Add production build for esm-browser

[porfirioribeiro]

Change the rollup config to also build pinia for esm browsers prod It will remove devtools and minify the code

Closes #2205

Summary by CodeRabbit

• New Features

  • Introduced a minified production browser bundle for faster load times.
  • Added a distinct ESM browser output filename (esm-browser.prod) for easier identification and CDN consumption.

• Chores

  • Improved classification of browser builds as raw ESM to enhance compatibility with modern tooling.
  • Adjusted dependency handling for the browser production build to simplify integration.
  • No changes to public APIs.

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[porfirioribeiro]

I would appreciate it if you could take a look at this PR, @posva.

Will be really helpful to be able to use Pinia with Micro-Frontends using importmaps.

[posva]

Hey @porfirioribeiro! Thanks for the PR, I still haven't got the time to take a look but I wanted to tell you that if you rebase from (or merge) v3, it should activate automatic releases so it can be used temporarily like these: https://github.com/vuejs/pinia/runs/47624782567

[coderabbitai[bot]]

Walkthrough

Updates rollup.config.mjs to add a minified browser production build (“browser-prod”), adjust raw ESM detection to include all browser variants, set external dependencies to only 'vue' for browser-prod, and alter output naming to esm-browser.prod.js for the browser format.

Changes

Cohort / File(s)	Summary
Build configuration rollup.config.mjs	Adds 'browser-prod' minified build; treats any 'browser' build as raw ESM; sets externals to ['vue'] for browser-prod while keeping '@vue/devtools-api' external elsewhere; updates output naming to dist/name.esm-browser.prod.js for browser-prod; routes minified browser build via 'browser-prod'.

Sequence Diagram(s)

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Assessment against linked issues

Objective	Addressed	Explanation
Vue 3 ESM prod bundle depending only on vue (no vue-demi) [#2205]	✅
Exclude @vue/devtools-api in prod bundle [#2205]	❓	External list change alone may not exclude code; depends on compile-time gating/tree-shaking not shown.
Provide separate prod and dev browser bundles [#2205]	❓	'browser-prod' added; presence/configuration of a distinct dev counterpart in this diff is not shown.

Assessment against linked issues: Out-of-scope changes

Poem

I nibbled the build, made a prod-flavored treat,
With ESM crunchy and Vue-only sweet.
I trimmed the leaves of demi and tools,
Named it just so, per bundling rules.
Now to the meadow—ship it fleet! 🐇✨

[!TIP]

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[porfirioribeiro]

Hey @porfirioribeiro! Thanks for the PR, I still haven't got the time to take a look but I wanted to tell you that if you rebase from (or merge) v3, it should activate automatic releases so it can be used temporarily like these: https://github.com/vuejs/pinia/runs/47624782567

Thanks @posva, whenever you have time take a look at this.

The temporarily deployed URLs will be helpful for testing. But would be nice to have this official so it could be part of the other npm CDNs

Thank you

[pkg-pr-new[bot]]

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commit: e9c3532