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eslint

  • TypeScript on a JavaScript codebase, one file at a time

    Deep dive10 min read

    3.7 shipped optional chaining in November and the objection got smaller. allowJs, checkJs and a per-file opt-in — and strictNullChecks, which is the flag that pays.

  • ESLint on staged files only, or the hook gets skipped

    Note2 min read

    Lint failures arriving from CI ten minutes after a push are a context switch for something a machine could have fixed before the commit existed — and a…

  • The rules of hooks are enforceable, so enforce them

    Note2 min read

    Hooks are matched to their state by call order, so calling one conditionally shifts every subsequent hook onto the wrong slot — and the failure is data appearing…

  • The react-hooks ESLint plugin is not optional

    Note1 min read

    Hooks are matched to their state by call order and closures capture by value, and both failure modes are silent — which is exactly the shape of problem…

  • ESLint as a pre-commit hook, not a CI surprise

    Note2 min read

    Lint failures arriving from CI ten minutes after a push are a context switch for something a machine could have fixed automatically before the commit existed. Running only…