2 files changed, 197 insertions, 0 deletions
diff --git a/node_modules/loglevelnext/lib/LogLevel.js b/node_modules/loglevelnext/lib/LogLevel.js
new file mode 100644
index 00000000..8f00411e
--- /dev/null
+++ b/node_modules/loglevelnext/lib/LogLevel.js
@@ -0,0 +1,78 @@
+'use strict';
+
+/* global window: true */
+const PrefixFactory = require('../factory/PrefixFactory');
+const MethodFactory = require('./MethodFactory');
+
+const defaults = {
+  factory: null,
+  level: 'warn',
+  name: +new Date(),
+  prefix: null
+};
+
+module.exports = class LogLevel {
+  constructor(options) {
+    // implement for some _very_ loose type checking. avoids getting into a
+    // circular require between MethodFactory and LogLevel
+    this.type = 'LogLevel';
+    this.options = Object.assign({}, defaults, options);
+    this.methodFactory = options.factory;
+
+    if (!this.methodFactory) {
+      const factory = options.prefix ? new PrefixFactory(this, options.prefix) : new MethodFactory(this);
+      this.methodFactory = factory;
+    }
+
+    if (!this.methodFactory.logger) {
+      this.methodFactory.logger = this;
+    }
+
+    this.name = options.name || '<unknown>';
+
+    // this.level is a setter, do this after setting up the factory
+    this.level = this.options.level;
+  }
+
+  get factory() {
+    return this.methodFactory;
+  }
+
+  set factory(factory) {
+    factory.logger = this;
+    this.methodFactory = factory;
+    this.methodFactory.replaceMethods(this.level);
+  }
+
+  disable() {
+    this.level = this.levels.SILENT;
+  }
+
+  enable() {
+    this.level = this.levels.TRACE;
+  }
+
+  get level() {
+    return this.currentLevel;
+  }
+
+  set level(logLevel) {
+    const level = this.methodFactory.distillLevel(logLevel);
+
+    if (level == null) {
+      throw new Error(`loglevelnext: setLevel() called with invalid level: ${logLevel}`);
+    }
+
+    this.currentLevel = level;
+    this.methodFactory.replaceMethods(level);
+
+    if (typeof console === 'undefined' && level < this.levels.SILENT) {
+      // eslint-disable-next-line no-console
+      console.warn('loglevelnext: console is undefined. The log will produce no output.');
+    }
+  }
+
+  get levels() { // eslint-disable-line class-methods-use-this
+    return this.methodFactory.levels;
+  }
+};
diff --git a/node_modules/loglevelnext/lib/MethodFactory.js b/node_modules/loglevelnext/lib/MethodFactory.js
new file mode 100644
index 00000000..cdf7038d
--- /dev/null
+++ b/node_modules/loglevelnext/lib/MethodFactory.js
@@ -0,0 +1,119 @@
+'use strict';
+
+const noop = () => {};
+const levels = Symbol('valid log levels');
+const instance = Symbol('a log instance');
+
+module.exports = class MethodFactory {
+  constructor(logger) {
+    this[instance] = logger;
+    this[levels] = {
+      TRACE: 0,
+      DEBUG: 1,
+      INFO: 2,
+      WARN: 3,
+      ERROR: 4,
+      SILENT: 5
+    };
+  }
+
+  get levels() {
+    return this[levels];
+  }
+
+  get logger() {
+    return this[instance];
+  }
+
+  set logger(logger) {
+    this[instance] = logger;
+  }
+
+  get methods() {
+    return Object.keys(this.levels)
+      .map(key => key.toLowerCase())
+      .filter(key => key !== 'silent');
+  }
+
+  // eslint-disable-next-line class-methods-use-this
+  bindMethod(obj, methodName) {
+    const method = obj[methodName];
+    if (typeof method.bind === 'function') {
+      return method.bind(obj);
+    }
+
+    try {
+      return Function.prototype.bind.call(method, obj);
+    } catch (e) {
+      // Missing bind shim or IE8 + Modernizr, fallback to wrapping
+      return function result() {
+        // eslint-disable-next-line prefer-rest-params
+        return Function.prototype.apply.apply(method, [obj, arguments]);
+      };
+    }
+  }
+
+  distillLevel(level) {
+    let result = level;
+
+    if (typeof result === 'string' && typeof this.levels[result.toUpperCase()] !== 'undefined') {
+      result = this.levels[result.toUpperCase()];
+    }
+
+    if (this.levelValid(result)) {
+      return result;
+    }
+  }
+
+  levelValid(level) {
+    if (typeof level === 'number' && level >= 0 && level <= this.levels.SILENT) {
+      return true;
+    }
+
+    return false;
+  }
+
+  /**
+   * Build the best logging method possible for this env
+   * Wherever possible we want to bind, not wrap, to preserve stack traces.
+   * Since we're targeting modern browsers, there's no need to wait for the
+   * console to become available.
+   */
+  // eslint-disable-next-line class-methods-use-this
+  make(methodName) {
+    if (methodName === 'debug') {
+      methodName = 'log';
+    }
+
+    /* eslint-disable no-console */
+    if (typeof console[methodName] !== 'undefined') {
+      return this.bindMethod(console, methodName);
+    } else if (typeof console.log !== 'undefined') {
+      return this.bindMethod(console, 'log');
+    }
+
+    /* eslint-enable no-console */
+    return noop;
+  }
+
+  replaceMethods(logLevel) {
+    const level = this.distillLevel(logLevel);
+
+    if (level == null) {
+      throw new Error(`loglevelnext: replaceMethods() called with invalid level: ${logLevel}`);
+    }
+
+    if (!this.logger || this.logger.type !== 'LogLevel') {
+      throw new TypeError('loglevelnext: Logger is undefined or invalid. Please specify a valid Logger instance.');
+    }
+
+    this.methods.forEach((methodName) => {
+      const { [methodName.toUpperCase()]: methodLevel } = this.levels;
+
+      this.logger[methodName] = (methodLevel < level) ? noop : this.make(methodName);
+    });
+
+    // Define log.log as an alias for log.debug
+    this.logger.log = this.logger.debug;
+  }
+};