"use strict" //require('es6-shim'); ; var helpers = { /** * Wrap String.prototype.trim in a way that is easily mappable * * @param {String} str - The string to trim * @return {String} - The trimmed string */ stringTrim: function stringTrim(str) { return str.trim(); }, /** * Get the type of the variable passed * * @see https://techblog.badoo.com/blog/2013/11/01/type-checking-in-javascript/ * @see http://toddmotto.com/understanding-javascript-types-and-reliable-type-checking/ * @param {mixed} o * @return {String} */ type: function type(o) { var type = Object.prototype.toString.call(o).slice(8, -1).toLowerCase(); // handle NaN and Infinity if (type === 'number') { if (isNaN(o)) { return 'nan'; } if (!isFinite(o)) { return 'infinity'; } } return type; }, /** * Determine whether an object is scalar * * @param {mixed} obj * @return {bool} */ isScalar: function isScalar(obj) { var scalar = ['string', 'number', 'boolean']; return scalar.indexOf(helpers.type(obj)) !== -1; }, /** * Get a list of values with a common key from an array of objects * * @param {Array} arr - The array of objects to search * @param {String} key - The key of the object to get * @return {Array} */ arrayPluck: function arrayPluck(arr, key) { var output = []; // Empty case if (arr.length === 0) return output; arr.forEach(function (obj) { if (!helpers.isUndefined(obj[key])) { output.push(obj[key]); } }); return output; }, /** * Determine if a value matching the passed regular expression is * in the passed array * * @param {Array} arr - The array to search * @param {RegExp} pattern - The pattern to match * @return {Boolean} - If an array item matches the pattern */ regexInArray: function regexInArray(arr, pattern) { // Empty case(s) if (!helpers.isArray(arr)) return false; if (arr.length === 0) return false; var i = undefined, l = arr.length; for (i = 0; i < l; i++) { // Short circuit if any items match if (pattern.test(arr[i])) return true; } return false; }, /** * Make the first letter of the string uppercase * * @param {String} str * @return {String} */ upperCaseFirst: function upperCaseFirst(str) { str += ''; var first = str.charAt(0).toUpperCase(); return first + str.substr(1); } }; // Define an 'is' method for each type var types = ['Null', 'Undefined', 'Object', 'Array', 'String', 'Number', 'Boolean', 'Function', 'RegExp', 'NaN', 'Infinite']; types.forEach(function (t) { /** * Determine whether a variable is of the type specified in the * function name, eg isNumber * * Types available are Null, Undefined, Object, Array, String, Number, Boolean, Function, RegExp, NaN and Infinite * * @name is[type] * @param {mixed} o * @return {Boolean} */ helpers['is' + t] = function (o) { if (t.toLowerCase() === 'infinite') { t = 'infinity'; } return helpers.type(o) === t.toLowerCase(); }; }); module.exports = helpers; //# sourceMappingURL=helpers.js.map