gRPC MCP Server

export interface CancellationToken { readonly isCancellationRequested: boolean; } const Cancelled: CancellationToken = { isCancellationRequested: true, }; class Token implements CancellationToken { private _isCancelled: boolean = false; get isCancellationRequested(): boolean { return this._isCancelled; } cancel(): void { this._isCancelled = true; } } export class CancellationTokenSource { private _token?: CancellationToken = undefined; get token(): CancellationToken { if (!this._token) { this._token = new Token(); } return this._token; } cancel(): void { if (!this._token) { this._token = Cancelled; } else if (this._token instanceof Token) { this._token.cancel(); } } }