feat: provided some file structural changes

[ovflowd]

Description

This PR does some minimal changes meant to improve the build experience and reduce the performance costs.

• This PR moves the shared helpers.mjs into next.helpers.mjs as they're not exclusive to next-data
• This PR moves the next-data/index.mjs to just next.data.mjs
• This PR enables exclusion of some hefty modules, such as swc from the output tracing
• This PR removes isomorphic dompurify as to be honest, it is not needed as all Markdown Pre/HTML code comes from our Markdown Pages (DOMPurify also had a significant impact on the final bundle)
• This PR removes all languages besides JavaScript from the Highlight.js bundle as it was gigantic (the "common" language set was extensive and unnecessary)
  • highlight.js is going to be removed once we get rid of the legacy pages
• This PR does some minor optimisations with the Next.js configuration and the Theme Component by disabling unnecessary re-renders
• This PR updates some packages
• This PR adopts ESM for the Storybook Test Runner
• This PR simplifies the precommit hook by simply using git checkout
• This PR updates the build scripts removing the repeated prebuild

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[Harkunwar]

LGTM!

[ovflowd]

cc @nodejs/website requesting fast-tracking here as some of these changes would benefit from being deployed soonish.

[bmuenzenmeyer]

Read through it too, look good.

The sanitization is a bit concerning for long term consideration, in case remote markdown is ever used.

[ovflowd]

The sanitization is a bit concerning for long term consideration, in case remote markdown is ever used.

@bmuenzenmeyer agreed. But to be fair, all the Components with manual unsafe injection of HTML will be removed once we migrate to the new Components.

But I would probably also avoid at all costs on actually using remote markdown, even tho we do use MDXRemote as a component.

[bmuenzenmeyer]

But to be fair, all the Components with manual unsafe injection of HTML will be removed once we migrate to the new Components.

apologies, I feel as if I keep bringing up things the team has already thought through 😄