14 lines
238 B
TypeScript
14 lines
238 B
TypeScript
/**
|
|
* 判断 Undefined
|
|
* @param val 值
|
|
*/
|
|
export declare function isUndefined(val: any): val is undefined;
|
|
|
|
declare module './ctor' {
|
|
interface XEUtilsMethods {
|
|
isUndefined: typeof isUndefined;
|
|
}
|
|
}
|
|
|
|
export default isUndefined
|