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 function isMap(val: unknown): val is Map<any, any> {
|
return is(val, 'Map');
|
}
|
|
export const isServer = typeof window === 'undefined';
|
|
export const isClient = !isServer;
|
|
export function isUrl(path: string): boolean {
|
const reg = /^http(s)?:\/\/([\w-]+\.)+[\w-]+(\/[\w- .\/?%&=]*)?/;
|
return reg.test(path);
|
}
|
