Function getParameterCount

test/fixtures/snapshot/typescript.js:77594–77603

(signature)

        // the parameter count of (x: number, ...args: [number, ...string[], boolean])) is also 3. In the
        // latter example, the effective rest type is [...string[], boolean].
        function getParameterCount(signature) {
            var length = signature.parameters.length;
            if (signatureHasRestParameter(signature)) {
                var restType = getTypeOfSymbol(signature.parameters[length - 1]);
                if (isTupleType(restType)) {
                    return length + restType.target.fixedLength - (restType.target.hasRestElement ? 0 : 1);
                }
            }
            return length;
        }
        function getMinArgumentCount(signature, flags) {
            var strongArityForUntypedJS = flags & 1 /* MinArgumentCountFlags.StrongArityForUntypedJS */;
            var voidIsNonOptional = flags & 2 /* MinArgumentCountFlags.VoidIsNonOptional */;