From ab4b43aa10306863d3cc1d4e131ef1cadf628988 Mon Sep 17 00:00:00 2001
From: mrodal <maticosas@gmail.com>
Date: Mon, 26 Aug 2019 16:43:13 -0300
Subject: [PATCH] Support webpack aliases

---
 src/index.js | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/src/index.js b/src/index.js
index 3a02b06..35aaa96 100644
--- a/src/index.js
+++ b/src/index.js
@@ -23,7 +23,8 @@ const loader = function (source, map) {
   validateOptions(schema, options, 'vue-inheritance-loader');
 
   let callback = this.async();
-  getMergedCode(source, this.context).then(result => {
+  let aliases = this._compiler.options.resolve.alias;
+  getMergedCode(source, this.context, aliases).then(result => {
     // To make HMR aware of the base file and reload it when it changes
     result.ancestorsPaths.forEach(ancestor => {
       this.addDependency(ancestor);
@@ -37,9 +38,9 @@ const loader = function (source, map) {
   });
 };
 
-const getMergedCode = function (source, currPath) {
+const getMergedCode = function (source, currPath, aliases) {
   return new Promise((resolve, reject) => {
-    resolveComponent(source, currPath).then(({source, ancestorsPaths}) => {
+    resolveComponent(source, currPath, aliases).then(({source, ancestorsPaths}) => {
 
       // Remove comment lines at beginning of script block that were generated by the SFC parser
       let finalDescriptor = toDescriptor(source);
@@ -67,7 +68,7 @@ const getMergedCode = function (source, currPath) {
   })
 };
 
-function resolveComponent(currentSource, currPath) {
+function resolveComponent(currentSource, currPath, aliases) {
   return new Promise((resolve, reject) => {
     try {
       let currentDesc = toDescriptor(currentSource);
@@ -76,7 +77,17 @@ function resolveComponent(currentSource, currPath) {
       // else return code as is
       if (currentDesc.template && currentDesc.template.attrs[options.EXTENDS_ATTR]) {
         let baseRelPath = currentDesc.template.attrs[options.EXTENDS_ATTR];
-        let baseAbsPath = path.join(currPath, baseRelPath);
+        let baseRelPathParts = baseRelPath.split(/[\/\\]/);
+
+        // If there's a matching alias, use it. If not, use the context path
+        let matchingAlias = Object.keys(aliases).find(k => baseRelPathParts[0] === k);
+        if (matchingAlias) {
+          baseRelPathParts.shift();
+          baseRelPath = baseRelPathParts.join('/');
+          var baseAbsPath = path.join(aliases[matchingAlias], baseRelPath);
+        } else {
+          var baseAbsPath = path.join(currPath, baseRelPath);
+        }
 
         fs.readFile(baseAbsPath, 'utf8', (err, contents) => {
           // File read error, reject
@@ -84,7 +95,7 @@ function resolveComponent(currentSource, currPath) {
 
           // Resolve the base component recursively to support inheritance in N levels
           let basePath = path.dirname(baseAbsPath);
-          resolveComponent(contents, basePath).then(({source, ancestorsPaths}) => {
+          resolveComponent(contents, basePath, aliases).then(({source, ancestorsPaths}) => {
             try {
               // Add this ancestor to the ancestors return array
               ancestorsPaths.push(baseAbsPath);
@@ -129,7 +140,7 @@ function resolveComponent(currentSource, currPath) {
           });
         });
       } else {
-        resolve({source:currentSource, ancestorsPaths:[]});
+        resolve({source: currentSource, ancestorsPaths: []});
       }
     } catch (e) {
       reject(e)