@strapi/strapi/dist/src/node/vite/watch.mjs.map

An open source headless CMS solution to create and manage your own API. It provides a powerful dashboard and features to make your life easier. Databases supported: MySQL, MariaDB, PostgreSQL, SQLite

{"version":3,"file":"watch.mjs","sources":["../../../../src/node/vite/watch.ts"],"sourcesContent":["import path from 'node:path';\nimport http from 'node:http';\nimport fs from 'node:fs/promises';\nimport { Server } from 'node:net';\nimport type { Core } from '@strapi/types';\n\nimport { mergeConfigWithUserConfig, resolveDevelopmentConfig } from './config';\n\nimport type { BuildContext } from '../create-build-context';\n\ninterface ViteWatcher {\n  close(): Promise<void>;\n}\n\nconst HMR_DEFAULT_PORT = 5173;\nconst MAX_PORT_ATTEMPTS = 30;\n\nconst findAvailablePort = (\n  startingPort: number,\n  attemptsLeft = MAX_PORT_ATTEMPTS\n): Promise<number> => {\n  return new Promise((resolve, reject) => {\n    if (attemptsLeft <= 0) {\n      reject(new Error(`No available ports found after ${MAX_PORT_ATTEMPTS} attempts.`));\n      return;\n    }\n\n    const server = new Server();\n    server.listen(startingPort, () => {\n      const { port } = server.address() as { port: number };\n      server.close(() => resolve(port));\n    });\n\n    server.on('error', (err: any) => {\n      if (err.code === 'EADDRINUSE') {\n        resolve(findAvailablePort(startingPort + 1, attemptsLeft - 1));\n      } else {\n        reject(err);\n      }\n    });\n  });\n};\n\nconst createHMRServer = () => {\n  return http.createServer(\n    // http server request handler. keeps the same with\n    // https://github.com/websockets/ws/blob/45e17acea791d865df6b255a55182e9c42e5877a/lib/websocket-server.js#L88-L96\n    (_, res) => {\n      const body = http.STATUS_CODES[426]; // Upgrade Required\n\n      res.writeHead(426, {\n        'Content-Length': body?.length ?? 0,\n        'Content-Type': 'text/plain',\n      });\n\n      res.end(body);\n    }\n  );\n};\n\nconst watch = async (ctx: BuildContext): Promise<ViteWatcher> => {\n  const hmrServer = createHMRServer();\n\n  // Allowing Vite to find an available port doesn't work, so we'll find an available port manually\n  // and use that. There is therefore a very slight race condition if you start up two servers at the same time\n  // one might fail, or it might start up but listen on the wrong port.\n  const availablePort = await findAvailablePort(HMR_DEFAULT_PORT);\n  ctx.options.hmrServer = hmrServer;\n  ctx.options.hmrClientPort = availablePort;\n\n  const config = await resolveDevelopmentConfig(ctx);\n\n  const finalConfig = await mergeConfigWithUserConfig(config, ctx);\n\n  const hmrConfig = config.server?.hmr;\n\n  // If the server used for Vite hmr is the one we've created (<> no user override)\n  if (typeof hmrConfig === 'object' && hmrConfig.server === hmrServer) {\n    // Only restart the hmr server when Strapi's server is listening\n    strapi.server.httpServer.on('listening', async () => {\n      hmrServer.listen(availablePort);\n    });\n  }\n\n  ctx.logger.debug('Vite config', finalConfig);\n\n  const { createServer } = await import('vite');\n\n  const vite = await createServer(finalConfig);\n\n  const viteMiddlewares: Core.MiddlewareHandler = (koaCtx, next) => {\n    return new Promise((resolve, reject) => {\n      const prefix = ctx.basePath.replace(ctx.adminPath, '').replace(/\\/+$/, '');\n\n      const originalPath = koaCtx.path;\n      if (!koaCtx.path.startsWith(prefix)) {\n        koaCtx.path = `${prefix}${koaCtx.path}`;\n      }\n\n      // Set cache-control headers to prevent caching issues during development restarts\n      koaCtx.set('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');\n      koaCtx.set('Pragma', 'no-cache');\n      koaCtx.set('Expires', '0');\n      koaCtx.set('Surrogate-Control', 'no-store');\n\n      vite.middlewares(koaCtx.req, koaCtx.res, (err: unknown) => {\n        if (err) {\n          reject(err);\n        } else {\n          if (!koaCtx.res.headersSent) {\n            koaCtx.path = originalPath;\n          }\n\n          resolve(next());\n        }\n      });\n    });\n  };\n\n  const serveAdmin: Core.MiddlewareHandler = async (koaCtx, next) => {\n    await next();\n\n    if (koaCtx.method !== 'HEAD' && koaCtx.method !== 'GET') {\n      return;\n    }\n\n    if (koaCtx.body != null || koaCtx.status !== 404) {\n      return;\n    }\n\n    const url = koaCtx.originalUrl;\n\n    try {\n      let template = await fs.readFile(\n        path.relative(ctx.cwd, '.strapi/client/index.html'),\n        'utf-8'\n      );\n      template = await vite.transformIndexHtml(url, template);\n\n      koaCtx.type = 'html';\n      koaCtx.body = template;\n    } catch (error) {\n      ctx.logger.error('Failed to serve admin panel in development mode:', error);\n      // Don't fallback to other handlers in development mode to prevent MIME type conflicts\n      koaCtx.status = 500;\n      koaCtx.body = 'Admin panel temporarily unavailable during server restart';\n    }\n  };\n\n  const adminRoute = `${ctx.adminPath}/:path*`;\n\n  // Remove any existing admin routes to prevent conflicts during restart\n  const existingRoutes = ctx.strapi.server.router.stack.filter(\n    (layer) => layer.path === adminRoute\n  );\n  existingRoutes.forEach((route) => {\n    const index = ctx.strapi.server.router.stack.indexOf(route);\n    if (index > -1) {\n      ctx.strapi.server.router.stack.splice(index, 1);\n    }\n  });\n\n  ctx.strapi.server.router.get(adminRoute, serveAdmin);\n  ctx.strapi.server.router.use(adminRoute, viteMiddlewares);\n\n  return {\n    async close() {\n      await vite.close();\n\n      if (hmrServer.listening) {\n        // Manually close the hmr server\n        // /!\\ This operation MUST be done after calling .close() on the vite\n        //      instance to avoid flaky behaviors with attached clients\n        await new Promise<void>((resolve, reject) => {\n          hmrServer.close((err) => (err ? reject(err) : resolve()));\n        });\n      }\n    },\n  };\n};\n\nexport { watch };\nexport type { ViteWatcher 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