upgrade karma-typescript to v5 (which supports es modules, reducing need for karma-typescript-es6-transform)

Author: ryanio

karma.conf.js

@@ -9,10 +9,6 @@ module.exports = function(config) {
     karmaTypescriptConfig: {
       bundlerOptions: {
         entrypoints: /\.spec\.ts$/,
-        acornOptions: {
-          ecmaVersion: 8,
-        },
-        transforms: [require('karma-typescript-es6-transform')()],
       },
     },
     colors: true,

package.json

@@ -67,8 +67,7 @@
     "karma-chrome-launcher": "^2.0.0",
     "karma-firefox-launcher": "^1.0.0",
     "karma-mocha": "^2.0.0",
-    "karma-typescript": "^4.1.1",
-    "karma-typescript-es6-transform": "^5.0.2",
+    "karma-typescript": "^5.0.2",
     "lodash.zip": "^4.2.0",
     "mocha": "^7.1.2",
     "nyc": "^15.0.1",