Method resolveConfig

packages/plugin/vite/src/ViteConfig.ts:28–65

(
    buildConfig: VitePluginBuildConfig | VitePluginRendererConfig,
    target: Target,
  )

  }

  async resolveConfig(
    buildConfig: VitePluginBuildConfig | VitePluginRendererConfig,
    target: Target,
  ): Promise<UserConfig> {
    const configEnv: ConfigEnv = {
      // @see - https://vitejs.dev/config/#conditional-config
      command: this.isProd ? 'build' : 'serve',
      // `mode` affects `.env.[mode]` file load.
      mode: this.mode,

      // Forge extension variables.
      root: this.projectDir,
      forgeConfig: this.pluginConfig,
      forgeConfigSelf: buildConfig,
    };

    // `configEnv` is to be passed as an arguments when the user export a function in `vite.config.js`.
    const userConfig = (await loadConfigFromFile(configEnv, buildConfig.config))
      ?.config;
    switch (target) {
      case 'main':
        return getMainViteConfig(configEnv as ConfigEnv<'build'>, userConfig);
      case 'preload':
        return getPreloadViteConfig(
          configEnv as ConfigEnv<'build'>,
          userConfig,
        );
      case 'renderer':
        return getRendererViteConfig(
          configEnv as ConfigEnv<'renderer'>,
          userConfig,
        );
      default:
        throw new Error(
          `Unknown target: ${target}, expected 'main', 'preload' or 'renderer'`,
        );
    }
  }

  get mode(): string {
    // Vite's `mode` can be passed in via command.