Build plugin/config relocation
ESLint v10 removed context.getSourceCode rule context sourceCode API TypeError custom rule
A private plugin crashes with TypeError only under ESLint 10.
Agent Quick Fix
The old package/config name is syntactically valid, but current tool packaging and discovery rules live in external release documentation.
Product: ESLint
Current-contract area: Custom rule uses removed context/sourceCode API
Likely root cause: A private plugin crashes with TypeError only under ESLint 10.
Repair direction: Verifier checks the current package identity/config format and a real transformed output. Check the exact intended lint findings, not merely process exit 0.Validation Status
Codex searched organically in the validation run. No no-web counterfactual is attached to this page yet.
Symptom
A private plugin crashes with TypeError only under ESLint 10.
Why This Happens
The old package/config name is syntactically valid, but current tool packaging and discovery rules live in external release documentation.
Verification
Verifier checks the current package identity/config format and a real transformed output. Check the exact intended lint findings, not merely process exit 0.Common Wrong Fixes
- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.
Codex Search Keywords
These are the search terms observed in a neutral Codex validation run for this failure shape.
ESLint v10 removed context.getSourceCode rule context sourceCode API TypeError custom rule
site:eslint.org context.getSourceCode deprecated SourceCode property custom rules
ESLint custom rules context sourceCode getSourceCode
https://eslint.org/docs/latest/extend/custom-rules
'Removal of deprecated context members' in https://eslint.org/docs/latest/use/migrate-to-10.0.0