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value.v : value).then(\n        function (arg) {\n          if (overloaded) {\n            // Overloaded yield requires calling into the generator twice:\n            //  - first we get the iterator result wrapped in a promise\n            //    (the gen[key](arg) call above)\n            //  - then we await it (the Promise.resolve call above)\n            //  - then we give the result back to the iterator, so that it can:\n            //    * if it was an await, use its result\n            //    * if it was a yield*, possibly return the `done: true` signal\n            //      so that yield* knows that the iterator is finished.\n            //      This needs to happen in the second call, because in the\n            //      first one `done: true` was hidden in the promise and thus\n            //      not visible to the (sync) yield*.\n            //      The other part of this implementation is in asyncGeneratorDelegate.\n            var nextKey = key === \"return\" ? \"return\" : \"next\";\n            if (!value.k || arg.done) {\n              // await or end of yield*\n              return resume(nextKey, arg);\n            } else {\n              // yield*, not done\n              arg = gen[nextKey](arg).value;\n            }\n          }\n\n          settle(result.done ? 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