[scss] Path resolver to include partial files support (#373)

* Support partials on path resolver

* Inline SCSS extension removal in target URI parsing

Author: Dyhagho Briceño

src/services/scssNavigation.ts

@@ -44,8 +44,8 @@ export class SCSSNavigation extends CSSNavigation {
 }
 
 function toPathVariations(target: string): DocumentUri[] {
-	// No variation for links that ends with suffix
-	if (target.endsWith('.scss') || target.endsWith('.css')) {
+	// No variation for links that ends with .css suffix
+	if (target.endsWith('.css')) {
 		return [target];
 	}
 
@@ -54,7 +54,7 @@ function toPathVariations(target: string): DocumentUri[] {
 		return [target + 'index.scss', target + '_index.scss'];
 	}
 
-	const targetUri = URI.parse(target);
+	const targetUri = URI.parse(target.replace(/\.scss$/, ''));
 	const basename = Utils.basename(targetUri);
 	const dirname = Utils.dirname(targetUri);
 	if (basename.startsWith('_')) {

src/test/scss/scssNavigation.test.ts

@@ -154,6 +154,10 @@ suite('SCSS - Navigation', () => {
 				{ range: newRange(8, 13), target: getDocumentUri('./underscore/_foo.scss') }
 			]);
 
+			await assertDynamicLinks(getDocumentUri('./underscore/index.scss'), `@import 'foo.scss'`, [
+				{ range: newRange(8, 18), target: getDocumentUri('./underscore/_foo.scss') }
+			]);
+
 			await assertDynamicLinks(getDocumentUri('./both/index.scss'), `@import 'foo'`, [
 				{ range: newRange(8, 13), target: getDocumentUri('./both/foo.scss') }
 			]);