Testing: investigate removing PUT /lambda-endpoint from the web runner
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 55/100
- Issue type
- Refactor
- Clarity
- Mostly clear
- Activity status
- Active
- Tech stack
- javascript, python
- Domain
- devtools, testing-qa
Research direction
Start at the dex-local-runner start-server entry point and inspect the implementation of PUT /lambda-endpoint, then search for callers in the SDK, testing library, and conformance tests. Done means either removing the route with the conformance tests passing, or documenting a concrete consumer and why the route must remain.
Written by the indexing model from the issue text.
Description
The web runner (dex-local-runner start-server) exposes PUT /lambda-endpoint. It repoints the Lambda client the runner uses to invoke handlers.
No caller is known. sam passes --lambda-endpoint on the runner's command line at startup and never calls the route. The JS SDK, the JS testing library and the conformance tests do not call it. The route is not documented. It arrived in the testing package on 2025-10-07 with no consumer named.
After #731 the route moves the endpoint only. The runner emulates one region, fixed at startup, and a RegionName other than that region is rejected with InvalidParameterValueException.
Proposal: remove the route, or document who needs it and why. If you call this route, please say so here.
- Dominant language
- Python
- Stars
- 54
- Forks
- 24
- Avg merge
- 1d 12h
- Merged PRs (30d)
- 37
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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