For consumers that aren't interested in *why* a `statSync` call failed,
allocating and throwing an exception is an unnecessary expense. This PR
adds an option that will cause it to return `undefined` in such cases
instead.
As a motivating example, the JavaScript & TypeScript language service
shared between Visual Studio and Visual Studio Code is stuck with
synchronous file IO for architectural and backward-compatibility
reasons. It frequently needs to speculatively check for the existence
of files and directories that may not exist (and cares about file vs
directory, so `existsSync` is insufficient), but ignores file system
entries it can't access, regardless of the reason.
Benchmarking the language service is difficult because it's so hard to
get good coverage of both code bases and user behaviors, but, as a
representative metric, we measured batch compilation of a few hundred
popular projects (by star count) from GitHub and found that, on average,
we saved about 1-2% of total compilation time. We speculate that the
savings could be even more significant in interactive (language service
or watch mode) scenarios, where the same (non-existent) files need to be
polled over and over again. It's not a huge improvement, but it's a
very small change and it will affect a lot of users (and CI runs).
For reference, our measurements were against `v12.x` (3637a061a at the
time) on an Ubuntu Server desktop with an SSD.
PR-URL: https://github.com/nodejs/node/pull/33716
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
This makes sure that all async functions finish as expected.
PR-URL: https://github.com/nodejs/node/pull/34363
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Remove magic number and measure amount of difference should be allowable
between consecutive stat() calls.
PR-URL: https://github.com/nodejs/node/pull/31726
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Change test limit for atime from 2ms to 5ms. Add comment explaining why
the wiggle room is needed.
Fixes: https://github.com/nodejs/node/issues/24593
PR-URL: https://github.com/nodejs/node/pull/30437
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
- Extend the aliased buffer for stats objects to contain
the entire time spec (seconds and nanoseconds) for the time
values instead of calculating the milliseconds in C++ and
lose precision there.
- Calculate the nanosecond-precision time values in JS and expose
them in BigInt Stats objects as `*timeNs`. The
millisecond-precision values are now calculated from the
nanosecond-precision values.
PR-URL: https://github.com/nodejs/node/pull/21387
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
libuv returns values for `blksize` and `blocks` on stat calls so
do not coerce them into `undefined` on Windows.
PR-URL: https://github.com/nodejs/node/pull/26056
Fixes: https://github.com/nodejs/node/issues/25913
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
test-fs-stat-bigint.js failed once in CI but there wasn't enough
information to know what was giong on. Adding a bit of information to
the assertion that failed in case it fails again.
PR-URL: https://github.com/nodejs/node/pull/24566
Refs: https://github.com/nodejs/node/issues/24565
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
This commit removes `common.crashOnUnhandledRejection()` and adds
`common.disableCrashOnUnhandledRejection()`.
To reduce the risk of mistakes and make writing tests that involve
promises simpler, always install the unhandledRejection hook in tests
and provide a way to disable it for the rare cases where it's needed.
PR-URL: https://github.com/nodejs/node/pull/21849
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
