Function emulator

e2e/selfhost/mcp-enterprise-managed-auth.test.ts:85–92

(service: "okta" | "mcp")

 *  shipped in `@executor-js/emulate` 0.14.0, and the npm package is the version
 *  this checkout pins — a hosted instance is whatever was last deployed. */
const emulator = (service: "okta" | "mcp") =>
  Effect.acquireRelease(
    Effect.gen(function* () {
      const port = yield* availablePort;
      return yield* Effect.promise(() => createEmulator({ service, port }));
    }),
    (instance: Emulator) => Effect.promise(() => instance.close()).pipe(Effect.ignore),
  );

const requireString = (value: string | undefined | null, what: string): string => {
  if (!value) throw new Error(`emulator returned no ${what}`);