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anomalyco_opencode/script/ast-grep/effect-simplifications/rules/no-effect-flat-map-suspend.yml
T
2026-08-21 19:48:27 +00:00

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id: no-effect-flat-map-suspend
language: TypeScript
message: Use effect-form Effect.andThen when the previous value is ignored.
severity: error
rule:
all:
- any:
- pattern: Effect.flatMap($$$SELF, () => Effect.suspend($THUNK))
- pattern: Effect.flatMap($$$SELF, () => { return Effect.suspend($THUNK) })
- pattern: Effect.flatMap($$$SELF, ($IGNORED) => Effect.suspend($IGNORED_THUNK))
- pattern: Effect.flatMap($$$SELF, ($IGNORED) => { return Effect.suspend($IGNORED_THUNK) })
- pattern: Effect.flatMap($$$SELF, $IGNORED => Effect.suspend($IGNORED_THUNK))
- pattern: Effect.flatMap($$$SELF, $IGNORED => { return Effect.suspend($IGNORED_THUNK) })
- pattern: "Effect.flatMap($$$SELF, ($IGNORED: $_TYPE) => Effect.suspend($IGNORED_THUNK))"
- pattern: "Effect.flatMap($$$SELF, ($IGNORED: $_TYPE) => { return Effect.suspend($IGNORED_THUNK) })"
- pattern: Effect.flatMap($$$SELF, function () { return Effect.suspend($FUNCTION_THUNK) })
- pattern: Effect.flatMap($$$SELF, function ($FUNCTION_IGNORED) { return Effect.suspend($FUNCTION_IGNORED_THUNK) })
- pattern: "Effect.flatMap($$$SELF, function ($FUNCTION_IGNORED: $_TYPE) { return Effect.suspend($FUNCTION_IGNORED_THUNK) })"
- not:
pattern: Effect.flatMap($_FIRST, $_SECOND, $$$REST)
constraints:
THUNK:
kind: arrow_function
IGNORED:
regex: ^_[A-Za-z0-9_$]*(?:\s*:\s*.+)?$
IGNORED_THUNK:
all:
- kind: arrow_function
- not:
has:
regex: ^_[A-Za-z0-9_$]*$
stopBy: end
FUNCTION_THUNK:
all:
- kind: arrow_function
- not:
has:
any:
- regex: ^arguments$
- kind: this
- kind: meta_property
stopBy: end
FUNCTION_IGNORED:
regex: ^_[A-Za-z0-9_$]*(?:\s*:\s*.+)?$
FUNCTION_IGNORED_THUNK:
all:
- kind: arrow_function
- not:
has:
any:
- regex: ^(_[A-Za-z0-9_$]*|arguments)$
- kind: this
- kind: meta_property
stopBy: end