HTTP method casing mishandled for non-standard verbsAPI & Request FlowEasyPreparing

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Incident Dossier

HTTP method casing mishandled for non-standard verbs

A Request constructor accepts a method option. The library normalizes the six standard HTTP methods (DELETE, GET, HEAD, OPTIONS, POST, PUT) to uppercase regardless of input casing, while preserving every other method string exactly as supplied. Currently, the casing rule applies too broadly, altering method names that should pass through untouched.

Initial failing signalNon-standard method casing alteredExpected behavior: Standard methods (DELETE, GET, HEAD, OPTIONS, POST, PUT) normalize to uppercase regardless of input casing; any other method string is preserved exactly as supplied. · actual behavior: Non-standard method strings such as 'patch' and 'chicken' are being transformed (e.g., uppercased) instead of preserved exactly as written.

Progress

1Reproduce the bugRun checks

2Edit the fixOpen

3Pass checksOpen

4Submit fixOpen

Reproduction Steps

Install dependencies in the repo snapshot.
Run the visible regression test command.
Trace from the failing test into the changed runtime source files.

Focus Mode

Start

test/request.js

Likely area

test/request.js

Repo scale

53 files
Real node-fetch/node-fetch repo snapshot

Challenge Coach

Hints reveal broad direction first, then narrow toward the suspect path without showing hidden tests or exact solution code.

TopicAPI & Request Flow

DifficultyEasy

Est. time20 min

Workspacepreparing

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Initial failing signalBaseline

Non-standard method casing altered

Expected behaviorStandard methods (DELETE, GET, HEAD, OPTIONS, POST, PUT) normalize to uppercase regardless of input casing; any other method string is preserved exactly as supplied.

Actual behaviorNon-standard method strings such as 'patch' and 'chicken' are being transformed (e.g., uppercased) instead of preserved exactly as written.

Related checkInstall dependencies

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