Basic Async Utilities

[daedalus28]

• Add Async methods: flowAsync, flurryAsync, promisedProps, mapAsync, mapValuesAsync
• Add flatMapIndexed, throwsError

Fixes #107

[decrapifier]

Fails

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Your PR has 8 failed browser tests: Suite: Async Functions Description: flurryAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 run@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3911:29 base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3924:31 flush@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:1209:11 Suite: Async Functions Description: mapAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 run@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3911:29 base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3924:31 flush@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:1209:11 Suite: Async Functions Description: mapValuesAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 run@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3911:29 base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3924:31 flush@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:1209:11 Suite: Async Functions Description: mapAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 promiseReactionJob@[native code] Suite: Async Functions Description: mapValuesAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 promiseReactionJob@[native code] Suite: Async Functions Description: flowAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 run@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3911:29 base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3924:31 flush@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:1209:11 Suite: Async Functions Description: flurryAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 run@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3911:29 base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3924:31 flush@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:1209:11 Suite: Async Functions Description: mapValuesAsync Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. tryCatcher@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:19751:28 _settlePromiseFromHandler@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17773:35 _settlePromise@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17830:43 _settlePromise0@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17875:24 _settlePromises@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:17954:33 _drainQueue@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14683:31 _drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14693:21 drainQueues@base/test/async.spec.js?1c3843c03c656312138d68e69be42c419037d071:14567:26 run@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3911:29 base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:3924:31 flush@base/node_modules/babel-polyfill/dist/polyfill.js?03b9323c0501aae92009b27cf63cea3f4754b408:1209:11

Generated by 🚫 dangerJS

[daedalus28]

The big open question here is how deep we want to go on this because mapAsync opens up the door for async everything. It's useful in practice, but as mentioned in #84 it might make more sense as a bluebird-fp lib.

[daedalus28]

A potential alternative: https://runkit.com/daedalus28/flexible-flow-async

The main idea there is to avoid needing things like mapValuesAsync (and thus, eventually everySingleMethodAsync) by making the async flow smart enough to automatically leverage the basic primitives during the composition (e.g. automatically using Promise.all or Promise.props).

[daedalus28]

Closing in favor of #411