Fix coverage report generation

Rija Menage · Rija Menage · commit 118d94b07a9a · 2019-12-17T14:30:59.000+08:00
what was required was to add a coverage entry in the preprocessor for spec.js files
and make sure @babel/core and @babel/preset-env are installed in addition to babel-* packages.

Finally babel-loader needs to be added in webpack config's rules.
diff --git a/karma.conf.js b/karma.conf.js
@@ -14,7 +14,7 @@ module.exports = function(config) {
     // preprocess matching files before serving them to the browser
     // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
     preprocessors: {
-      '**/*.spec.js': ['webpack', 'sourcemap']
+      '**/*.spec.js': ['webpack', 'sourcemap','coverage']
     },
 
     webpack: webpackConfig,
diff --git a/package.json b/package.json
@@ -10,9 +10,13 @@
     "vue": "^2.6.11"
   },
   "devDependencies": {
+    "@babel/core": "^7.7.5",
+    "@babel/preset-env": "^7.7.6",
     "@vue/test-utils": "^1.0.0-beta.30",
+    "babel-core": "^6.26.3",
+    "babel-loader": "^8.0.6",
+    "babel-plugin-istanbul": "^5.2.0",
     "css-loader": "^3.3.2",
-    "file-loader": "^5.0.2",
     "jasmine-core": "^3.5.0",
     "karma": "^4.4.1",
     "karma-chrome-launcher": "^3.1.0",
diff --git a/webpack.config.js b/webpack.config.js
@@ -18,6 +18,16 @@ module.exports = {
           'vue-style-loader',
           'css-loader'
         ]
+      },
+      {
+        test: /\.m?js$/,
+        exclude: /(node_modules|bower_components)/,
+        use: {
+          loader: 'babel-loader',
+          options: {
+            presets: ['@babel/preset-env']
+          }
+        }
       }
     ]
   },

Original file line number	Diff line number	Diff line change
`@@ -18,6 +18,16 @@ module.exports = {`
`18`	`18`	`'vue-style-loader',`
`19`	`19`	`'css-loader'`
`20`	`20`	`]`
	`21`	`+ },`
	`22`	`+ {`
	`23`	`+ test: /\.m?js$/,`
	`24`	`+ exclude: /(node_modules\|bower_components)/,`
	`25`	`+ use: {`
	`26`	`+ loader: 'babel-loader',`
	`27`	`+ options: {`
	`28`	`+ presets: ['@babel/preset-env']`
	`29`	`+ }`
	`30`	`+ }`
`21`	`31`	`}`
`22`	`32`	`]`
`23`	`33`	`},`