119 lines
3.2 KiB
TypeScript
119 lines
3.2 KiB
TypeScript
/**********************************
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* @FilePath: is.ts
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* @Author: Ronnie Zhang
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* @LastEditor: Ronnie Zhang
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* @LastEditTime: 2023/12/04 22:45:32
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* @Email: zclzone@outlook.com
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* Copyright © 2023 Ronnie Zhang(大脸怪) | https://isme.top
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**********************************/
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const toString = Object.prototype.toString;
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export function is(val: unknown, type: string): boolean {
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return toString.call(val) === `[object ${type}]`;
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}
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export function isDef<T>(val: T): boolean {
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return typeof val !== 'undefined';
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}
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export function isUndef<T>(val: T): boolean {
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return typeof val === 'undefined';
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}
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export function isNull(val: unknown): val is null {
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return val === null;
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}
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export function isWhitespace(val: unknown): val is '' {
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return val === '';
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}
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export function isObject(val: unknown): boolean {
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return !isNull(val) && is(val, 'Object');
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}
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export function isArray(val: unknown): val is Array<unknown> {
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return Array.isArray(val);
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}
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export function isString(val: unknown): val is string {
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return is(val, 'String');
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}
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export function isNumber(val: unknown): val is number {
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return is(val, 'Number');
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}
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export function isBoolean(val: unknown): val is boolean {
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return is(val, 'Boolean');
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}
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export function isDate(val: unknown): val is Date {
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return is(val, 'Date');
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}
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export function isRegExp(val: unknown): val is RegExp {
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return is(val, 'RegExp');
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}
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export function isFunction(val: unknown): val is Function {
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return typeof val === 'function';
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}
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export function isPromise(val: unknown): val is Promise<unknown> {
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return is(val, 'Promise') && isObject(val) && isFunction((val as Promise<unknown>).then) && isFunction((val as Promise<unknown>).catch);
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}
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export function isElement(val: unknown): val is Element {
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return isObject(val) && !!((val as Element).tagName);
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}
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export function isWindow(val: unknown): boolean {
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return typeof window !== 'undefined' && isDef(window) && is(val, 'Window');
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}
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export function isNullOrUndef(val: unknown): boolean {
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return isNull(val) || isUndef(val);
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}
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export function isNullOrWhitespace(val: unknown): boolean {
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return isNullOrUndef(val) || isWhitespace(val);
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}
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/** 空数组 | 空字符串 | 空对象 | 空Map | 空Set */
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export function isEmpty(val: unknown): boolean {
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if (isArray(val) || isString(val)) {
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return val.length === 0;
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}
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if (val instanceof Map || val instanceof Set) {
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return val.size === 0;
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}
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if (isObject(val)) {
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// 使用类型断言确保val是一个对象
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return Object.keys(val as Record<string, unknown>).length === 0;
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}
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return false;
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}
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export function ifNull<T>(val: T, def: T = '' as T): T {
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return isNullOrWhitespace(val) ? def : val;
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}
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export function isUrl(path: string): boolean {
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const reg =
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/(((^https?:(?:\/\/)?)(?:[-;:&=+$,\w]+@)?[A-Za-z0-9.-]+(?::\d+)?|(?:www.|[-;:&=+$,\w]+@)[A-Za-z0-9.-]+)((?:\/[+~%/.\w-_]*)?\??(?:[-+=&;%@.\w_]*)#?(?:[\w]*))?)$/;
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return reg.test(path);
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}
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export function isExternal(path: string): boolean {
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return /^(https?:|mailto:|tel:)/.test(path);
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}
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export const isServer: boolean = typeof window === 'undefined';
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export const isClient: boolean = !isServer;
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