Method createCompiler

packages/webpack-cli/src/webpack-cli.ts:3422–3457

(
    options: Options,
    callback?: WebpackCallback,
  )

  }

  async createCompiler(
    options: Options,
    callback?: WebpackCallback,
  ): Promise<Compiler | MultiCompiler> {
    const { webpack } = options;

    if (typeof options.configNodeEnv === "string") {
      process.env.NODE_ENV = options.configNodeEnv;
    }

    const config = await this.loadConfig(options);
    let compiler: Compiler | MultiCompiler;

    try {
      compiler = callback
        ? webpack(config.options, (error, stats) => {
            if (error && this.isValidationError(error)) {
              this.logger.error(error.message);
              process.exit(2);
            }

            callback(error as Error | null, stats);
          })!
        : webpack(config.options);
    } catch (error) {
      if (this.isValidationError(error)) {
        this.logger.error(error.message);
      } else {
        this.logger.error(error);
      }

      process.exit(2);
    }

    return compiler;
  }

  #needWatchStdin(compiler: Compiler | MultiCompiler): boolean {
    if (this.isMultipleCompiler(compiler)) {