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* winston.js: Top-level include defining Winston.
*
* (C) 2010 Charlie Robbins
* MIT LICENCE
*/
'use strict';
const logform = require('logform');
const { warn } = require('./winston/common');
/**
* Setup to expose.
* @type {Object}
*/
const winston = exports;
/**
* Expose version. Use `require` method for `webpack` support.
* @type {string}
*/
winston.version = require('../package.json').version;
/**
* Include transports defined by default by winston
* @type {Array}
*/
winston.transports = require('./winston/transports');
/**
* Expose utility methods
* @type {Object}
*/
winston.config = require('./winston/config');
/**
* Hoist format-related functionality from logform.
* @type {Object}
*/
winston.addColors = logform.levels;
/**
* Hoist format-related functionality from logform.
* @type {Object}
*/
winston.format = logform.format;
/**
* Expose core Logging-related prototypes.
* @type {function}
*/
winston.createLogger = require('./winston/create-logger');
/**
* Expose core Logging-related prototypes.
* @type {Object}
*/
winston.ExceptionHandler = require('./winston/exception-handler');
/**
* Expose core Logging-related prototypes.
* @type {Container}
*/
winston.Container = require('./winston/container');
/**
* Expose core Logging-related prototypes.
* @type {Object}
*/
winston.Transport = require('winston-transport');
/**
* We create and expose a default `Container` to `winston.loggers` so that the
* programmer may manage multiple `winston.Logger` instances without any
* additional overhead.
* @example
* // some-file1.js
* const logger = require('winston').loggers.get('something');
*
* // some-file2.js
* const logger = require('winston').loggers.get('something');
*/
winston.loggers = new winston.Container();
/**
* We create and expose a 'defaultLogger' so that the programmer may do the
* following without the need to create an instance of winston.Logger directly:
* @example
* const winston = require('winston');
* winston.log('info', 'some message');
* winston.error('some error');
*/
const defaultLogger = winston.createLogger();
// Pass through the target methods onto `winston.
Object.keys(winston.config.npm.levels).concat([
'log',
'query',
'stream',
'add',
'remove',
'clear',
'profile',
'startTimer',
'handleExceptions',
'unhandleExceptions',
'configure'
]).forEach(method => (
winston[method] = (...args) => defaultLogger[method](...args)
));
/**
* Define getter / setter for the default logger level which need to be exposed
* by winston.
* @type {string}
*/
Object.defineProperty(winston, 'level', {
get() {
return defaultLogger.level;
},
set(val) {
defaultLogger.level = val;
}
});
/**
* Define getter for `exceptions` which replaces `handleExceptions` and
* `unhandleExceptions`.
* @type {Object}
*/
Object.defineProperty(winston, 'exceptions', {
get() {
return defaultLogger.exceptions;
}
});
/**
* Define getters / setters for appropriate properties of the default logger
* which need to be exposed by winston.
* @type {Logger}
*/
[
'exitOnError'
].forEach(prop => {
Object.defineProperty(winston, prop, {
get() {
return defaultLogger[prop];
},
set(val) {
defaultLogger[prop] = val;
}
});
});
/**
* The default transports and exceptionHandlers for the default winston logger.
* @type {Object}
*/
Object.defineProperty(winston, 'default', {
get() {
return {
exceptionHandlers: defaultLogger.exceptionHandlers,
transports: defaultLogger.transports
};
}
});
// Have friendlier breakage notices for properties that were exposed by default
// on winston < 3.0.
warn.deprecated(winston, 'setLevels');
warn.forFunctions(winston, 'useFormat', ['cli']);
warn.forProperties(winston, 'useFormat', [
'padLevels',
'stripColors'
]);
warn.forFunctions(winston, 'deprecated', [
'addRewriter',
'addFilter',
'clone',
'extend'
]);
warn.forProperties(winston, 'deprecated', [
'emitErrs',
'levelLength'
]);
// Throw a useful error when users attempt to run `new winston.Logger`.
warn.moved(winston, 'createLogger', 'Logger');
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