unplugin-vue-define-options is a build tool macro that enables the use of the `defineOptions` API within Vue 3's `<script setup>` syntax. This macro allows developers to define component options like `name`, `props`, `emits`, and `render` directly within the setup script, bridging the gap between Options API and Composition API for certain configurations. It is currently at version 3.1.2 and is part of the broader Vue Macros project, which sees frequent updates and feature additions, often with minor version bumps and occasional major releases (like v3.0.0) that introduce breaking changes. Its key differentiators include broad bundler support (Vite, Webpack, Rollup, esbuild via unplugin), full TypeScript compatibility, and support for both Vue 2.7 (though dropping in v3) and Vue 3.
npm install unplugin-vue-define-optionsVerified import paths — ran on the pinned version, not inferred.
Demonstrates how to configure `unplugin-vue-define-options` in a Vite project and use the `defineOptions` macro in a Vue Single File Component (SFC) to set component options like `name`.
Upgrade your project to Vue 3, Webpack 5+, and Node.js >=20.19.0 (as of v3.0.0-rc.0). Alternatively, stick to `unplugin-vue-define-options@^2.x`.
Review your `emits` definitions and adapt them to Vue 3.3's standard `defineEmits` usage, avoiding the `shortEmits` syntax if you've upgraded Vue.
Always import the plugin from its bundler-specific entry point (e.g., `unplugin-vue-define-options/vite` for Vite, `unplugin-vue-define-options/webpack` for Webpack) and ensure it's added to your bundler's plugin array correctly.
Ensure `unplugin-vue-define-options` is properly installed and configured in your `vite.config.ts`, `webpack.config.js`, or similar build configuration file. Verify that your project's build process is successfully running the unplugin transformations.
Double-check your bundler configuration (e.g., `vite.config.ts`, `webpack.config.js`) to ensure the `DefineOptions()` plugin is imported from the correct bundler-specific path and added to the `plugins` array. For Vite, ensure `@vitejs/plugin-vue` is also present and correctly configured.
Upgrade your Node.js environment to version `20.19.0` or higher. Alternatively, downgrade `unplugin-vue-define-options` to a `^2.x` version which supports Node.js 16/18.
Review your build configuration and other Vue macros. Ensure only one source is providing the `name` option. If you are using `unplugin-vue-macros` in combination, ensure there are no conflicting options being set for component names.