Dev Server Options

DevServer Options - server

Configure the behavior of Farm Dev Server. Example:

import { defineConfig } from "@farmfe/core";

export default defineConfig({
  // All dev server options are under server
  server: {
    port: 9000,
    //...
  },
});

type:

export interface UserServerConfig {
  headers?: OutgoingHttpHeaders | undefined;
  port?: number;
  https?: SecureServerOptions;
  protocol?: 'http' | 'https';
  // http2?: boolean;
  hmr?: boolean | HmrOptions;
  proxy?: Record<string, ProxiesOptions>;
  strictPort?: boolean;
  open?: boolean;
  host?: string | boolean;
  cors?: boolean | cors.Options;
  // whether to serve static assets in spa mode, default to true
  spa?: boolean;
  middlewares?: DevServerMiddleware[];
  writeToDisk?: boolean;
}

port

• default: 9000

The port the DevServer listens on.

https

• default: undefined

Enable TLS + HTTP2. The value is options that passes to http2.createSecureServer.

headers

• default: undefined

Setup global http response headers for the DevServer.

import { defineConfig } from '@farmfe/core'

export default defineConfig({
  server: {
    headers: {
      'Accept': 'xxxx'
    }
  }
})

strictPort

• default: false

By default, Farm will automatically resolve to a new port when given port is used. For example, if 9001 is used, then 9001 will be tried. But if strictPort is true, a error will be thrown when port conflicts, instead of try other ports automatically.

cors

• default: false

Configure @koa/cors options.

spa

• default: true

Enable fallback to index.html or not.

hmr

• default: true for start command, false for other commands

Enable HMR. After enabling the HMR capability, it will monitor the changes of the modules involved in the compilation process. When the modules change, it will automatically trigger recompilation and push the results to Farm Runtime for update. HMR can also be configured through an object, for example:

import { defineConfig } from '@farmfe/core';

export default defineConfig({
   // All dev server options are under server
   server: {
     hmr: {
       // Configure the port for web socket listening
       port: 9802
       // Configure the host for web socket listening
       host: 'localhost',
       // Files to ignore when configuring file monitoring
       ignores: ['auto_generated/*']
     }
     //...
   }
});

hmr.port

• default: 9801

The port the Web Socket server listens on

hmr.host

• default: localhost

Host on which the Web Socket server listens.

proxy

• Default value: undefined

Configure server proxy. farm uses http-proxy as a proxy for the development server. Based on http-proxy implementation, specific options refer to its documentation, example:

import { defineConfig } from "@farmfe/core";

export default defineConfig({
  server: {
    proxy: {
      "/api": {
        target: "https://music-erkelost.vercel.app/banner",
        changeOrigin: true,
        pathRewrite: (path: any) => path.replace(/^\/api/, ""),
      },
    },
  },
});

open

• default: false

After the compilation is completed, the browser is automatically opened to the corresponding page.

host

• default: localhost

The host that the Dev Server listens on.

middlewares

• default: []

Configuring middlewares for the dev server.

import { defineConfig } from "@farmfe/core";
import compression from 'koa-compress';

export default defineConfig({
  server: {
    middlewares: [
      compression
    ]
  },
});

Note that a middleware is a function that returns a koa middleware.

writeToDisk

• default: false

By default the compiled resources are stored and served in memory, set writeToDisk to true to emitted dev resources to the disk.