use resolve for even more robust dep checking

Author: yyx990803

lib/utils/try-require.js

@@ -1,13 +1,15 @@
-var fs = require('fs')
-var path = require('path')
 var cwd = process.cwd()
+var resolve = require('resolve')
 
 // attempts to first require a dep using projects cwd (when vue-loader is linked)
 // then try a normal require.
 module.exports = function tryRequire (dep) {
-  var cwdPath = path.resolve(cwd, 'node_modules', dep)
-  if (fs.existsSync(cwdPath)) {
-    return require(cwdPath)
+  var fromCwd
+  try {
+    fromCwd = resolve.sync(dep, { basedir: cwd })
+  } catch (e) {}
+  if (fromCwd) {
+    return require(fromCwd)
   } else {
     try {
       return require(dep)

package.json

@@ -37,6 +37,7 @@
     "postcss": "^5.0.21",
     "postcss-load-config": "^1.1.0",
     "postcss-selector-parser": "^2.0.0",
+    "resolve": "^1.3.3",
     "source-map": "^0.5.6",
     "vue-hot-reload-api": "^2.1.0",
     "vue-style-loader": "^3.0.0",