New file |
| | |
| | | 'use strict' |
| | | |
| | | // utils is a library of generic helper functions non-specific to axios |
| | | |
| | | const { toString } = Object.prototype |
| | | |
| | | /** |
| | | * Determine if a value is an Array |
| | | * |
| | | * @param {Object} val The value to test |
| | | * @returns {boolean} True if value is an Array, otherwise false |
| | | */ |
| | | export function isArray(val) { |
| | | return toString.call(val) === '[object Array]' |
| | | } |
| | | |
| | | /** |
| | | * Determine if a value is an Object |
| | | * |
| | | * @param {Object} val The value to test |
| | | * @returns {boolean} True if value is an Object, otherwise false |
| | | */ |
| | | export function isObject(val) { |
| | | return val !== null && typeof val === 'object' |
| | | } |
| | | |
| | | /** |
| | | * Determine if a value is a Date |
| | | * |
| | | * @param {Object} val The value to test |
| | | * @returns {boolean} True if value is a Date, otherwise false |
| | | */ |
| | | export function isDate(val) { |
| | | return toString.call(val) === '[object Date]' |
| | | } |
| | | |
| | | /** |
| | | * Determine if a value is a URLSearchParams object |
| | | * |
| | | * @param {Object} val The value to test |
| | | * @returns {boolean} True if value is a URLSearchParams object, otherwise false |
| | | */ |
| | | export function isURLSearchParams(val) { |
| | | return typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams |
| | | } |
| | | |
| | | /** |
| | | * Iterate over an Array or an Object invoking a function for each item. |
| | | * |
| | | * If `obj` is an Array callback will be called passing |
| | | * the value, index, and complete array for each item. |
| | | * |
| | | * If 'obj' is an Object callback will be called passing |
| | | * the value, key, and complete object for each property. |
| | | * |
| | | * @param {Object|Array} obj The object to iterate |
| | | * @param {Function} fn The callback to invoke for each item |
| | | */ |
| | | export function forEach(obj, fn) { |
| | | // Don't bother if no value provided |
| | | if (obj === null || typeof obj === 'undefined') { |
| | | return |
| | | } |
| | | |
| | | // Force an array if not already something iterable |
| | | if (typeof obj !== 'object') { |
| | | /* eslint no-param-reassign:0 */ |
| | | obj = [obj] |
| | | } |
| | | |
| | | if (isArray(obj)) { |
| | | // Iterate over array values |
| | | for (let i = 0, l = obj.length; i < l; i++) { |
| | | fn.call(null, obj[i], i, obj) |
| | | } |
| | | } else { |
| | | // Iterate over object keys |
| | | for (const key in obj) { |
| | | if (Object.prototype.hasOwnProperty.call(obj, key)) { |
| | | fn.call(null, obj[key], key, obj) |
| | | } |
| | | } |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * 是否为boolean 值 |
| | | * @param val |
| | | * @returns {boolean} |
| | | */ |
| | | export function isBoolean(val) { |
| | | return typeof val === 'boolean' |
| | | } |
| | | |
| | | /** |
| | | * 是否为真正的对象{} new Object |
| | | * @param {any} obj - 检测的对象 |
| | | * @returns {boolean} |
| | | */ |
| | | export function isPlainObject(obj) { |
| | | return Object.prototype.toString.call(obj) === '[object Object]' |
| | | } |
| | | |
| | | /** |
| | | * Function equal to merge with the difference being that no reference |
| | | * to original objects is kept. |
| | | * |
| | | * @see merge |
| | | * @param {Object} obj1 Object to merge |
| | | * @returns {Object} Result of all merge properties |
| | | */ |
| | | export function deepMerge(/* obj1, obj2, obj3, ... */) { |
| | | const result = {} |
| | | function assignValue(val, key) { |
| | | if (typeof result[key] === 'object' && typeof val === 'object') { |
| | | result[key] = deepMerge(result[key], val) |
| | | } else if (typeof val === 'object') { |
| | | result[key] = deepMerge({}, val) |
| | | } else { |
| | | result[key] = val |
| | | } |
| | | } |
| | | for (let i = 0, l = arguments.length; i < l; i++) { |
| | | forEach(arguments[i], assignValue) |
| | | } |
| | | return result |
| | | } |
| | | |
| | | export function isUndefined(val) { |
| | | return typeof val === 'undefined' |
| | | } |