Update Infra #969 - Replace isparta with istanbul

.eslintignore

@@ -1,3 +1,5 @@
 dist
 lib
 es
+coverage
+node_modules

karma.conf.coverage.js

@@ -1,6 +1,24 @@
 module.exports = function(config) {
   require('./karma.conf.js')(config);
   config.set({
+    webpack: {
+      module: {
+        rules: config.webpack.module.rules.concat([
+          {
+            test: /\.js$/,
+            exclude: [/node_modules/],
+            use: {
+              loader: 'babel-loader',
+              options: {
+                plugins: ['istanbul']
+              }
+            }
+          }
+        ])
+      }
+    },
+    reporters: config.reporters.concat(['coverage']),
+    plugins: config.plugins.concat(['karma-coverage']),
     coverageReporter: {
       reporters: [
         {

karma.conf.js

@@ -1,10 +1,5 @@
 const path = require('path');
 
-// Note: If we switch to ESM version of babelified files, we'll likely need to
-// update from the ancient isparta-loader. Likely we'll switch to:
-// https://github.com/istanbuljs/babel-plugin-istanbul with a `test` BABEL_ENV
-//
-// https://github.com/FormidableLabs/radium/issues/969
 process.env.BABEL_ENV = 'commonjs';
 
 module.exports = function(config) {
@@ -31,19 +26,7 @@ module.exports = function(config) {
           {
             test: /\.js$/,
             enforce: 'pre',
-            include: path.resolve('src/__tests__/'),
-            loader: 'babel-loader'
-          },
-          {
-            test: /\.js$/,
             include: path.resolve('src/'),
-            enforce: 'pre',
-            exclude: /(__tests__|__mocks__)/,
-            loader: 'isparta-loader?babel-loader'
-          },
-          {
-            test: /\.js$/,
-            exclude: [/node_modules/],
             loader: 'babel-loader'
           },
           {
@@ -87,19 +70,15 @@ module.exports = function(config) {
         flags: ['--no-sandbox']
       }
     },
-    reporters: ['mocha', 'coverage'],
+    reporters: ['mocha'],
     browserNoActivityTimeout: 60000,
     plugins: [
       'karma-chrome-launcher',
-      'karma-coverage',
       'karma-mocha',
       'karma-mocha-reporter',
       'karma-sinon-chai',
       'karma-webpack'
     ],
-    coverageReporter: {
-      type: 'text'
-    },
     browserConsoleLogOptions: {
       level: 'log',
       format: '%b %T: %m',

package.json

@@ -74,6 +74,7 @@
   },
   "devDependencies": {
     "babel-eslint": "^7.1.1",
+    "babel-plugin-istanbul": "^5.1.0",
     "caniuse-api": "^2.0.0",
     "chai": "^3.5.0",
     "color": "^1.0.3",
@@ -89,7 +90,6 @@
     "express-http-proxy": "^0.11.0",
     "flow-bin": "^0.53.1",
     "inject-loader": "^3.0.1",
-    "isparta-loader": "^2.0.0",
     "jsdom": "^12.0.0",
     "jsdom-global": "^3.0.2",
     "karma": "^3.0.0",