Kit Langton
18 lines
986 B
Markdown
18 lines
986 B
Markdown
# Effect simplification rules
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The dedicated config scans both TypeScript and TSX with equivalent rules. The
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generic ast-grep config intentionally does not load these rules.
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Ignored callback parameters are supported only when they are simple ASCII
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underscore-prefixed identifiers such as `_`, `_error`, or `_value`, optionally
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with a type annotation. A rule reports the callback only when the exact target
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subtree contains no underscore-prefixed identifier-like node, proving the
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binding is unused without relying on unavailable TypeScript scope resolution.
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This proof is intentionally conservative. Destructured, defaulted, rest,
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optional, non-underscore, and Unicode parameters are excluded. A nested binding
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or property whose name starts with `_` also suppresses the diagnostic, even when
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it does not reference the callback parameter. Regular-function callbacks are
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excluded when their target captures `this`, `arguments`, or a meta-property such
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as `new.target` or `import.meta`.
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