extensions/typescript-language-features/src/tsServer/bufferSyncSupport.ts/BufferSyncSupport/getErr
class BufferSyncSupport:	public getErr(resources: readonly vscode.Uri[]): any {
		const handledResources = resources.filter(resource => this.handles(resource));
		if (!handledResources.length) {
			return;
		}

		for (const resource of handledResources) {
			this.pendingDiagnostics.set(resource, Date.now());
		}

		this.triggerDiagnostics();
	}