matrix-js-sdk/src/logger.js

/*
Copyright 2018 André Jaenisch

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/**
 * @module logger
 */
const log = require("loglevel");

// This is to demonstrate, that you can use any namespace you want.
// Namespaces allow you to turn on/off the logging for specific parts of the
// application.
// An idea would be to control this via an environment variable (on Node.js).
// See https://www.npmjs.com/package/debug to see how this could be implemented
// Part of #332 is introducing a logging library in the first place.
const DEFAULT_NAME_SPACE = "matrix";
const logger = log.getLogger(DEFAULT_NAME_SPACE);
logger.setLevel(log.levels.DEBUG);

/**
 * Drop-in replacement for <code>console</code> using {@link https://www.npmjs.com/package/loglevel|loglevel}.
 * Can be tailored down to specific use cases if needed.
*/
module.exports = logger;