Reduce JS parsers bundle size

[sosukesuzuki]

Description

The bundle size of each JS parser will be reduced by about 50kb.

main:

$ node ./scripts/build/build.mjs --print-size
 Building packages 
index.js.......................................................1.63 MB    DONE  
doc.js..........................................................177 kB    DONE  
standalone.js...................................................529 kB    DONE  
bin-prettier.js.................................................487 kB    DONE  
third-party.js..................................................305 kB    DONE  
parser-babel.js.....................................390 kB, esm 390 kB    DONE  
parser-flow.js....................................2.12 MB, esm 2.12 MB    DONE  
parser-typescript.js..............................3.57 MB, esm 3.57 MB    DONE  
parser-espree.js....................................252 kB, esm 251 kB    DONE  
parser-meriyah.js...................................255 kB, esm 254 kB    DONE  
parser-angular.js...................................111 kB, esm 110 kB    DONE  
parser-postcss.js...............................................237 kB    DONE  
parser-graphql.js.................................43.7 kB, esm 43.2 kB    DONE  
parser-markdown.js..................................173 kB, esm 173 kB    DONE  
parser-glimmer.js...................................193 kB, esm 192 kB    DONE  
parser-html.js......................................179 kB, esm 179 kB    DONE  
parser-yaml.js......................................142 kB, esm 141 kB    DONE  

pr:

$ node ./scripts/build/build.mjs --print-size
 Building packages 
index.js.......................................................1.63 MB    DONE  
doc.js..........................................................177 kB    DONE  
standalone.js...................................................529 kB    DONE  
bin-prettier.js.................................................487 kB    DONE  
third-party.js..................................................305 kB    DONE  
parser-babel.js.....................................338 kB, esm 337 kB    DONE  
parser-flow.js....................................2.07 MB, esm 2.07 MB    DONE  
parser-typescript.js..............................3.52 MB, esm 3.52 MB    DONE  
parser-espree.js....................................199 kB, esm 199 kB    DONE  
parser-meriyah.js...................................202 kB, esm 201 kB    DONE  
parser-angular.js...................................111 kB, esm 110 kB    DONE  
parser-postcss.js...............................................237 kB    DONE  
parser-graphql.js.................................43.7 kB, esm 43.2 kB    DONE  
parser-markdown.js..................................173 kB, esm 173 kB    DONE  
parser-glimmer.js...................................193 kB, esm 192 kB    DONE  
parser-html.js......................................179 kB, esm 179 kB    DONE  
parser-yaml.js......................................142 kB, esm 141 kB    DONE  

Checklist

• I’ve added tests to confirm my change works.
• (If changing the API or CLI) I’ve documented the changes I’ve made (in the docs/ directory).
• (If the change is user-facing) I’ve added my changes to changelog_unreleased/*/XXXX.md file following changelog_unreleased/TEMPLATE.md.
• I’ve read the contributing guidelines.

✨Try the playground for this PR✨

[fisker]

I guess because they both used in parser and printer?

[fisker]

Move utils.js to utils/index.js?

[sosukesuzuki]

Move utils.js to utils/index.js?

Yes, I was going to do that.

[fisker]

Why esm size of parser-postcss.js didn't display? bundler: "webpack" still there? Yes, confirmed, please remove that.

[sosukesuzuki]

Why esm size of parser-postcss.js didn't display?

Before, parser-postcss was bundled by webpack, right? This is probably a remnant of that.

[fisker]

Extact utils to one function is good, but it's easy to trap into circular dependency

[sosukesuzuki]

Yeah, we need to be careful. Let's find an ESLint rule that can detect it?
(Ideally, Tree Shaking for CJS would be enabled so that we don't have to make such a change.)