Method push

lib/winston/transports/file.js:345–370

(log)

    }

    function push(log) {
      if (
        options.rows &&
        results.length >= options.rows &&
        options.order !== 'desc'
      ) {
        if (stream.readable) {
          stream.destroy();
        }
        return;
      }

      if (options.fields) {
        log = options.fields.reduce((obj, key) => {
          obj[key] = log[key];
          return obj;
        }, {});
      }

      if (options.order === 'desc') {
        if (results.length >= options.rows) {
          results.shift();
        }
      }
      results.push(log);
    }

    function check(log) {
      if (!log) {