mizusato 0ec8d7fa1d fix, map() for observable 5 lat temu
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Iterator.k 625f2e3214 add test for async iterator 5 lat temu
Postpone.k 20bdf3f899 fix bugs, add test for promise 5 lat temu
Promise.k 0ec8d7fa1d fix, map() for observable 5 lat temu
Throw.k 20bdf3f899 fix bugs, add test for promise 5 lat temu