Function isMutableArrayOrTuple

test/fixtures/snapshot/typescript.js:67411–67413

(type)

            return isArrayType(type) || isTupleType(type);
        }
        function isMutableArrayOrTuple(type) {
            return isArrayType(type) && !isReadonlyArrayType(type) || isTupleType(type) && !type.target.readonly;
        }
        function getElementTypeOfArrayType(type) {
            return isArrayType(type) ? getTypeArguments(type)[0] : undefined;
        }