create() {
    const compiler = this.compiler;
    if (!compiler[LOGGER_FACTORY_COMPILER_KEY]) {
      compiler[LOGGER_FACTORY_COMPILER_KEY] = new Logger(this.compiler);
    }
    return compiler[LOGGER_FACTORY_COMPILER_KEY];
  }
@method create
@memberof module:hard-source-webpack-plugin/logger-factory~LoggerFactory#