Function recorder

packages/app/src/preload-error.test.ts:20–59

(options: {
  readonly serverUp: readonly boolean[];
  readonly reloadFlag?: boolean;
  readonly target?: EventTarget;
})

}

const recorder = (options: {
  readonly serverUp: readonly boolean[];
  readonly reloadFlag?: boolean;
  readonly target?: EventTarget;
}): Recorder => {
  const calls = {
    probes: 0,
    disconnected: 0,
    reloads: 0,
    reported: [] as unknown[],
    flagWrites: 0,
  };
  let flag = options.reloadFlag ?? false;
  return {
    calls,
    env: {
      target: options.target ?? new EventTarget(),
      probeServer: async () => {
        const answer = options.serverUp[calls.probes] ?? options.serverUp.at(-1) ?? false;
        calls.probes += 1;
        return answer;
      },
      showDisconnected: () => {
        calls.disconnected += 1;
      },
      reload: () => {
        calls.reloads += 1;
      },
      report: (error) => {
        calls.reported.push(error);
      },
      readReloadFlag: () => flag,
      writeReloadFlag: () => {
        flag = true;
        calls.flagWrites += 1;
      },
      delay: async () => {},
    },
  };
};

// oxlint-disable-next-line executor/no-error-constructor -- test boundary: reproduces the exact TypeError the browser hands to vite:preloadError
const chunkError = new TypeError(