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Function: getSignatureParameterTypeAt()

function getSignatureParameterTypeAt(
    options: Readonly<{
        checker: ts.TypeChecker;
        index: number;
        location: ts.Node;
        signature: null | ts.Signature | undefined;
    }>
): Type | undefined;

Defined in: _internal/typed-rule.ts:247

Resolve the type of a signature parameter by index.

Parametersโ€‹

optionsโ€‹

Readonly<{ checker: ts.TypeChecker; index: number; location: ts.Node; signature: null | ts.Signature | undefined; }>

Signature parameter lookup options.

  • checker: TypeScript type checker.
  • index: Parameter index in the signature.
  • location: Source location used for contextual type lookup.
  • signature: Candidate call signature.

Returnsโ€‹

Type | undefined

Parameter type when available; otherwise undefined.