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Custom Logger Library with winston
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var winston = require('winston') | |
// set default log level. | |
var logLevel = 'info' | |
// Set up logger | |
var customColors = { | |
trace: 'white', | |
debug: 'green', | |
info: 'blue', | |
warn: 'yellow', | |
crit: 'red', | |
fatal: 'red' | |
} | |
var logger = new (winston.Logger)({ | |
colors: customColors, | |
level: logLevel, | |
levels: { | |
fatal: 0, | |
crit: 1, | |
warn: 2, | |
info: 3, | |
debug: 4, | |
trace: 5 | |
}, | |
transports: [ | |
new (winston.transports.Console)({ | |
colorize: true, | |
timestamp: true | |
}), | |
new (winston.transports.File)({ filename: 'somefile.log' }) | |
] | |
}) | |
winston.addColors(customColors) | |
// Extend logger object to properly log 'Error' types | |
var origLog = logger.log | |
logger.log = function (level, msg) { | |
if (msg instanceof Error) { | |
var args = Array.prototype.slice.call(arguments) | |
args[1] = msg.stack | |
origLog.apply(logger, args) | |
} else { | |
origLog.apply(logger, arguments) | |
} | |
} | |
/* LOGGER EXAMPLES | |
var log = require('./log.js') | |
log.trace('testing') | |
log.debug('testing') | |
log.info('testing') | |
log.warn('testing') | |
log.crit('testing') | |
log.fatal('testing') | |
*/ | |
module.exports = logger |
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winston@3.2.1