Allow to run css language server headless

extensions/css-language-features/server/src/customData.ts

@@ -3,48 +3,36 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-import { CSSDataV1, ICSSDataProvider } from 'vscode-css-languageservice';
-import * as fs from 'fs';
+import { ICSSDataProvider, newCSSDataProvider } from 'vscode-css-languageservice';
+import { RequestService } from './requests';
 
-export function getDataProviders(dataPaths: string[]): ICSSDataProvider[] {
-	const providers = dataPaths.map(p => {
-		if (fs.existsSync(p)) {
-			const data = parseCSSData(fs.readFileSync(p, 'utf-8'));
-			return {
-				provideProperties: () => data.properties || [],
-				provideAtDirectives: () => data.atDirectives || [],
-				providePseudoClasses: () => data.pseudoClasses || [],
-				providePseudoElements: () => data.pseudoElements || []
-			};
-		} else {
-			return {
-				provideProperties: () => [],
-				provideAtDirectives: () => [],
-				providePseudoClasses: () => [],
-				providePseudoElements: () => []
-			};
+export function fetchDataProviders(dataPaths: string[], requestService: RequestService): Promise<ICSSDataProvider[]> {
+	const providers = dataPaths.map(async p => {
+		try {
+			const content = await requestService.getContent(p);
+			return parseCSSData(content);
+		} catch (e) {
+			return newCSSDataProvider({ version: 1 });
 		}
 	});
 
-	return providers;
+	return Promise.all(providers);
 }
 
-function parseCSSData(source: string): CSSDataV1 {
+function parseCSSData(source: string): ICSSDataProvider {
 	let rawData: any;
 
 	try {
 		rawData = JSON.parse(source);
 	} catch (err) {
-		return {
-			version: 1
-		};
+		return newCSSDataProvider({ version: 1 });
 	}
 
-	return {
+	return newCSSDataProvider({
 		version: 1,
 		properties: rawData.properties || [],
 		atDirectives: rawData.atDirectives || [],
 		pseudoClasses: rawData.pseudoClasses || [],
 		pseudoElements: rawData.pseudoElements || []
-	};
+	});
 }