yalm
A simple javascript logging module for Node.js and the Browser.
Offers 4 logging levels, adds timestamp, severity and colors (even in browser console if possible). Logs via console.log, console.warn (if available) and console.error.
usage
log.debug('a debug message');
log.info('an info message');
log.warn('a warning message');
log.error('an error message');
log.info('array:', [null, 1, 'string', true]);
log.info('buffer:', new Buffer([32, 32]));
log('object:', {"key": "val"});output of above usage example
Node.js
Browser
options
You can set desired loglevel...
log.setLevel('debug'); // default: 'info'. possible values: 4, 'debug', 3, 'info', 2, 'warn', 1, 'error', 0, 'silent'... and you can disable printing of timestamps, severity and colors
log.setTimestamp(false);
log.setSeverity(false);
log.setColor(false);aliases
made for humans...
log('...'); // is an alias of log.info('...');
log.warning('...'); // is an alias of log.warn('...');
log.err('...'); // is an alias of log.error('...');change styling
if you want another timestamp format overwrite the log.ts function...
log.ts = function () {
// seconds since epoch
return '' + Math.floor((new Date()).getTime() / 1000);
};... if you want to change the severity strings overwrite log.map properties
log.map.debug = 'DEBUG:';
log.map.info = 'INFO:';
log.map.warn = 'WARNING:';
log.map.error = 'ERROR:';custom log targets
if you want to log in a file or smth you can just overwrite the methods log.stdout, log.stdwrn and log.stderr with your own logging function.
log.stderr = log.stdwrn = log.stdout = function () {
fs.appendFile('log.txt', Array.prototype.slice.call(arguments).join(' '));
};license
MIT © Sebastian Raff
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent