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feat(gatsby): add polyfill chunk to gatsby #25159

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merged 3 commits into from
Jul 9, 2020
Merged

feat(gatsby): add polyfill chunk to gatsby #25159

merged 3 commits into from
Jul 9, 2020

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wardpeet
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@wardpeet wardpeet commented Jun 20, 2020 •
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Description

Creates a separate polyfill chunk that contains all legacy browser modules. We reduce around 40kb of javascript for Modern browsers.

You can test it by running (it's using #25162 as code)

yarn add --registry=https://registry.wardpeet.dev gatsby@polyfills

Gatsby-legacy-polyfills

A package that contains all polyfills necessary for legacy browsers. It get compiled by microbundle so everything is compressed and everything is inside the bundle (no externals). This gives us the opportunity to improve user's code even more. (That's for a next PR)

Babel-preset-gatsby

Make sure that all modules are excluded by babel-preset-env so we do not add these unnecessarily

Documentation

It should be part of the build javascript documentation that I have on my list, I'm not going to do it as part of this one.

Related Issues

Related #24866

@gatsbot gatsbot bot added the status: triage needed Issue or pull request that need to be triaged and assigned to a reviewer label Jun 20, 2020
@wardpeet wardpeet force-pushed the feat/polyfills branch 4 times, most recently from f670bcc to a166c3d Compare June 21, 2020 21:46
@freiksenet freiksenet added status: inkteam assigned and removed status: triage needed Issue or pull request that need to be triaged and assigned to a reviewer labels Jun 22, 2020
@wardpeet wardpeet force-pushed the feat/polyfills branch 3 times, most recently from 721d1b9 to 65f6fef Compare June 23, 2020 10:21
@wardpeet wardpeet mentioned this pull request Jun 23, 2020
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@blainekasten
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Looks like a bunch of tests are failing. Want me to wait to review?

@wardpeet wardpeet force-pushed the feat/polyfills branch 2 times, most recently from 2ca42c5 to 007ba39 Compare June 29, 2020 20:55
@wardpeet wardpeet force-pushed the feat/core-js-resolver branch 2 times, most recently from f61eb8c to c69e5b6 Compare June 30, 2020 11:06
@wardpeet wardpeet force-pushed the feat/polyfills branch 2 times, most recently from 85ea586 to 2e510a0 Compare June 30, 2020 11:45
@wardpeet wardpeet marked this pull request as ready for review July 1, 2020 14:52
@wardpeet wardpeet changed the base branch from feat/core-js-resolver to master July 1, 2020 14:52
@wardpeet wardpeet requested review from a team as code owners July 1, 2020 15:01
@wardpeet wardpeet force-pushed the feat/polyfills branch 4 times, most recently from 75b492b to bf5071c Compare July 3, 2020 22:39
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gatsby-cloud-staging bot commented Jul 3, 2020 •
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Your pull request can be previewed in Gatsby Cloud: https://build-7975b136-847d-44a8-a481-be083f48b810.staging-previews.gtsb.io

@wardpeet wardpeet force-pushed the feat/polyfills branch 2 times, most recently from 88b6383 to aa23d41 Compare July 8, 2020 06:59
@wardpeet wardpeet requested a review from a team as a code owner July 8, 2020 06:59
@wardpeet wardpeet changed the base branch from master to feat/core-js-resolver July 8, 2020 07:35
pvdz
pvdz reviewed Jul 8, 2020
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It looks good to me. I saw @LekoArts was going to test it so I'll leave the stamp for him.

packages/gatsby-legacy-polyfills/src/exclude.js Show resolved Hide resolved
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LekoArts
LekoArts reviewed Jul 8, 2020
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Tested it out on https://github.com/LekoArts/gatsby-starter-minimal-blog and https://github.com/LekoArts/gatsby-starter-specimens (develop and build + serve) and haven't seen any weird behavior/errors in the console or in the browser itself then (Haven't checked the bundle sizes though)

pvdz
pvdz previously approved these changes Jul 8, 2020
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I believe @LekoArts validated his tests so this is good to go.

Keep in mind that, right now, this PR is not based on master so careful with the merge button!

Base automatically changed from feat/core-js-resolver to master July 9, 2020 06:44
@wardpeet wardpeet dismissed pvdz’s stale review July 9, 2020 06:44

The base branch was changed.

LekoArts
LekoArts approved these changes Jul 9, 2020
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👍

@wardpeet wardpeet merged commit 0b7738c into master Jul 9, 2020
@wardpeet wardpeet deleted the feat/polyfills branch July 9, 2020 07:31
@etabard
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etabard commented Jul 9, 2020

Hi ! Thanks a lot for the great work on this, this is definitely something I was looking for !
I tried the 2.24.0 version and have a small bundle size reduction (5ko gz). I now see the big polyfill separate file (26ko gz) but my main app bundle still contains a lot of core-js polyfills. I was hoping a bigger app bundle size reduction (around 20ko gz). Am I dreaming here ? :D

Capture d’écran 2020-07-09 à 11 26 58

Again, thanks for the great work here !
Have a great day

@wardpeet
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wardpeet commented Jul 9, 2020

Can you send me your site please,repo so I can check it out and do more improvements.

Please invite my username or have a chat with me using, ward@gatsbyjs.com

@etabard
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etabard commented Jul 9, 2020

@wardpeet Done ! Happy to discuss it with you, I also sent you an email

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@LekoArts LekoArts LekoArts approved these changes

@pvdz pvdz pvdz left review comments

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6 participants
@wardpeet @blainekasten @etabard @pvdz @LekoArts @freiksenet