export declare const check: {
    defined: <Value>(value: Value) => value is Exclude<Value, undefined>;
    undefined: (value: unknown) => value is undefined;
    null: (value: unknown) => value is null;
    object: (value: unknown) => value is Record<string, unknown>;
    array: (value: unknown) => value is Array<unknown>;
    string: (value: unknown) => value is string;
    number: (value: unknown) => value is number;
    function: (value: unknown) => value is Function;
    promise: (value: unknown) => value is Promise<unknown>;
    actual: <Actual>(value: unknown, actual: Actual) => value is Actual;
    boolean: (value: unknown) => value is boolean;
};