TypeError: Cannot read property 'bindings' of null

ERROR in ./src/main.js
Module build failed (from ./node_modules/babel-loader/lib/index.js):
TypeError: E:webs	estsrcmain.js: Cannot read property 'bindings' of null
    at Scope.moveBindingTo (E:webs	est
ode_modules@babel	raverselibscopeindex.js:929:13)
    at BlockScoping.updateScopeInfo (E:webs	est
ode_modulesabel-plugin-transform-es2015-block-scopinglibindex.js:364:17)
    at BlockScoping.run (E:webs	est
ode_modulesabel-plugin-transform-es2015-block-scopinglibindex.js:330:12)
    at PluginPass.BlockStatementSwitchStatementProgram (E:webs	est
ode_modulesabel-plugin-transform-es2015-block-scopinglibindex.js:70:24)
    at newFn (E:webs	est
ode_modules@babel	raverselibvisitors.js:175:21)
    at NodePath._call (E:webs	est
ode_modules@babel	raverselibpathcontext.js:55:20)
    at NodePath.call (E:webs	est
ode_modules@babel	raverselibpathcontext.js:42:17)
    at NodePath.visit (E:webs	est
ode_modules@babel	raverselibpathcontext.js:92:31)
    at TraversalContext.visitQueue (E:webs	est
ode_modules@babel	raverselibcontext.js:112:16)
    at TraversalContext.visitSingle (E:webs	est
ode_modules@babel	raverselibcontext.js:84:19)
    at TraversalContext.visit (E:webs	est
ode_modules@babel	raverselibcontext.js:140:19)
    at Function.traverse.node (E:webs	est
ode_modules@babel	raverselibindex.js:82:17)
    at traverse (E:webs	est
ode_modules@babel	raverselibindex.js:64:12)
    at transformFile (E:webs	est
ode_modules@babelcorelib	ransformationindex.js:107:29)
    at transformFile.next (<anonymous>)
    at run (E:webs	est
ode_modules@babelcorelib	ransformationindex.js:35:12)
    at run.next (<anonymous>)
    at Function.transform (E:webs	est
ode_modules@babelcorelib	ransform.js:27:41)
    at transform.next (<anonymous>)
    at E:webs	est
ode_modulesgensyncindex.js:266:13
    at async.call.result.err.err (E:webs	est
ode_modulesgensyncindex.js:216:11)
    at E:webs	est
ode_modulesgensyncindex.js:184:28
    at E:webs	est
ode_modules@babelcorelibgensync-utilsasync.js:72:7
    at E:webs	est
ode_modulesgensyncindex.js:108:33
    at step (E:webs	est
ode_modulesgensyncindex.js:280:14)
    at E:webs	est
ode_modulesgensyncindex.js:266:13
    at async.call.result.err.err (E:webs	est
ode_modulesgensyncindex.js:216:11)

webpack是4.2X的，改成这样就好了　

module: {
    rules: [
      {
        test: /.js$/,
        loader: 'babel-loader',
        exclude: path.join(__dirname, '/node_modules/'),
        include: path.join(__dirname, 'src')
      }]
}