Function getIterationTypesOfIterableSlow

test/fixtures/snapshot/typescript.js:83347–83361

* Gets the *yield*, *return*, and *next* types of an `Iterable`-like or `AsyncIterable`-like * type from its members. * * If we successfully found the *yield*, *return*, and *next* types, an `IterationTypes` * record is returned. Otherwise, `noIterationTypes` is r

(type, resolver, errorNode)

         * `getIterationTypesOfIterable` instead.
         */
        function getIterationTypesOfIterableSlow(type, resolver, errorNode) {
            var _a;
            var method = getPropertyOfType(type, getPropertyNameForKnownSymbolName(resolver.iteratorSymbolName));
            var methodType = method && !(method.flags & 16777216 /* SymbolFlags.Optional */) ? getTypeOfSymbol(method) : undefined;
            if (isTypeAny(methodType)) {
                return setCachedIterationTypes(type, resolver.iterableCacheKey, anyIterationTypes);
            }
            var signatures = methodType ? getSignaturesOfType(methodType, 0 /* SignatureKind.Call */) : undefined;
            if (!ts.some(signatures)) {
                return setCachedIterationTypes(type, resolver.iterableCacheKey, noIterationTypes);
            }
            var iteratorType = getIntersectionType(ts.map(signatures, getReturnTypeOfSignature));
            var iterationTypes = (_a = getIterationTypesOfIterator(iteratorType, resolver, errorNode)) !== null && _a !== void 0 ? _a : noIterationTypes;
            return setCachedIterationTypes(type, resolver.iterableCacheKey, iterationTypes);
        }
        function reportTypeNotIterableError(errorNode, type, allowAsyncIterables) {
            var message = allowAsyncIterables
                ? ts.Diagnostics.Type_0_must_have_a_Symbol_asyncIterator_method_that_returns_an_async_iterator