feat(alias): auto-detect aliases

Auto-detection relies on isAbsoluteModule and isNodeModule

BREAKING CHANGE: options.alias is no longer required/valid

fix #11

README.md

@@ -9,12 +9,20 @@
 A style for [import-sort](https://github.com/renke/import-sort) that is focused
 on modules with relative modules alias support.
 
+## Migrating from v1 to v2
+
+Previously, we had to fill an `alias` option with the aliases list (e.g. `["components", "modules"]`).
+
+Now it auto-detects aliases using the following combined rules:
+
+- Aliases are absolute modules: `isAbsoluteModule`
+- Aliases aren't node modules: `not(isNodeModule)`
+
 ## Options
 
-| Name                   | Type     | Description                                                       | Default value |
-| ---------------------- | -------- | ----------------------------------------------------------------- | ------------- |
-| alias                  | string[] | List of resolver aliases                                          | []            |
-| overrideBuiltInModules | boolean  | Whether an alias should override a Node built-in module (e.g. fs) | true          |
+| Name                   | Type    | Description                                                       | Default value |
+| ---------------------- | ------- | ----------------------------------------------------------------- | ------------- |
+| overrideBuiltInModules | boolean | Whether an alias should override a Node built-in module (e.g. fs) | true          |
 
 ## Configuration
 

src/index.ts

@@ -1,22 +1,13 @@
-import { IImport } from 'import-sort-parser';
 import { IStyleAPI, IStyleItem } from 'import-sort-style';
 
 export interface Options {
-  alias: string[];
   overrideBuiltinModules: boolean;
 }
 
-const hasAlias = (aliases: string[]) => (imported: IImport): boolean =>
-  aliases.some(
-    (alias: string): boolean =>
-      imported.moduleName === alias ||
-      imported.moduleName.indexOf(`${alias}/`) === 0
-  );
-
 export default (
   styleApi: IStyleAPI,
   _file?: string,
-  { alias: aliases = [], overrideBuiltinModules = true } = {} as Options
+  { overrideBuiltinModules = true } = {} as Options
 ): IStyleItem[] => {
   const {
     alias,
@@ -32,7 +23,7 @@ export default (
     unicode,
   } = styleApi;
 
-  const isAliasModule = hasAlias(aliases || []);
+  const isAliasModule = not(isNodeModule);
 
   return [
     // import "foo"