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- /*! loglevel - v1.6.6 - https://github.com/pimterry/loglevel - (c) 2019 Tim Perry - licensed MIT */
- (function (root, definition) {
- "use strict";
- if (typeof define === 'function' && define.amd) {
- define(definition);
- } else if (typeof module === 'object' && module.exports) {
- module.exports = definition();
- } else {
- root.log = definition();
- }
- }(this, function () {
- "use strict";
-
- // Slightly dubious tricks to cut down minimized file size
- var noop = function() {};
- var undefinedType = "undefined";
- var isIE = (typeof window !== undefinedType) && (
- /Trident\/|MSIE /.test(window.navigator.userAgent)
- );
-
- var logMethods = [
- "trace",
- "debug",
- "info",
- "warn",
- "error"
- ];
-
- // Cross-browser bind equivalent that works at least back to IE6
- function bindMethod(obj, methodName) {
- var method = obj[methodName];
- if (typeof method.bind === 'function') {
- return method.bind(obj);
- } else {
- try {
- return Function.prototype.bind.call(method, obj);
- } catch (e) {
- // Missing bind shim or IE8 + Modernizr, fallback to wrapping
- return function() {
- return Function.prototype.apply.apply(method, [obj, arguments]);
- };
- }
- }
- }
-
- // Trace() doesn't print the message in IE, so for that case we need to wrap it
- function traceForIE() {
- if (console.log) {
- if (console.log.apply) {
- console.log.apply(console, arguments);
- } else {
- // In old IE, native console methods themselves don't have apply().
- Function.prototype.apply.apply(console.log, [console, arguments]);
- }
- }
- if (console.trace) console.trace();
- }
-
- // Build the best logging method possible for this env
- // Wherever possible we want to bind, not wrap, to preserve stack traces
- function realMethod(methodName) {
- if (methodName === 'debug') {
- methodName = 'log';
- }
-
- if (typeof console === undefinedType) {
- return false; // No method possible, for now - fixed later by enableLoggingWhenConsoleArrives
- } else if (methodName === 'trace' && isIE) {
- return traceForIE;
- } else if (console[methodName] !== undefined) {
- return bindMethod(console, methodName);
- } else if (console.log !== undefined) {
- return bindMethod(console, 'log');
- } else {
- return noop;
- }
- }
-
- // These private functions always need `this` to be set properly
-
- function replaceLoggingMethods(level, loggerName) {
- /*jshint validthis:true */
- for (var i = 0; i < logMethods.length; i++) {
- var methodName = logMethods[i];
- this[methodName] = (i < level) ?
- noop :
- this.methodFactory(methodName, level, loggerName);
- }
-
- // Define log.log as an alias for log.debug
- this.log = this.debug;
- }
-
- // In old IE versions, the console isn't present until you first open it.
- // We build realMethod() replacements here that regenerate logging methods
- function enableLoggingWhenConsoleArrives(methodName, level, loggerName) {
- return function () {
- if (typeof console !== undefinedType) {
- replaceLoggingMethods.call(this, level, loggerName);
- this[methodName].apply(this, arguments);
- }
- };
- }
-
- // By default, we use closely bound real methods wherever possible, and
- // otherwise we wait for a console to appear, and then try again.
- function defaultMethodFactory(methodName, level, loggerName) {
- /*jshint validthis:true */
- return realMethod(methodName) ||
- enableLoggingWhenConsoleArrives.apply(this, arguments);
- }
-
- function Logger(name, defaultLevel, factory) {
- var self = this;
- var currentLevel;
- var storageKey = "loglevel";
- if (name) {
- storageKey += ":" + name;
- }
-
- function persistLevelIfPossible(levelNum) {
- var levelName = (logMethods[levelNum] || 'silent').toUpperCase();
-
- if (typeof window === undefinedType) return;
-
- // Use localStorage if available
- try {
- window.localStorage[storageKey] = levelName;
- return;
- } catch (ignore) {}
-
- // Use session cookie as fallback
- try {
- window.document.cookie =
- encodeURIComponent(storageKey) + "=" + levelName + ";";
- } catch (ignore) {}
- }
-
- function getPersistedLevel() {
- var storedLevel;
-
- if (typeof window === undefinedType) return;
-
- try {
- storedLevel = window.localStorage[storageKey];
- } catch (ignore) {}
-
- // Fallback to cookies if local storage gives us nothing
- if (typeof storedLevel === undefinedType) {
- try {
- var cookie = window.document.cookie;
- var location = cookie.indexOf(
- encodeURIComponent(storageKey) + "=");
- if (location !== -1) {
- storedLevel = /^([^;]+)/.exec(cookie.slice(location))[1];
- }
- } catch (ignore) {}
- }
-
- // If the stored level is not valid, treat it as if nothing was stored.
- if (self.levels[storedLevel] === undefined) {
- storedLevel = undefined;
- }
-
- return storedLevel;
- }
-
- /*
- *
- * Public logger API - see https://github.com/pimterry/loglevel for details
- *
- */
-
- self.name = name;
-
- self.levels = { "TRACE": 0, "DEBUG": 1, "INFO": 2, "WARN": 3,
- "ERROR": 4, "SILENT": 5};
-
- self.methodFactory = factory || defaultMethodFactory;
-
- self.getLevel = function () {
- return currentLevel;
- };
-
- self.setLevel = function (level, persist) {
- if (typeof level === "string" && self.levels[level.toUpperCase()] !== undefined) {
- level = self.levels[level.toUpperCase()];
- }
- if (typeof level === "number" && level >= 0 && level <= self.levels.SILENT) {
- currentLevel = level;
- if (persist !== false) { // defaults to true
- persistLevelIfPossible(level);
- }
- replaceLoggingMethods.call(self, level, name);
- if (typeof console === undefinedType && level < self.levels.SILENT) {
- return "No console available for logging";
- }
- } else {
- throw "log.setLevel() called with invalid level: " + level;
- }
- };
-
- self.setDefaultLevel = function (level) {
- if (!getPersistedLevel()) {
- self.setLevel(level, false);
- }
- };
-
- self.enableAll = function(persist) {
- self.setLevel(self.levels.TRACE, persist);
- };
-
- self.disableAll = function(persist) {
- self.setLevel(self.levels.SILENT, persist);
- };
-
- // Initialize with the right level
- var initialLevel = getPersistedLevel();
- if (initialLevel == null) {
- initialLevel = defaultLevel == null ? "WARN" : defaultLevel;
- }
- self.setLevel(initialLevel, false);
- }
-
- /*
- *
- * Top-level API
- *
- */
-
- var defaultLogger = new Logger();
-
- var _loggersByName = {};
- defaultLogger.getLogger = function getLogger(name) {
- if (typeof name !== "string" || name === "") {
- throw new TypeError("You must supply a name when creating a logger.");
- }
-
- var logger = _loggersByName[name];
- if (!logger) {
- logger = _loggersByName[name] = new Logger(
- name, defaultLogger.getLevel(), defaultLogger.methodFactory);
- }
- return logger;
- };
-
- // Grab the current global log variable in case of overwrite
- var _log = (typeof window !== undefinedType) ? window.log : undefined;
- defaultLogger.noConflict = function() {
- if (typeof window !== undefinedType &&
- window.log === defaultLogger) {
- window.log = _log;
- }
-
- return defaultLogger;
- };
-
- defaultLogger.getLoggers = function getLoggers() {
- return _loggersByName;
- };
-
- return defaultLogger;
- }));
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