denoland/deno · error · TypeError

'Deno.AtomicOperation' is not a promise: did you forget to c

Error message

'Deno.AtomicOperation' is not a promise: did you forget to call 'commit()'

What it means

Error "'Deno.AtomicOperation' is not a promise: did you forget to call 'commit()'" thrown in denoland/deno.

Source

Thrown at ext/kv/01_db.ts:596

      opts?.keysIfUndelivered ?? [],
      opts?.backoffSchedule ?? null,
    ]);
    return this;
  }

  async commit(): Promise<Deno.KvCommitResult | Deno.KvCommitError> {
    const versionstamp = await doAtomicWriteInPlace(
      this.#rid,
      this.#checks,
      this.#mutations,
      this.#enqueues,
    );
    if (versionstamp === null) return { ok: false };
    return { ok: true, versionstamp };
  }

  then() {
    throw new TypeError(
      "'Deno.AtomicOperation' is not a promise: did you forget to call 'commit()'",
    );
  }

  [SymbolFor("Deno.privateCustomInspect")](inspect, inspectOptions) {
    const operations = [];

    // Format checks
    for (let i = 0; i < this.#checks.length; ++i) {
      const check = this.#checks[i];
      const key = check[0];
      const versionstamp = check[1];
      const keyStr = inspect(key, inspectOptions);
      const versionstampStr = versionstamp === null
        ? "null"
        : `"${versionstamp}"`;
      ArrayPrototypePush(
        operations,

View on GitHub (pinned to 89f33cbef2)

When it happens

Trigger: Thrown at ext/kv/01_db.ts:596 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of denoland/deno@89f33cbef2 (2026-08-16). Data as JSON: /api/errors/aac24780b8655917. Report an issue: GitHub.