Function includeUndefinedInIndexSignature

test/fixtures/snapshot/typescript.js:69702–69708

(type)

                errorType;
        }
        function includeUndefinedInIndexSignature(type) {
            if (!type)
                return type;
            return compilerOptions.noUncheckedIndexedAccess ?
                getUnionType([type, undefinedType]) :
                type;
        }
        function getTypeOfDestructuredSpreadExpression(type) {
            return createArrayType(checkIteratedTypeOrElementType(65 /* IterationUse.Destructuring */, type, undefinedType, /*errorNode*/ undefined) || errorType);
        }