feat: export tsdown version

[userquin]

• This PR contains AI-generated code, but I have carefully reviewed it myself. Otherwise, my PR may be closed.

Description

This PR exports the version, It is a pain to load tsdown version when required from the package.json:

• feat(nuxt): generate nuxt module builder output layout vueuse/vueuse#5503
• chore(nuxt): use tsdown/package.json to update builder version at module.json devframes/devframe#33

Linked Issues

Additional context

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tsdown

pnpm add https://pkg.pr.new/tsdown@976 -D

npm i https://pkg.pr.new/tsdown@976 -D

yarn add https://pkg.pr.new/tsdown@976.tgz -D

create-tsdown

pnpm add https://pkg.pr.new/create-tsdown@976 -D

npm i https://pkg.pr.new/create-tsdown@976 -D

yarn add https://pkg.pr.new/create-tsdown@976.tgz -D

@tsdown/css

pnpm add https://pkg.pr.new/@tsdown/css@976 -D

npm i https://pkg.pr.new/@tsdown/css@976 -D

yarn add https://pkg.pr.new/@tsdown/css@976.tgz -D

@tsdown/exe

pnpm add https://pkg.pr.new/@tsdown/exe@976 -D

npm i https://pkg.pr.new/@tsdown/exe@976 -D

yarn add https://pkg.pr.new/@tsdown/exe@976.tgz -D

tsdown-migrate

pnpm add https://pkg.pr.new/tsdown-migrate@976 -D

npm i https://pkg.pr.new/tsdown-migrate@976 -D

yarn add https://pkg.pr.new/tsdown-migrate@976.tgz -D

commit: d87766f

[Copilot]

Pull request overview

This PR exposes the tsdown package version as a normal named export (version), avoiding the need for downstream consumers to read/import package.json to access the version string.

Changes:

• Inject import.meta.TSDOWN_VERSION at build time from package.json’s version.
• Add TSDOWN_VERSION to the ImportMeta shim typings.
• Export version from the public entrypoint and update API snapshots accordingly.

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tsdown.config.ts	Adds a build-time define for import.meta.TSDOWN_VERSION sourced from package.json.
src/shims.d.ts	Extends ImportMeta typing to include TSDOWN_VERSION?: string.
src/index.ts	Adds export const version to the public API.
snapshots/tsnapi/index.snapshot.js	Updates API snapshot to include version export.
snapshots/tsnapi/index.snapshot.d.ts	Updates API snapshot typings to include version: string.

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