added unit testing, and started implementing unit tests...phew

node_modules/winston/lib/winston.js

@@ -0,0 +1,181 @@
+/**
+ * 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 {Object}
+ */
+winston.RejectionHandler = require('./winston/rejection-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',
+    'handleRejections',
+    'unhandleRejections',
+    '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,
+      rejectionHandlers: defaultLogger.rejectionHandlers,
+      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');