const opt = Object.prototype.toString;
|
|
export function isArray(obj: any): obj is any[] {
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return opt.call(obj) === '[object Array]';
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}
|
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export function isObject(obj: any): obj is { [key: string]: any } {
|
return opt.call(obj) === '[object Object]';
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}
|
|
export function isString(obj: any): obj is string {
|
return opt.call(obj) === '[object String]';
|
}
|
|
export function isNumber(obj: any): obj is number {
|
return opt.call(obj) === '[object Number]' && obj === obj; // eslint-disable-line
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}
|
|
export function isRegExp(obj: any) {
|
return opt.call(obj) === '[object RegExp]';
|
}
|
|
export function isFile(obj: any): obj is File {
|
return opt.call(obj) === '[object File]';
|
}
|
|
export function isBlob(obj: any): obj is Blob {
|
return opt.call(obj) === '[object Blob]';
|
}
|
|
export function isUndefined(obj: any): obj is undefined {
|
return obj === undefined;
|
}
|
|
export function isNull(obj: any): obj is null {
|
return obj === null;
|
}
|
|
export function isFunction(obj: any): obj is (...args: any[]) => any {
|
return typeof obj === 'function';
|
}
|
|
export function isEmptyObject(obj: any): boolean {
|
return isObject(obj) && Object.keys(obj).length === 0;
|
}
|
|
export function isExist(obj: any): boolean {
|
return obj || obj === 0;
|
}
|
|
export function isWindow(el: any): el is Window {
|
return el === window;
|
}
|
