How can I implement custom logging with Winston?
You can create a custom logger in Winston by defining your own logging levels and formats. Would you like a code example?
Yes, please provide a code example for a custom logger.
Here's a simple example:
const { createLogger, format, transports } = require('winston');
const customLogger = createLogger({
level: 'info',
format: format.combine(
format.timestamp(),
format.json()
),
transports: [
new transports.Console(),
new transports.File({ filename: 'custom.log' })
]
});
customLogger.info('This is an info message');
How do I add custom log levels to this logger?
You can add custom log levels by defining them in the createLogger
method. For example:
const customLevels = {
levels: {
error: 0,
warn: 1,
info: 2,
debug: 3,
custom: 4
},
colors: {
error: 'red',
warn: 'yellow',
info: 'green',
debug: 'blue',
custom: 'magenta'
}
};
const customLogger = createLogger({
levels: customLevels.levels,
format: format.combine(
format.timestamp(),
format.json()
),
transports: [
new transports.Console(),
new transports.File({ filename: 'custom.log' })
]
});
customLogger.custom('This is a custom log message');
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