'use strict'
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// utils is a library of generic helper functions non-specific to axios
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var toString = Object.prototype.toString
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/**
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* Determine if a value is an Array
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*
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* @param {Object} val The value to test
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* @returns {boolean} True if value is an Array, otherwise false
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*/
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export function isArray (val) {
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return toString.call(val) === '[object Array]'
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}
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/**
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* Determine if a value is an Object
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*
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* @param {Object} val The value to test
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* @returns {boolean} True if value is an Object, otherwise false
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*/
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export function isObject (val) {
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return val !== null && typeof val === 'object'
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}
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/**
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* Determine if a value is a Date
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*
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* @param {Object} val The value to test
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* @returns {boolean} True if value is a Date, otherwise false
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*/
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export function isDate (val) {
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return toString.call(val) === '[object Date]'
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}
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/**
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* Determine if a value is a URLSearchParams object
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*
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* @param {Object} val The value to test
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* @returns {boolean} True if value is a URLSearchParams object, otherwise false
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*/
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export function isURLSearchParams (val) {
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return typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams
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}
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/**
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* Iterate over an Array or an Object invoking a function for each item.
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*
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* If `obj` is an Array callback will be called passing
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* the value, index, and complete array for each item.
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*
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* If 'obj' is an Object callback will be called passing
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* the value, key, and complete object for each property.
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*
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* @param {Object|Array} obj The object to iterate
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* @param {Function} fn The callback to invoke for each item
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*/
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export function forEach (obj, fn) {
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// Don't bother if no value provided
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if (obj === null || typeof obj === 'undefined') {
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return
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}
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// Force an array if not already something iterable
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if (typeof obj !== 'object') {
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/*eslint no-param-reassign:0*/
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obj = [obj]
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}
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if (isArray(obj)) {
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// Iterate over array values
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for (var i = 0, l = obj.length; i < l; i++) {
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fn.call(null, obj[i], i, obj)
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}
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} else {
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// Iterate over object keys
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for (var key in obj) {
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if (Object.prototype.hasOwnProperty.call(obj, key)) {
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fn.call(null, obj[key], key, obj)
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}
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}
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}
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}
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/**
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* 是否为boolean 值
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* @param val
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* @returns {boolean}
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*/
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export function isBoolean(val) {
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return typeof val === 'boolean'
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}
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