TS rewrite + Migrate build tooling from Vite to tsdown#46
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bartveneman merged 8 commits intomainfrom Mar 8, 2026
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- Swap vite + vite-plugin-dts for tsdown (with publint peer dep) - Add tsdown.config.js: ESM format, neutral platform (isomorphic), dts generation, publint enabled, deps.neverBundle for external dep, outExtension preserving .js file extensions - Remove vite.config.js - Update build script to `tsdown` - Remove lint-package CI job (publint now runs as part of the build) https://claude.ai/code/session_01VzmRVmcLD7znsBCH2V5Hg7
tsdown automatically excludes package.json dependencies from bundling, so explicitly listing @projectwallace/css-analyzer is unnecessary. https://claude.ai/code/session_01VzmRVmcLD7znsBCH2V5Hg7
Source files: - Convert all src/*.js → src/*.ts with proper TypeScript types - Add src/types.ts with shared Analysis, GuardResult, and Guard types - Annotate all guard functions with Analysis parameter type - Replace JSDoc @param annotations with TypeScript types - Remove @ts-expect-error in complexity.ts (use 'as Specificity' cast instead) - Keep @ts-expect-error in index.ts for overloaded analyze() return type mismatch Test files: - Convert all src/*.test.js → src/*.test.ts - Replace uvu (suite/assert) with vitest (describe/it/expect) - Remove uvu .run() calls; wrap tests in describe() blocks Config: - package.json: replace uvu with vitest, update test script to vitest run - tsconfig.json: remove allowJs/checkJs (pure TypeScript now), update include to .ts - tsdown.config.js: update entry points to .ts https://claude.ai/code/session_01VzmRVmcLD7znsBCH2V5Hg7
Replace 'latest' with installed semver ranges for publint, tsdown, and vitest to ensure reproducible installs. https://claude.ai/code/session_01VzmRVmcLD7znsBCH2V5Hg7
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bartveneman
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Summary
This PR replaces the Vite build system with tsdown, a more lightweight and specialized tool for building TypeScript/JavaScript libraries. The migration simplifies the build configuration and removes unnecessary build-related CI steps.
Key Changes
vite.config.jswhich defined library build settings, entry points, and external dependenciestsdown.config.jswith equivalent build settings including ESM format, TypeScript definitions generation, and publint validationpackage.jsonbuild command fromvite buildtotsdownnpm run buildfollowed bypublint, as tsdown now handles publint validation internallyviteandvite-plugin-dtsdev dependencies, addedtsdownandpublintas direct dev dependenciesNotable Details
@projectwallace/css-analyzer) is preserved in the new configurationdtsoptionhttps://claude.ai/code/session_01VzmRVmcLD7znsBCH2V5Hg7