rollup-plugin-pure

Rollup/Vite plugin that automatically injects /*#__PURE__*/ annotations before specific function calls and /*@__NO_SIDE_EFFECTS__*/ before function declarations, enabling better tree-shaking for libraries with definition functions like Vue's defineComponent. Current stable version is 0.4.0, actively maintained. Supports regex function names, uses AST-based approach, and handles Rollup's awareness of pure annotations. Key differentiator: automatic annotation injection without manual marks, works with Vite and Rollup 3/4.