Circle: Introduce es-check to branches & pr workflow (#21677)

* Transpile selected es6 node deps

* Add es-check to build-fast-frontend

* change es-check is used

* transpile react-hook-form

.circleci/config.yml

@@ -419,6 +419,12 @@ jobs:
       - run:
           name: build grafana frontend
           command: './scripts/build/build.sh --fast --frontend-only'
+      - run:
+          name: es-check install
+          command: 'yarn global add es-check'
+      - run:
+          name: es-check run
+          command: 'es-check es5 ./public/build/*.js'
       - save_cache:
           key: frontend-dependency-cache-{{ checksum "yarn.lock" }}
           paths:

scripts/webpack/webpack.common.js

 const path = require('path');
 
+// https://github.com/visionmedia/debug/issues/701#issuecomment-505487361
+function shouldExclude(filename) {
+  const packagesToProcessbyBabel = ['debug', 'lru-cache', 'yallist', 'apache-arrow', 'react-hook-form'];
+  for (const package of packagesToProcessbyBabel) {
+    if (filename.indexOf(`node_modules/${package}`) > 0) {
+      return false;
+    }
+  }
+  return true;
+}
+
 module.exports = {
   target: 'web',
   entry: {
@@ -19,15 +30,34 @@ module.exports = {
   stats: {
     children: false,
     warningsFilter: /export .* was not found in/,
-    source: false
+    source: false,
   },
   node: {
     fs: 'empty',
   },
   module: {
-    rules: [{
+    rules: [
+      /**
+       * Some npm packages are bundled with es2015 syntax, ie. debug
+       * To make them work with PhantomJS we need to transpile them
+       * to get rid of unsupported syntax.
+       */
+      {
+        test: /\.js$/,
+        exclude: shouldExclude,
+        use: [
+          {
+            loader: 'babel-loader',
+            options: {
+              presets: [['@babel/preset-env']],
+            },
+          },
+        ],
+      },
+      {
         test: require.resolve('jquery'),
-        use: [{
+        use: [
+          {
             loader: 'expose-loader',
             query: 'jQuery',
           },
@@ -40,7 +70,8 @@ module.exports = {
       {
         test: /\.html$/,
         exclude: /(index|error)\-template\.html/,
-        use: [{
+        use: [
+          {
             loader: 'ngtemplate-loader?relativeTo=' + path.resolve(__dirname, '../../public') + '&prefix=public',
           },
           {
@@ -68,26 +99,26 @@ module.exports = {
           test: /[\\/]node_modules[\\/]moment[\\/].*[jt]sx?$/,
           chunks: 'initial',
           priority: 20,
-          enforce: true
+          enforce: true,
         },
         angular: {
           test: /[\\/]node_modules[\\/]angular[\\/].*[jt]sx?$/,
           chunks: 'initial',
           priority: 50,
-          enforce: true
+          enforce: true,
         },
         vendors: {
           test: /[\\/]node_modules[\\/].*[jt]sx?$/,
           chunks: 'initial',
           priority: -10,
           reuseExistingChunk: true,
-          enforce: true
+          enforce: true,
         },
         default: {
           priority: -20,
           chunks: 'all',
           test: /.*[jt]sx?$/,
-          reuseExistingChunk: true
+          reuseExistingChunk: true,
         },
       },
     },