Added: preserveSymlinks option to control dependency resolution

Author: Thomas Heymann

README.md

@@ -148,7 +148,7 @@ You can use [resolve](https://github.com/substack/node-resolve) for this.
 #### `load`
 
 Type: `Function`  
-Default: null
+Default: `null`
 
 You can overwrite the default loading way by setting this option.
 This function gets `(filename, importOptions)` arguments and returns content or
@@ -177,6 +177,14 @@ This option is only for adding additional directories to default resolver. If
 you provide your own resolver via the `resolve` configuration option above, then
 this value will be ignored.
 
+#### `preserveSymlinks`
+
+Type: `Boolean`  
+Default: `true`
+
+If true, does not resolve symlinks to real paths before resolving dependencies. This is the way Node resolves dependencies when executed with the [--preserve-symlinks](https://nodejs.org/api/all.html#cli_preserve_symlinks) flag. 
+_Note: Set to false to use Node's default resolution algorithm._
+
 #### Example with some options
 
 ```js

index.js

@@ -22,6 +22,7 @@ function AtImport(options) {
       load: loadContent,
       plugins: [],
       addModulesDirectories: [],
+      preserveSymlinks: true,
     },
     options
   )

lib/resolve-id.js

@@ -13,6 +13,7 @@ function resolveModule(id, opts) {
 
 module.exports = function(id, base, options) {
   const paths = options.path
+  const preserveSymlinks = options.preserveSymlinks
 
   const resolveOpts = {
     basedir: base,
@@ -24,6 +25,7 @@ module.exports = function(id, base, options) {
       else if (!pkg.main || !/\.css$/.test(pkg.main)) pkg.main = "index.css"
       return pkg
     },
+    preserveSymlinks: preserveSymlinks,
   }
 
   return resolveModule(`./${id}`, resolveOpts)