The esbuild-fix-imports-plugin is an ESBuild plugin designed to fix import paths in TypeScript projects built with tsup (when bundling is disabled). It resolves path aliases from tsconfig.json, ensures relative imports have correct file extensions (.js, .mjs, .cjs), and converts directory imports to explicit index file paths. This plugin is particularly useful for developers using tsup with bundle: false who need their output files to have properly resolved import statements for Node.js or other environments that require explicit file extensions.