esm: avoid try/catch when validating urls#47541

anonrig · 2023-04-13T14:39:13Z

Due to URL.canParse, we can avoid try/catch block and have faster validation. The previous implementation was not performant due to:

Unnecessary string serialization - We don't need href, origin etc. for validating if a URL is valid or not.
URL.canParse can be written with V8 Fast API - enabling more performance out of this pull request.
URL.canParse does not return anything except a boolean.

cc @nodejs/url

nodejs-github-bot · 2023-04-13T14:39:18Z

Review requested:

@nodejs/loaders
@nodejs/modules

aduh95

Given that URL.canParse is user-mutable, should we use const{canParse } = URL or something like that? Or even better, can we import it primordial-style from ada directly?

anonrig · 2023-04-13T14:47:59Z

Given that URL.canParse is user-mutable, should we use const{canParse } = URL or something like that? Or even better, can we import it primordial-style from ada directly?

@aduh95 I like where this is going, but I couldn't visualize it. Can you elaborate on how we can import it primordial-style? We can always do const{canParse } = internalBinding('url'); if that's what you are recommending?

aduh95 · 2023-04-13T15:30:53Z

Yes, I mean something that's available only internally and cannot be mutated at runtime. const{canParse } = internalBinding('url') is close enough, let's roll with this :)

nodejs-github-bot · 2023-04-13T16:04:01Z

CI: https://ci.nodejs.org/job/node-test-pull-request/51204/

ljharb · 2023-04-13T17:27:30Z

This is way better/cleaner :-) but does it prevent backporting this commit, since older release lines may not have URL.canParse?

anonrig · 2023-04-13T17:44:32Z

This is way better/cleaner :-) but does it prevent backporting this commit, since older release lines may not have URL.canParse?

It might make it harder, due to conflicts, but I don't think it will block backporting any future changes to ESM.

ljharb · 2023-04-13T17:46:21Z

oh sure, i just meant, should this PR have any "do not backport" labels, or link to the canParse PR as a prereq?

anonrig · 2023-04-13T18:02:07Z

oh sure, i just meant, should this PR have any "do not backport" labels, or link to the canParse PR as a prereq?

I'm not quite sure. @nodejs/releasers what do you recommend?

JakobJingleheimer

Sweet, thanks! I was just suggesting this change last night in Slack 😁

aduh95 · 2023-04-13T20:27:58Z

oh sure, i just meant, should this PR have any "do not backport" labels, or link to the canParse PR as a prereq?

canParse was added in #47179, and there's no labels that says the backport is blocked, so no action should be necessary here I think. PRs are backported in the order they landed on Current release lines, precisely because it's often the case that a PR builds on top of another one.

mscdex · 2023-04-13T20:50:57Z

2. URL.canParse can be written with V8 Fast API - enabling more performance out of this pull request.

I'm confused by this. The C++ API still says this:

node/src/node_url.cc

Lines 116 to 117 in 4afb25c

// TODO(@anonrig): Add V8 Fast API for CanParse method
voidBindingData::CanParse(const FunctionCallbackInfo<Value>& args){

Or did you actually mean this PR does not improve performance until the TODO is resolved?

anonrig · 2023-04-13T21:09:32Z

Or did you actually mean this PR does not improve performance until the TODO is resolved?

I was giving some context to this particular change. It is definitely faster than the current implementation. Additionally, @KhafraDev just opened a pull request for adding v8 fast API to canParse#47552

ljharb · 2023-04-13T21:20:50Z

@aduh95 perfect, thanks for clarifying and linking :-)

nodejs-github-bot · 2023-04-14T15:04:52Z

CI: https://ci.nodejs.org/job/node-test-pull-request/51262/

nodejs-github-bot · 2023-04-14T20:26:06Z

CI: https://ci.nodejs.org/job/node-test-pull-request/51268/

anonrig · 2023-04-14T22:25:25Z

Would someone re-review this pull request? It's required due to force-push.

JakobJingleheimer · 2023-04-15T10:49:20Z

lib/internal/modules/esm/hooks.js

 }=require('internal/errors').codes;
 const{exitCodes: { kUnfinishedTopLevelAwait }}=internalBinding('errors');
 const{URL}=require('internal/url');
+const{canParse: urlCanParse}=internalBinding('url');


nit: this sounds a little Yoda-esque
Suggested change
const{canParse: urlCanParse}=internalBinding('url');
const{canParse: canParseURL}=internalBinding('url');

Not sure this is better, isURLString might be more suited. URLCanParse has the upside of being consistent with how primordials are named, which is nice imho

I want to change this to URLCanParse too but I'm too demotivated by having to run Node.js CI multiple times because of the flaky tests.

nodejs-github-bot · 2023-04-15T14:43:21Z

Landed in 17570c0

PR-URL: #47541 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Jacob Smith <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Stephen Belanger <[email protected]>

PR-URL: nodejs#47541 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Jacob Smith <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Stephen Belanger <[email protected]>

PR-URL: #47541 Backport-PR-URL: #50669 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Jacob Smith <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Stephen Belanger <[email protected]>

PR-URL: nodejs/node#47541 Backport-PR-URL: nodejs/node#50669 Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Jacob Smith <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Stephen Belanger <[email protected]>

nodejs-github-bot added esm Issues and PRs related to the ECMAScript Modules implementation. needs-ci PRs that need a full CI run. labels Apr 13, 2023

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anonrig mentioned this pull request Apr 13, 2023
url: handle URL.canParse without base parameter #47547
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esm: avoid try/catch when validating urls
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anonrig force-pushed the improve-esm-performance branch from 3a57762 to 05742e9Compare April 14, 2023 13:45

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targos mentioned this pull request May 2, 2023
v20.1.0 release proposal #47820
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esm: rename URLCanParse to be consistent #47668
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[v18.x] Backport most ESM and customization hook changes #50669
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v18.19.0 release proposal #50953
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	const{canParse: urlCanParse}=internalBinding('url');
	const{canParse: canParseURL}=internalBinding('url');

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