| 提交 | 用户 | age | ||
| 2f6253 | 1 | const toString = Object.prototype.toString; |
| 陈 | 2 | |
| 3 | export function is(val: unknown, type: string) { | |
| 4 | return toString.call(val) === `[object ${type}]`; | |
| 5 | } | |
| 6 | ||
| 144ab5 | 7 | export function isDef<T = unknown>(val?: T): val is T { |
| 2f6253 | 8 | return typeof val !== 'undefined'; |
| 144ab5 | 9 | } |
| 2f6253 | 10 | |
| 144ab5 | 11 | export function isUnDef<T = unknown>(val?: T): val is T { |
| 2f6253 | 12 | return !isDef(val); |
| 144ab5 | 13 | } |
| 2f6253 | 14 | |
| 144ab5 | 15 | export function isObject(val: any): val is Record<any, any> { |
| 2f6253 | 16 | return val !== null && is(val, 'Object'); |
| 144ab5 | 17 | } |
| V | 18 | |
| 19 | export function isEmpty<T = unknown>(val: T): val is T { | |
| 20 | if (isArray(val) || isString(val)) { | |
| 21 | return val.length === 0; | |
| 22 | } | |
| 23 | ||
| 24 | if (val instanceof Map || val instanceof Set) { | |
| 25 | return val.size === 0; | |
| 26 | } | |
| 27 | ||
| 28 | if (isObject(val)) { | |
| 29 | return Object.keys(val).length === 0; | |
| 30 | } | |
| 31 | ||
| 32 | return false; | |
| 33 | } | |
| 2f6253 | 34 | |
| 陈 | 35 | export function isDate(val: unknown): val is Date { |
| 36 | return is(val, 'Date'); | |
| 37 | } | |
| 38 | ||
| 39 | export function isNull(val: unknown): val is null { | |
| 40 | return val === null; | |
| 41 | } | |
| 42 | ||
| cedba3 | 43 | export function isNullAndUnDef(val: unknown): val is null | undefined { |
| V | 44 | return isUnDef(val) && isNull(val); |
| 45 | } | |
| 46 | ||
| ca4f1a | 47 | export function isNullOrUnDef(val: unknown): val is null | undefined { |
| V | 48 | return isUnDef(val) || isNull(val); |
| 49 | } | |
| 50 | ||
| 2f6253 | 51 | export function isNumber(val: unknown): val is number { |
| 陈 | 52 | return is(val, 'Number'); |
| 53 | } | |
| 54 | ||
| 55 | export function isPromise<T = any>(val: unknown): val is Promise<T> { | |
| 56 | return is(val, 'Promise') && isObject(val) && isFunction(val.then) && isFunction(val.catch); | |
| 57 | } | |
| 58 | ||
| 59 | export function isString(val: unknown): val is string { | |
| 60 | return is(val, 'String'); | |
| 61 | } | |
| 62 | ||
| 144ab5 | 63 | export function isFunction(val: unknown): val is Function { |
| V | 64 | return typeof val === 'function'; |
| 65 | } | |
| 2f6253 | 66 | |
| 陈 | 67 | export function isBoolean(val: unknown): val is boolean { |
| 68 | return is(val, 'Boolean'); | |
| 69 | } | |
| 70 | ||
| 71 | export function isRegExp(val: unknown): val is RegExp { | |
| 72 | return is(val, 'RegExp'); | |
| 73 | } | |
| 74 | ||
| c774a6 | 75 | export function isArray(val: any): val is Array<any> { |
| 2f6253 | 76 | return val && Array.isArray(val); |
| 陈 | 77 | } |
| 78 | ||
| 144ab5 | 79 | export function isWindow(val: any): val is Window { |
| 2f6253 | 80 | return typeof window !== 'undefined' && is(val, 'Window'); |
| 144ab5 | 81 | } |
| 2f6253 | 82 | |
| 144ab5 | 83 | export function isElement(val: unknown): val is Element { |
| 2f6253 | 84 | return isObject(val) && !!val.tagName; |
| 144ab5 | 85 | } |
| 2f6253 | 86 | |
| 陈 | 87 | export const isServer = typeof window === 'undefined'; |
| 88 | ||
| 46e087 | 89 | export const isClient = typeof window !== 'undefined'; |
| V | 90 | |
| 2f6253 | 91 | export function isImageDom(o: Element) { |
| 陈 | 92 | return o && ['IMAGE', 'IMG'].includes(o.tagName); |
| 93 | } | |
| f75425 | 94 | |
| 144ab5 | 95 | export function isTextarea(element: Element | null): element is HTMLTextAreaElement { |
| f75425 | 96 | return element !== null && element.tagName.toLowerCase() === 'textarea'; |
| 144ab5 | 97 | } |
| 189914 | 98 | |
| 144ab5 | 99 | export function isMobile(): boolean { |
| 189914 | 100 | return !!navigator.userAgent.match( |
| V | 101 | /(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i |
| 102 | ); | |
| 144ab5 | 103 | } |
| 88f4a3 | 104 | |
| 144ab5 | 105 | export function isUrl(path: string): boolean { |
| 88f4a3 | 106 | const reg = /(((^https?:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+(?::\d+)?|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)$/; |
| V | 107 | return reg.test(path); |
| 144ab5 | 108 | } |
