refactor(codegen): style injection

Author: Airkro

lib/codegen/styleInjection.js

@@ -40,7 +40,7 @@ module.exports = function genStyleInjectionCode (
 
     // `(vue-)style-loader` exports the name-to-hash map directly
     // `css-loader` exports it in `.locals`
-    const locals = `(style${i}.locals || style${i})`
+    const locals = `style${i}`
     const name = JSON.stringify(moduleName)
 
     if (!needsHotReload) {
@@ -81,7 +81,7 @@ module.exports = function genStyleInjectionCode (
       // do not generate requests for empty styles
       if (isNotEmptyStyle(style)) {
         const request = genStyleRequest(style, i)
-        styleImportsCode += `import style${i} from ${request}\n`
+        styleImportsCode += `import * as style${i} from ${request}\n`
         if (style.module) genCSSModulesCode(style, request, i)
       }
     })

lib/loaders/pitcher.js

@@ -121,7 +121,7 @@ module.exports.pitch = function (remainingRequest) {
       ])
       // console.log(request)
       return query.module
-        ? `import * as locals from ${request};export default { locals };export * from ${request}`
+        ? `export { default } from ${request}; export * from ${request}`
         : `export * from ${request}`
     }
   }