Add support for *.ts files in karma tests (#350)

* #219 Downgrades karma to v4 to add support for *.ts files
* #219 - Removes unnecessary devDep
* #219 - Upgrades karma to v5 to fix vulnerability

.config/karma/base.js

@@ -9,7 +9,7 @@ module.exports.create = function(config) {
 
     // list of files / patterns to load in the browser
     files: [
-      'karma.starter.js',
+      'karma.starter.ts',
     ],
 
     // list of files / patterns to exclude
@@ -18,7 +18,7 @@ module.exports.create = function(config) {
     // preprocess matching files before serving them to the browser
     // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
     preprocessors: {
-      'karma.starter.js': ['webpack', 'sourcemap'],
+      'karma.starter.ts': ['webpack', 'sourcemap'],
     },
 
     // test results reporter to use
@@ -54,7 +54,22 @@ module.exports.create = function(config) {
     // Webpack's configuration for Karma
     webpack: {
       mode: 'development',
-      devtool: 'inline-source-map',
+      devtool: 'cheap-module-eval-source-map',
+      module: {
+        rules: [
+          {
+            test: /\.ts?$/,
+            loader: 'ts-loader',
+            exclude: /node_modules/,
+            options: {
+              configFile: 'tsconfig.test.json'
+            }
+          },
+        ],
+      },
+      resolve: {
+        extensions: [ '.ts', '.js' ],
+      },
     },
   };
 };

.eslintignore

@@ -3,7 +3,7 @@ node_modules
 
 # Configurations
 *.config.js
-karma.*.js
+karma.*
 doc
 
 # Aut-generated directiories

karma.starter.js → karma.starter.ts

@@ -1,7 +1,7 @@
-import './test-jasmine/test/_setupFiles/bootstrap';
+import './test/_setupFiles/bootstrap';
 
 // require all modules ending in ".spec.js" from the
 // './temp-browser/test' directory and all subdirectories
-const testsContext = require.context('./test-jasmine', true, /.spec.js$/);
+const testsContext = require.context('./test', true, /.spec.ts$/);
 
 testsContext.keys().forEach(testsContext);