Function createFinalArrayType

test/fixtures/snapshot/typescript.js:70000–70006

(elementType)

            return isTypeSubsetOf(elementType, evolvingArrayType.elementType) ? evolvingArrayType : getEvolvingArrayType(getUnionType([evolvingArrayType.elementType, elementType]));
        }
        function createFinalArrayType(elementType) {
            return elementType.flags & 131072 /* TypeFlags.Never */ ?
                autoArrayType :
                createArrayType(elementType.flags & 1048576 /* TypeFlags.Union */ ?
                    getUnionType(elementType.types, 2 /* UnionReduction.Subtype */) :
                    elementType);
        }
        // We perform subtype reduction upon obtaining the final array type from an evolving array type.
        function getFinalArrayType(evolvingArrayType) {
            return evolvingArrayType.finalArrayType || (evolvingArrayType.finalArrayType = createFinalArrayType(evolvingArrayType.elementType));