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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.

This adds support for the new logical assignment operators.
@targos targos added the request-ci label Oct 27, 2020
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@targos targos commented Oct 27, 2020

@targos targos added dont-land-on-v10.x dont-land-on-v12.x dont-land-on-v14.x labels Oct 27, 2020
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@nodejs-github-bot nodejs-github-bot commented Oct 27, 2020

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@Trott Trott left a comment

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 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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@BridgeAR BridgeAR left a comment

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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@richardlau richardlau commented Oct 27, 2020

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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@BridgeAR BridgeAR commented Oct 27, 2020

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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@richardlau richardlau commented Oct 27, 2020

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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@BridgeAR BridgeAR commented Oct 27, 2020

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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@richardlau richardlau commented Oct 27, 2020

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.

Co-authored-by: Ruben Bridgewater <ruben@bridgewater.de>
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@targos 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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@nodejs-github-bot nodejs-github-bot commented Oct 30, 2020

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@targos targos added the commit-queue 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 issue Oct 30, 2020
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 Oct 30, 2020
targos added a commit that referenced this issue Nov 3, 2020
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
BethGriggs pushed a commit that referenced this issue Dec 8, 2020
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 issue Dec 10, 2020
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
BethGriggs pushed a commit that referenced this issue Dec 15, 2020
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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