Updates

[gilbarbara]

This pull request updates the build system and configuration for the project, moving from tsup to tsdown, and improves type export handling and package compatibility. It also modernizes CI dependencies and updates several development dependencies for better compatibility and maintenance.

Build system migration and configuration:

• Replaced tsup with tsdown for building the package, updating related scripts and configuration in package.json and documentation in CLAUDE.md. The build now outputs named exports and cleans the dist folder by default. [1] [2] [3] [4] [5]
• Updated main entry points and type exports in package.json to use .cjs, .mjs, and .cts/.mts files, improving compatibility with modern bundlers and TypeScript. [1] [2]

Dependency and CI updates:

• Upgraded various GitHub Actions in .github/workflows/ci.yml to their latest major/minor versions for improved security and reliability. [1] [2] [3]
• Updated several devDependencies to latest versions in package.json, including @arethetypeswrong/cli, @gilbarbara/eslint-config, @types/node, @types/react, @vitejs/plugin-react, @vitest/coverage-v8, prettier, react, react-dom, start-server-and-test, typescript, and vitest. Also removed unused dependencies (del-cli, fix-tsup-cjs, tsup).

Workspace and build tool overrides:

• Added pnpm-workspace.yaml with explicit build tool allowances and overrides for esbuild and vite versions to ensure consistent builds across environments.

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[Copilot]

Pull request overview

This PR migrates the library build pipeline from tsup to tsdown, updates package entrypoints/type export wiring for dual ESM/CJS publishing, and modernizes CI and dependency versions to improve long-term compatibility.

Changes:

• Switch build/watch scripts and bundler config from tsup to tsdown, adjusting output expectations to .cjs/.mjs and per-condition type exports.
• Update package.json exports and types metadata to explicitly provide ESM/CJS runtime entries and corresponding .d.mts/.d.cts type entries.
• Refresh GitHub Actions versions and add a workspace config file to control build approvals and dependency overrides.

Reviewed changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tsconfig.json	Removes downlevelIteration from compiler options while keeping ES2020 target/no-emit settings.
pnpm-workspace.yaml	Adds pnpm workspace-level build allowances and dependency overrides (esbuild/vite).
package.json	Migrates to tsdown, updates exports/type entrypoints, refreshes dev dependencies, and pins pnpm via packageManager.
CLAUDE.md	Updates contributor documentation to reflect the tsdown build pipeline.
.github/workflows/ci.yml	Updates action versions and keeps validate/publish jobs for CI and tagged releases.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud