feat(babel): log when no .babelrc could be found

Author: eddyerburgh

lib/compilers/babel-compiler.js

@@ -2,7 +2,7 @@ const babel = require('babel-core')
 const path = require('path')
 const fs = require('fs')
 const throwError = require('../throw-error')
-
+const logger = require('../logger')
 var defaultBabelOptions = {
   presets: ['es2015'],
   plugins: ['transform-runtime']
@@ -13,7 +13,7 @@ function getBabelRc (path) {
   try {
     rc = JSON.parse(fs.readFileSync(path, 'utf-8'))
   } catch (e) {
-    throwError('[Your .babelrc seems to be incorrectly formatted.')
+    throwError('Your .babelrc seems to be incorrectly formatted.')
   }
   return rc
 }
@@ -26,6 +26,10 @@ module.exports = function compileBabel (scriptContent) {
 
   const res =  babel.transform(scriptContent, babelOptions)
 
+  if (!babelRcExists) {
+      logger.info('no .babelrc found, defaulting to default babel options')
+  }
+
   return {
     code: res.code,
     sourceMap: res.map

lib/logger.js

@@ -0,0 +1,3 @@
+module.exports.info = function info(msg) {
+  console.info('\n[jest-vue] Info: ' + (msg) + '\n')
+}

package.json

@@ -20,7 +20,7 @@
     "release": "build/release.sh",
     "release:note": "node build/gen-release-note.js",
     "test": "npm run lint && npm run unit",
-    "unit": "cross-env BABEL_ENV=test jest --no-cache --coverage --coverageDirectory test/coverage"
+    "unit": "cross-env BABEL_ENV=test jest --no-cache --coverage --coverageDirectory test/coverage --runInBand"
   },
   "author": "Edd Yerburgh",
   "license": "MIT",

test/Babel.spec.js

@@ -17,9 +17,34 @@ test('processes .vue files with default babel if there is no .babelrc', () => {
   const babelRcPath = resolve(__dirname, '../.babelrc')
   const tempPath = resolve(__dirname, '../.renamed')
   renameSync(babelRcPath, tempPath)
-  const vm = new Vue(Basic).$mount()
-  expect(typeof vm.$el).toBe('object')
+  const filePath = resolve(__dirname, './resources/Basic.vue')
+  const fileString = readFileSync(filePath, { encoding: 'utf8' })
+  try {
+    jestVue.process(fileString, filePath)
+  } catch (err) {
+    renameSync(tempPath, babelRcPath)
+    throw err
+  }
+  renameSync(tempPath, babelRcPath)
+})
+
+test('logs info when there is no .babelrc', () => {
+  const babelRcPath = resolve(__dirname, '../.babelrc')
+  const tempPath = resolve(__dirname, '../.renamed')
+  renameSync(babelRcPath, tempPath)
+  const info = jest.spyOn(global.console, 'info')
+  const filePath = resolve(__dirname, './resources/Basic.vue')
+  const fileString = readFileSync(filePath, { encoding: 'utf8' })
+
+  jestVue.process(fileString, filePath)
+  try {
+    expect(info).toHaveBeenCalledWith('\n[jest-vue] Info: no .babelrc found, defaulting to default babel options\n')
+  } catch (err) {
+    renameSync(tempPath, babelRcPath)
+    throw err
+  }
   renameSync(tempPath, babelRcPath)
+  jest.resetModules()
 })
 
 test('processes .vue files using .babelrc if it exists in route', () => {