Replay History throws exception ` RangeError: Start offset -2140326304 is outside the bounds of the buffer`

Community Support
1

We have a script to Replay History to ensure we don’t merge non-deterministic changes.

But, sometimes, we get this error:

2025-07-31T14:38:26.367Z [INFO] Workflow bundle created {
  sdkComponent: 'worker',
  taskQueue: 'fake_replay_queue-134',
  size: '6.85MB'
}
2025-07-31T14:38:26.419Z [INFO] Worker state changed {
  sdkComponent: 'worker',
  taskQueue: 'fake_replay_queue-134',
  state: 'RUNNING'
}
/home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/source-map@0.7.4/node_modules/source-map/lib/source-map-consumer.js:313
    const mappingsBuf = new Uint8Array(this._wasm.exports.memory.buffer, mappingsBufPtr, size);
                        ^

RangeError: Start offset -2140326304 is outside the bounds of the buffer
    at new Uint8Array (<anonymous>)
    at BasicSourceMapConsumer._parseMappings (/home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/source-map@0.7.4/node_modules/source-map/lib/source-map-consumer.js:313:25)
    at BasicSourceMapConsumer._getMappingsPtr (/home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/source-map@0.7.4/node_modules/source-map/lib/source-map-consumer.js:298:12)
    at /home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/source-map@0.7.4/node_modules/source-map/lib/source-map-consumer.js:493:14
    at Object.withMappingCallback (/home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/source-map@0.7.4/node_modules/source-map/lib/wasm.js:95:11)
    at BasicSourceMapConsumer.originalPositionFor (/home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/source-map@0.7.4/node_modules/source-map/lib/source-map-consumer.js:491:16)
    at /home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/@temporalio+worker@1.11.7_@swc+helpers@0.5.17/node_modules/@temporalio/worker/lib/workflow/vm-shared.js:147:51
    at Array.map (<anonymous>)
    at Error.prepareStackTrace (/home/runner/_work/veed-micro-ts/veed-micro-ts/node_modules/.pnpm/@temporalio+worker@1.11.7_@swc+helpers@0.5.17/node_modules/@temporalio/worker/lib/workflow/vm-shared.js:141:43)
    at prepareStackTraceCallback (node:internal/errors:150:29)

Node.js v22.17.1
 ELIFECYCLE  Command failed with exit code 1.

Wonder if this is a known issue?

Packages we’re using:

  '@temporalio/activity': 1.11.7
  '@temporalio/client': 1.11.7
  '@temporalio/worker': 1.11.7
  '@temporalio/workflow': 1.11.7
  '@temporalio/testing': 1.11.7
  '@temporalio/proto': 1.11.7
  '@temporalio/common': 1.11.7

Thanks in advance.

2

Did you ever resolve this?

I am seeing the exact same stack trace with the exact same version of the packages you’re using. It’s worth noting that we have an existing script that tests replaying histories that does not see this issue, but I am seeing it during a re-write trying to run with more concurrency. If I discover anything, I’ll report back.

3

Hi @AustinTildei

I think this is the same issue [Bug] RangeError: "length" is outside of buffer bounds · Issue #1510 · temporalio/sdk-typescript · GitHub , it should be fixed in the latest version.

Antonio