use async module loading for typescript, #33141

extensions/extension-editing/src/extension.ts

@@ -25,20 +25,20 @@ const _linkProvider = new class implements vscode.DocumentLinkProvider {
 	private _cachedResult: { key: string; links: vscode.DocumentLink[] };
 	private _linkPattern = /[^!]\[.*?\]\(#(.*?)\)/g;
 
-	provideDocumentLinks(document: vscode.TextDocument, token: vscode.CancellationToken): vscode.DocumentLink[] {
+	async provideDocumentLinks(document: vscode.TextDocument, token: vscode.CancellationToken): Promise<vscode.DocumentLink[]> {
 		const key = `${document.uri.toString()}@${document.version}`;
 		if (!this._cachedResult || this._cachedResult.key !== key) {
-			const links = this._computeDocumentLinks(document);
+			const links = await this._computeDocumentLinks(document);
 			this._cachedResult = { key, links };
 		}
 		return this._cachedResult.links;
 	}
 
-	private _computeDocumentLinks(document: vscode.TextDocument): vscode.DocumentLink[] {
+	private async _computeDocumentLinks(document: vscode.TextDocument): Promise<vscode.DocumentLink[]> {
 
 		const results: vscode.DocumentLink[] = [];
 		const text = document.getText();
-		const lookUp = ast.createNamedNodeLookUp(text);
+		const lookUp = await ast.createNamedNodeLookUp(text);
 
 		this._linkPattern.lastIndex = 0;
 		let match: RegExpMatchArray;
@@ -69,7 +69,9 @@ namespace ast {
 		(dottedName: string): number;
 	}
 
-	export function createNamedNodeLookUp(str: string): NamedNodeLookUp {
+	export async function createNamedNodeLookUp(str: string): Promise<NamedNodeLookUp> {
+
+		const ts = await import('typescript');
 
 		const sourceFile = ts.createSourceFile('fake.d.ts', str, ts.ScriptTarget.Latest);