loggi/dist/index.js

A memory log util for JavaScript Applications

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.LOG_METHOD_LEVELS = exports.LOG_METHODS = exports.LOG_LEVELS = undefined;

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _constants = require('./constants');

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

/**
 * Prints the arguments in the console using the provided method.
 *
 * @param {string} method
 * @param  {...any} args
 */
var print = function (method) {
  var _console;

  for (var _len = arguments.length, args = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
    args[_key - 1] = arguments[_key];
  }

  return (_console = console)[method].apply(_console, args);
};

/**
 * Determines if the method should print to the console.
 *
 * @param {string} method
 * @param {string} logLevel
 * @returns {boolean}
 */
var shouldPrint = function (method, logLevel) {
  return _constants.LOG_METHOD_LEVELS[method] >= logLevel;
};

/**
 * Logger constructor function
 *
 * @param {object} userOptions
 * @returns {object}
 */
var createLogger = function () {
  var userOptions = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

  var defaults = {
    logLevel: _constants.LOG_LEVELS.DEBUG,
    maxMemoryLogs: 100
  };
  var options = _extends({}, defaults, userOptions);

  var history = [];

  /**
   * Saves the log in memory and prints it out,
   * depending on the log level.
   *
   * @param {string} method
   * @param  {...any} args
   */
  var log = function (method) {
    for (var _len2 = arguments.length, args = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
      args[_key2 - 1] = arguments[_key2];
    }

    history.push({
      method: method,
      args: args,
      timestamp: Date.now()
    });

    history = history.slice(0, options.maxMemoryLogs);

    shouldPrint(method, options.logLevel) && print.apply(undefined, [method].concat(args));
  };

  /**
   * Loops through the history array and prints all messages
   * from the logger's memory.
   */
  var debug = function () {
    history.map(function (_ref) {
      var method = _ref.method,
          args = _ref.args;
      return print.apply(undefined, [method].concat(_toConsumableArray(args)));
    });
  };

  var returnObject = {
    debug: debug,
    getHistory: function getHistory() {
      return history;
    }
  };

  _constants.LOG_METHODS.map(function (method) {
    return returnObject[method] = function () {
      for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
        args[_key3] = arguments[_key3];
      }

      return log.apply(undefined, [method].concat(args));
    };
  });

  return returnObject;
};

exports.default = createLogger;
exports.LOG_LEVELS = _constants.LOG_LEVELS;
exports.LOG_METHODS = _constants.LOG_METHODS;
exports.LOG_METHOD_LEVELS = _constants.LOG_METHOD_LEVELS;