export declare const EMPTY_ARRAY: ReadonlyArray<any>;
export declare const EMPTY_OBJECT: {};
export declare const mobxShallow: {
    deep: boolean;
};
export declare type IDisposer = () => void;
export declare function fail(message?: string): never;
export declare function identity<T>(_: T): T;
export declare function nothing(): null;
export declare function noop(): void;
export declare function isArray(val: any): boolean;
export declare function asArray<T>(val: undefined | null | T | T[]): T[];
export declare function extend<A, B>(a: A, b: B): A & B;
export declare function extend<A, B, C>(a: A, b: B, c: C): A & B & C;
export declare function extend<A, B, C, D>(a: A, b: B, c: C, d: D): A & B & C & D;
export declare function extend(a: any, ...b: any[]): any;
export declare function extendKeepGetter<A, B>(a: A, b: B): A & B;
export declare function extendKeepGetter<A, B, C>(a: A, b: B, c: C): A & B & C;
export declare function extendKeepGetter<A, B, C, D>(a: A, b: B, c: C, d: D): A & B & C & D;
export declare function extendKeepGetter(a: any, ...b: any[]): any;
export declare function isPlainObject(value: any): boolean;
export declare function isMutable(value: any): boolean;
export declare function isPrimitive(value: any): boolean;
export declare function freeze<T>(value: T): T;
export declare function deepFreeze<T>(value: T): T;
export declare function isSerializable(value: any): boolean;
export declare function addHiddenFinalProp(object: any, propName: string, value: any): void;
export declare function addHiddenWritableProp(object: any, propName: string, value: any): void;
export declare function addReadOnlyProp(object: any, propName: string, value: any): void;
export declare function remove<T>(collection: T[], item: T): void;
export declare function registerEventHandler(handlers: Function[], handler: Function): IDisposer;
export declare function hasOwnProperty(object: Object, propName: string): any;
export declare function argsToArray(args: IArguments): any[];
export declare type DeprecatedFunction = Function & {
    ids?: {
        [id: string]: true;
    };
};
declare let deprecated: DeprecatedFunction;
export { deprecated };