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assert,repl: enable ecmaVersion 2021 in acorn parser #35827

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assert,repl: enable ecmaVersion 2021 in acorn parser #35827

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@targos targos commented Oct 27, 2020

This adds support for the new logical assignment operators.

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assert,repl: enable ecmaVersion 2021 in acorn parser
a315740 
This adds support for the new logical assignment operators.
@targos targos added the request-ci Add this label to start a Jenkins CI on a PR. label Oct 27, 2020
@nodejs-github-bot nodejs-github-bot added assert Issues and PRs related to the assert subsystem. repl Issues and PRs related to the REPL subsystem. labels Oct 27, 2020
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targos commented Oct 27, 2020

@jasnell

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CI: https://ci.nodejs.org/job/node-test-pull-request/33882/

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Should we add an assert or repl test using the logical assignment operators in a way that would break without the acorn update? (Non-blocking question.)

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targos commented Oct 27, 2020

Should we add an assert or repl test using the logical assignment operators in a way that would break without the acorn update? (Non-blocking question.)

I'm not sure that's worth the effort.

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I suggest to use latest instead to prevent future updates. This is a recent feature added to acorn (https://github.com/acornjs/acorn/tree/master/acorn#interface).

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I suggest to use latest instead to prevent future updates. This is a recent feature added to acorn (https://github.com/acornjs/acorn/tree/master/acorn#interface).

Is that not going to cause maintenance issues when the code ends up in release lines?

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Is that not going to cause maintenance issues when the code ends up in release lines?

I am not certain I fully understand the comment. AFAIK the suggestion should minimize the maintenance need due to always providing the latest features acorn supports. Thus, there should be no need for a PR like this one after upgrading acorn.

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Is that not going to cause maintenance issues when the code ends up in release lines?

I am not certain I fully understand the comment. AFAIK the suggestion should minimize the maintenance need due to always providing the latest features acorn supports. Thus, there should be no need for a PR like this one after upgrading acorn.

I mean that, say, we cut Node.js 16 with it set to latest but at some point latest picks up new language features that are not supported by Node.js 16.

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I mean that, say, we cut Node.js 16 with it set to latest but at some point latest picks up new language features that are not supported by Node.js 16.

That should not be an issue: it would fail execution in the REPL and assert would not be able to execute the code in the first place if it would not be supported.

But it's actually very unlikely to even get to that: we'd have to update acorn without noticing it already supporting features that Node.js does not and that has never happened before as far as I can tell. Acorn only supports features that are stable and we'd have to lack behind on updating V8 quite a lot for it to happen.

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But it's actually very unlikely to even get to that: we'd have to update acorn without noticing it already supporting features that Node.js does not and that has never happened before as far as I can tell. Acorn only supports features that are stable and we'd have to lack behind on updating V8 quite a lot for it to happen.

¯\_(ツ)_/¯ I'm going off #35791 (comment) which implied that this PR shouldn't be backported to Node.js 14.

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fixup! assert,repl: enable ecmaVersion 2021 in acorn parser
089c479 
Co-authored-by: Ruben Bridgewater <ruben@bridgewater.de>
@targos targos added request-ci Add this label to start a Jenkins CI on a PR. and removed dont-land-on-v14.x labels Oct 28, 2020
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targos commented Oct 28, 2020

@BridgeAR convinced me that it should not be an issue if Acorn supports more syntax than V8.

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CI: https://ci.nodejs.org/job/node-test-pull-request/33904/

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@targos targos added the commit-queue Add this label to land a pull request using GitHub Actions. label Oct 30, 2020
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Landed in 87a6b60...0ddd69e

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nodejs-github-bot pushed a commit that referenced this pull request Oct 30, 2020
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assert,repl: enable ecmaVersion 2021 in acorn parser
0ddd69e 
This adds support for the new logical assignment operators.

PR-URL: #35827
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
@targos targos deleted the acorn-21 branch October 30, 2020 14:56
targos added a commit that referenced this pull request Nov 3, 2020
@targos
assert,repl: enable ecmaVersion 2021 in acorn parser
d95013f 
This adds support for the new logical assignment operators.

PR-URL: #35827
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
@targos targos mentioned this pull request Nov 3, 2020
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@aduh95 aduh95 mentioned this pull request Nov 6, 2020
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BethGriggs pushed a commit that referenced this pull request Dec 8, 2020
@targos @BethGriggs
assert,repl: enable ecmaVersion 2021 in acorn parser
eb1cdcd 
This adds support for the new logical assignment operators.

PR-URL: #35827
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
BethGriggs pushed a commit that referenced this pull request Dec 10, 2020
@targos @BethGriggs
assert,repl: enable ecmaVersion 2021 in acorn parser
dca3f27 
This adds support for the new logical assignment operators.

PR-URL: #35827
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
@BethGriggs BethGriggs mentioned this pull request Dec 10, 2020
Merged
BethGriggs pushed a commit that referenced this pull request Dec 15, 2020
@targos @BethGriggs
assert,repl: enable ecmaVersion 2021 in acorn parser
a9d3a0d 
This adds support for the new logical assignment operators.

PR-URL: #35827
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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@BridgeAR BridgeAR BridgeAR approved these changes

@devsnek devsnek devsnek approved these changes

@richardlau richardlau richardlau approved these changes

@gengjiawen gengjiawen gengjiawen approved these changes

@cjihrig cjihrig cjihrig approved these changes

@antsmartian antsmartian antsmartian approved these changes

@Trott Trott Trott approved these changes

@jasnell jasnell jasnell approved these changes

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