export declare const isNull: <T>(term: T | null) => term is null;
export declare const isFunction: <T extends Function, U>(term: T | U) => term is T;
export declare const isObject: <T extends object, U>(term: T | U) => term is NonNullable<T>;
export declare const isArray: <T, U>(term: U | T[]) => term is T[];
export declare const isMap: <K, V, U>(term: U | Map<K, V>) => term is Map<K, V>;
export declare const isSet: <T, U>(term: U | Set<T>) => term is Set<T>;
export declare const isWeakMap: <K extends object, V, U>(term: U | WeakMap<K, V>) => term is WeakMap<K, V>;
export declare const isWeakSet: <T extends object, U>(term: U | WeakSet<T>) => term is WeakSet<T>;
export declare const isDate: <U>(term: Date | U) => term is Date;
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