//#region src/_util/is.d.ts
declare function isNonNullable<T>(val: T): val is NonNullable<T>;
declare function isRenderable<T>(val: T): val is Exclude<NonNullable<T>, false | ''>;
declare function isNumber(val: any): val is number;
declare function isString(val: any): val is string;
declare function isPlainObject<T extends object = object>(val: any): val is T;
declare function isFunction<Value, Args extends unknown[], Result>(val: Value | ((...args: Args) => Result)): val is (...args: Args) => Result;
declare function isThenable<T>(val?: PromiseLike<T>): val is PromiseLike<T>;
declare function isPrimitive(val: any): boolean;
declare function isTransitionEvent(event: Event): event is TransitionEvent;
//#endregion
export { isFunction, isNonNullable, isNumber, isPlainObject, isPrimitive, isRenderable, isString, isThenable, isTransitionEvent };