fix: fix scoped modules exclusion on windows (#2379)

closes #2251

packages/@vue/cli-plugin-babel/__tests__/transpileDependencies.spec.js

@@ -26,6 +26,16 @@ beforeAll(async () => {
     `const test = () => "__TEST__";\nexport default test`
   )
 
+  await project.write(
+    'node_modules/@scope/external-dep/package.json',
+    `{ "name": "@scope/external-dep", "version": "1.0.0", "main": "index.js" }`
+  )
+
+  await project.write(
+    'node_modules/@scope/external-dep/index.js',
+    `const test = () => "__SCOPE_TEST__";\nexport default test`
+  )
+
   let $packageJson = await project.read('package.json')
 
   $packageJson = JSON.parse($packageJson)
@@ -39,7 +49,12 @@ beforeAll(async () => {
 
   let $mainjs = await project.read('src/main.js')
 
-  $mainjs = `import test from 'external-dep'\n${$mainjs}\ntest()`
+  $mainjs = `
+  import test from 'external-dep'
+  import scopeTest from '@scope/external-dep'
+  ${$mainjs}
+  test()
+  scopeTest()`
 
   await project.write(
     'src/main.js',
@@ -59,4 +74,6 @@ test('dep from node_modules should been transpiled', async () => {
   )
   await project.run('vue-cli-service build')
   expect(await readVendorFile()).toMatch('return "__TEST__"')
+
+  expect(await readVendorFile()).toMatch('return "__SCOPE_TEST__"')
 })

packages/@vue/cli-plugin-babel/index.js

@@ -1,3 +1,5 @@
+const path = require('path')
+
 module.exports = (api, options) => {
   const useThreads = process.env.NODE_ENV === 'production' && options.parallel
   const cliServicePath = require('path').dirname(require.resolve('@vue/cli-service'))
@@ -17,7 +19,13 @@ module.exports = (api, options) => {
               return true
             }
             // check if this is something the user explicitly wants to transpile
-            if (options.transpileDependencies.some(dep => filepath.match(dep))) {
+            if (options.transpileDependencies.some(dep => {
+              if (typeof dep === 'string') {
+                return filepath.includes(path.normalize(dep))
+              } else {
+                return filepath.match(dep)
+              }
+            })) {
               return false
             }
             // Don't transpile node_modules