fix(babel): fixes the babel 6 hack

Author: huafu

src/util/hacks.spec.ts

@@ -1,5 +1,3 @@
-import { File } from 'babel-core/lib/transformation/file'
-
 import * as hacks from './hacks'
 
 jest.mock(
@@ -20,10 +18,15 @@ jest.mock(
   { virtual: true },
 )
 
+beforeEach(() => {
+  jest.resetModules()
+})
+
 describe('patchBabelCore_githubIssue6577', () => {
   const INPUT = 'foo:bar'
   const initOptions = ({ version = '6.0.0', sourceMaps }: { version?: any; sourceMaps?: any } = {}) => {
     hacks.patchBabelCore_githubIssue6577({ version } as any)
+    const { File } = require('babel-core/lib/transformation/file')
     return new File().initOptions({ sourceMaps, inputSourceMap: true })
   }
 

src/util/hacks.ts

@@ -12,7 +12,9 @@ export const patchBabelCore_githubIssue6577: ModulePatcher<TBabelCore> = babel =
   // This is a hack to bypass it and fix our issue #627
   // The bug disallow debugging when using Babel Jest with babel-core@6.x because of
   // source-maps not being inlined
-  if (typeof babel.version === 'string' && semver.satisfies(babel.version, '>=6 <7')) {
+  if (typeof babel.version !== 'string') return babel
+  const version = semver.coerce(babel.version)
+  if (version && version.major === 6) {
     try {
       const File = require('babel-core/lib/transformation/file').File
       File.prototype.initOptions = (original => {