-3.3.5.tgz#cf7e695da81999f85196b15e2978862f13212f88"
+uglify-es@^3.1.9:
+  version "3.3.9"
+  resolved "https://registry.yarnpkg.com/uglify-es/-/uglify-es-3.3.9.tgz#0c1c4f0700bed8dbc124cdb304d2592ca203e677"
   dependencies:
-    commander "~2.12.1"
+    commander "~2.13.0"
     source-map "~0.6.1"
 
 uglify-js@^2.6: