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tools: enable no-unused-expressions lint rule #36248

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tools: enable no-unused-expressions lint rule #36248

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targos
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@targos targos commented Nov 24, 2020 •
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Fixes: #36246

There are many places where I needed to disable the rule but I think it's still worth to have it. A few real mistakes are fixed thanks to it.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • commit message follows commit guidelines

@nodejs-github-bot nodejs-github-bot added the lib / src Issues and PRs related to general changes in the lib or src directory. label Nov 24, 2020
aduh95
aduh95 approved these changes Nov 24, 2020
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lib/internal/errors.js Show resolved Hide resolved
kaizhu256
kaizhu256 reviewed Nov 25, 2020
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benchmark/perf_hooks/bench-eventlooputil.js
@@ -33,7 +33,7 @@ function main({ method, n }) {
function benchIdleTime(n) {
bench.start();
for (let i = 0; i < n; i++)
nodeTiming.idleTime;
nodeTiming.idleTime; // eslint-disable-line no-unused-expressions
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can this be wrapped inside a noop or would it significantly affect the benchmark?

+function noop() {
+    return;
+}
...
-    nodeTiming.idleTime; // eslint-disable-line no-unused-expressions
+    noop(nodeTiming.idleTime);

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I think it's better to explicitly disable a rule when necessary instead of working around it.

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ok i agree - gives more eyeballs to scrutinize these weird pieces of code.
maybe adding a comment justifying naked-property-access could help catch more bugs in the pr (like whether they're actually needed or not)?

+    // benchmark getter() idleTime
     nodeTiming.idleTime; // eslint-disable-line no-unused-expressions

@targos targos added the request-ci Add this label to start a Jenkins CI on a PR. label Dec 6, 2020
@github-actions github-actions bot removed the request-ci Add this label to start a Jenkins CI on a PR. label Dec 6, 2020
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CI: https://ci.nodejs.org/job/node-test-pull-request/34820/

targos added a commit that referenced this pull request Dec 7, 2020
@targos
tools: enable no-unused-expressions lint rule
bf31d3c 
Fixes: #36246

PR-URL: #36248
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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targos commented Dec 7, 2020

Landed in bf31d3c

@targos targos closed this Dec 7, 2020
@targos targos deleted the no-unused-expressions branch December 7, 2020 19:37
cjihrig pushed a commit to cjihrig/node that referenced this pull request Dec 8, 2020
@targos @cjihrig
tools: enable no-unused-expressions lint rule
6e3da3b 
Fixes: nodejs#36246

PR-URL: nodejs#36248
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
targos added a commit that referenced this pull request Dec 21, 2020
@targos
tools: enable no-unused-expressions lint rule
040b39f 
Fixes: #36246

PR-URL: #36248
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@targos targos mentioned this pull request Dec 22, 2020
Merged
targos added a commit that referenced this pull request May 16, 2021
@targos
tools: enable no-unused-expressions lint rule
b39e71b 
Fixes: #36246

PR-URL: #36248
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@targos targos mentioned this pull request Jun 6, 2021
Merged
targos added a commit that referenced this pull request Jun 11, 2021
@targos
tools: enable no-unused-expressions lint rule
226a86c 
Fixes: #36246

PR-URL: #36248
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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@kaizhu256 kaizhu256 kaizhu256 left review comments

@whiteslack whiteslack whiteslack approved these changes

@ZYSzys ZYSzys ZYSzys approved these changes

@aduh95 aduh95 aduh95 approved these changes

@joyeecheung joyeecheung joyeecheung approved these changes

@cjihrig cjihrig cjihrig approved these changes

@lpinca lpinca lpinca approved these changes

@Trott Trott Trott approved these changes

@jasnell jasnell jasnell approved these changes

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There is no linter warning for an async function that is not called