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- const toString = Object.prototype.toString;
- export function is(val: unknown, type: string) {
- return toString.call(val) === `[object ${type}]`;
- }
- export function isDef<T = unknown>(val?: T): val is T {
- return typeof val !== 'undefined';
- }
- export function isUnDef<T = unknown>(val?: T): val is T {
- return !isDef(val);
- }
- export function isObject(val: any): val is Record<any, any> {
- return val !== null && is(val, 'Object');
- }
- export function isEmpty<T = unknown>(val: T): val is T {
- if (isArray(val) || isString(val)) {
- return val.length === 0;
- }
- if (val instanceof Map || val instanceof Set) {
- return val.size === 0;
- }
- if (isObject(val)) {
- return Object.keys(val).length === 0;
- }
- return false;
- }
- export function isDate(val: unknown): val is Date {
- return is(val, 'Date');
- }
- export function isNull(val: unknown): val is null {
- return val === null;
- }
- export function isNullAndUnDef(val: unknown): val is null | undefined {
- return isUnDef(val) && isNull(val);
- }
- export function isNullOrUnDef(val: unknown): val is null | undefined {
- return isUnDef(val) || isNull(val);
- }
- export function isNumber(val: unknown): val is number {
- return is(val, 'Number');
- }
- export function isPromise<T = any>(val: unknown): val is Promise<T> {
- return is(val, 'Promise') && isObject(val) && isFunction(val.then) && isFunction(val.catch);
- }
- export function isString(val: unknown): val is string {
- return is(val, 'String');
- }
- export function isFunction(val: unknown): val is Function {
- return typeof val === 'function';
- }
- export function isBoolean(val: unknown): val is boolean {
- return is(val, 'Boolean');
- }
- export function isRegExp(val: unknown): val is RegExp {
- return is(val, 'RegExp');
- }
- export function isArray(val: any): val is Array<any> {
- return val && Array.isArray(val);
- }
- export function isWindow(val: any): val is Window {
- return typeof window !== 'undefined' && is(val, 'Window');
- }
- export function isElement(val: unknown): val is Element {
- return isObject(val) && !!val.tagName;
- }
- export const isServer = typeof window === 'undefined';
- export const isClient = !isServer;
- export function isUrl(path: string): boolean {
- const reg = /(((^https?:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+(?::\d+)?|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)$/;
- return reg.test(path);
- }
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