Task pack

Stop the Express error handler from leaking internal error text to HTTP clients

What you are looking at

This is a sparepack: a redacted slice of a private repository, containing the contract and nothing else. The business logic is not here and is not supposed to be.

Interfaces (1)

Signatures and types only. Every function body throws sparepack stub: not implemented. Your job is to replace those bodies.

• src/middleware/errorMiddleware.js

Acceptance tests (1)

These are the specification. Not a suggestion, not a starting point — if they pass, the task is done. If something about the intended behaviour is not expressed in them, say so rather than guessing.

• task-spec/error-handler.test.mjs

Working on this

1. Make the acceptance tests pass.
2. Do not weaken a test to make it pass. If a test looks wrong, raise it — that is useful feedback and it is the requester's call, not yours.
3. Deliver a patch against this pack's layout.

What is not here

Anything the requester did not explicitly list. Missing context is not an oversight to route around — if you cannot complete the task without seeing more, ask. Reconstructing the surrounding system by guessing produces code that fits nothing.

Running the tests

node --test task-spec/*.test.mjs
# or
npm test

Node 22 or newer. No dependencies to install — the tests use node:test and a hand-rolled res double, so there is no Express and no network.

All nine tests fail right now. That is the starting line, not a problem with the pack.

Delivering

Fork this repository, make the tests pass, open a pull request here, and comment /done <your-PR-url> on the task issue in spare-cycles.

Please do not weaken a test to make it pass. If one looks wrong, say so on the PR — that is useful and it is the requester's call.