asyncjs: add then, catch for promise pipelining#16871
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Changelog. |
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@timotheecour Approx ETA ?, is doable?, is needed for #12531 🙂 |
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@juancarlospaco ok, getting back to this, thanks for the ping... |
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...was just asking, but Ok 🙂 |
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@juancarlospaco PTAL
also, IMO it's better usually to add review comments in the file view instead of the main PR thread so they remain threaded and so I can mark each of them as individually resolved; maybe except for important comments that should garner more attention from other reviewers |
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how come CI didn't run in azure? |
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then, catchthen, catch for promise pipelining
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TODO: followup needed
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* asyncjs: add then * improve tests, changelog, API * fix cryptic windows error: The parameter is incorrect * address comments
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…g futures (nim-lang#17189) * followup nim-lang#16871 asyncjs.then: allow pipelining procs returning futures * rename test files where they belong * fix tests * tests for then with `onReject` callback * rename test file containing fail to avoid messing with grep * address comments * cleanup * un-disable 1 test
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* asyncjs: add then * improve tests, changelog, API * fix cryptic windows error: The parameter is incorrect * address comments
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…g futures (nim-lang#17189) * followup nim-lang#16871 asyncjs.then: allow pipelining procs returning futures * rename test files where they belong * fix tests * tests for then with `onReject` callback * rename test file containing fail to avoid messing with grep * address comments * cleanup * un-disable 1 test
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TODO: followup needed
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prerequisite for things like
jsfetch#12531note
--unhandled-rejections=strictnode flag is now passed in testament for nodejs tests, so thattests/js/tasyncjs_fail.nimreturns exit code != 0 (and so that this test succeeds). This flag is explained in https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode and is the default starting with node >= 15.0.0with this flag, for nodejs < 15.0.0 (all except freebsd CI), you'd get exit code 0 and this message:
(Use
node --trace-warnings ...to show where the warning was created)(node:72796) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag
--unhandled-rejections=strict(see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 3)(node:72796) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
I'm hiding the new API under
nimExperimentalAsyncjsThen, refsnimExperimentalFoofor experimental modules/APIs timotheecour/Nim#575I'm using this pattern cross reference comments via a GUID-like pattern, eg:
D20210217T221607timotheecour/Nim#596 for cross referencing an explanationlinks
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/catch etc
future work
=> upgrade nodejs; add nimCiSystemInfo on azure/github CI #18003
--passnodemaybe), which we'd use as follows:nim r -b:js --lib:lib -d:nodejs --passnode:--unhandled-rejections=strict tests/js/tasyncjs_fail.nimafter which i can mark expected exitcode as != 0 for
tests/js/tasyncjs_fail.nimit'd be handled here: in compiler/nim.nim near
execExternalProgram(conf, cmdPrefix & output.quoteShell & ' ' & conf.arguments)