feat: Allow embedded languages to utilise Svelte Intellisense in VSCode

packages/language-server/src/plugins/typescript/DocumentSnapshot.ts

@@ -266,7 +266,7 @@ function preprocessSvelteFile(document: Document, options: SvelteSnapshotOptions
 export class SvelteDocumentSnapshot implements DocumentSnapshot {
     private mapper?: DocumentMapper;
     private lineOffsets?: number[];
-    private url = pathToUrl(this.filePath);
+    private url = this.fileUrl;
 
     version = this.parent.version;
     isSvelte5Plus = Number(this.svelteVersion?.split('.')[0]) >= 5;
@@ -281,7 +281,11 @@ export class SvelteDocumentSnapshot implements DocumentSnapshot {
         private readonly exportedNames: IExportedNames,
         private readonly tsxMap?: EncodedSourceMap,
         private readonly htmlAst?: TemplateNode
-    ) {}
+    ) { }
+
+    get fileUrl() {
+        return this.parent.getURL() || '';
+    }
 
     get filePath() {
         return this.parent.getFilePath() || '';

packages/language-server/src/utils.ts

@@ -28,14 +28,18 @@ export function clamp(num: number, min: number, max: number): number {
 
 export function urlToPath(stringUrl: string): string | null {
     const url = URI.parse(stringUrl);
-    if (url.scheme !== 'file') {
+    if (url.scheme === 'http' || url.scheme === 'https') {
         return null;
     }
     return url.fsPath.replace(/\\/g, '/');
 }
 
-export function pathToUrl(path: string) {
-    return URI.file(path).toString();
+export function pathToUrl(path: string, scheme?: string) {
+    const baseUri = URI.file(path);
+    if (scheme) {
+        return baseUri.with({ scheme: scheme }).toString();
+    }
+    return baseUri.toString();
 }
 
 /**

packages/svelte-vscode/src/extension.ts

@@ -151,7 +151,7 @@ export function activateSvelteLanguageServer(context: ExtensionContext) {
     }
 
     const clientOptions: LanguageClientOptions = {
-        documentSelector: [{ scheme: 'file', language: 'svelte' }],
+        documentSelector: [{ scheme: '*', language: 'svelte' }],
         revealOutputChannelOn: RevealOutputChannelOn.Never,
         synchronize: {
             // TODO deprecated, rework upon next VS Code minimum version bump