fix: also look up loaders in local node_modules in case deps are not hoisted

closes #2599

Author: haoqunjiang

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

@@ -5,6 +5,8 @@ module.exports = (api, options) => {
   const cliServicePath = require('path').dirname(require.resolve('@vue/cli-service'))
 
   api.chainWebpack(webpackConfig => {
+    webpackConfig.resolveLoader.modules.add(path.join(__dirname, 'node_modules'))
+
     const jsRule = webpackConfig.module
       .rule('js')
         .test(/\.jsx?$/)

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

@@ -1,3 +1,5 @@
+const path = require('path')
+
 module.exports = (api, options) => {
   if (options.lintOnSave) {
     const extensions = require('./eslintOptions').extensions(api)
@@ -22,6 +24,8 @@ module.exports = (api, options) => {
     )
 
     api.chainWebpack(webpackConfig => {
+      webpackConfig.resolveLoader.modules.add(path.join(__dirname, 'node_modules'))
+
       webpackConfig.module
         .rule('eslint')
           .pre()

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

@@ -1,8 +1,12 @@
+const path = require('path')
+
 module.exports = (api, options) => {
   const fs = require('fs')
   const useThreads = process.env.NODE_ENV === 'production' && options.parallel
 
   api.chainWebpack(config => {
+    config.resolveLoader.modules.add(path.join(__dirname, 'node_modules'))
+
     if (!options.pages) {
       config.entry('app')
         .clear()