Use when upgrading Vite versions, encountering deprecated APIs, or resolving version-specific breaking changes. Prevents using removed APIs after migration (e.g., rollupOptions in v8, legacy Sass API in v7, esbuild transforms in v8). Covers v5-to-v6 breaking changes (Environment API, json.stringify,
Use when upgrading Vite versions, encountering deprecated APIs, or resolving version-specific breaking changes. Prevents using removed APIs after migration (e.g., rollupOptions in v8, legacy Sass API in v7, esbuild transforms in v8). Covers v5-to-v6 breaking changes (Environment API, json.stringify, PostCSS), v6-to-v7 (Node.js 20+, build.target), and v7-to-v8 (Rolldown, Oxc, Lightning CSS, rolldow