Source-driven development

Implement against primary sources, not memory. Confirm behavior in official docs, specs, or upstream code before committing to an approach.

Workflow

List claims: identify framework or library claims in the task (API shape, lifecycle, limits, defaults).
Find primary sources: prefer official docs, language specs, maintainers' references, and upstream source.
Pin versions: verify docs match the version used in this repo.
Implement to source: choose patterns and APIs that the source explicitly supports.
Record evidence: capture links or short notes in PR/issue comments when behavior is non-obvious.
Verify locally: run tests or a minimal reproduction proving the source-backed behavior.