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 isNullOrEmpty(val: unknown): val is null | undefined {
|
return isNullOrUnDef(val) || isEmpty(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);
|
}
|
|
export function isTime(value: any): value is Date {
|
return value instanceof Date && !isNaN(value.getTime());
|
}
|
|
export function isTimeViaConstructor(value: any): boolean {
|
return value instanceof Date || value.constructor === Date;
|
}
|
|
export function isTimeViaRegExp(value: any): boolean {
|
return /\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{3}Z/.test(value.toString());
|
}
|
|
export function isTimeType(value: string): boolean {
|
return !isNaN(Date.parse(value));
|
}
|
|
export function isValidJSON(text: string): boolean {
|
try {
|
JSON.parse(text);
|
return true;
|
} catch (error) {
|
return false;
|
}
|
}
|
|
// // 示例
|
// const time1 = new Date();
|
// console.log(isTime(time1)); // true
|
|
// const time2 = '2023-04-01T12:00:00Z';
|
// console.log(isTimeViaRegExp(time2)); // true
|
|
// const notTime = 'hello world';
|
// console.log(isTime(notTime)); // false
|
