import { Definition } from "../types";
export declare function mustBeArray<T extends Array<any>>(obj: T): T;
export declare function mustBeArray(obj: null): [];
export declare function mustBeArray(obj: undefined): [];
export declare function mustBeArray<T extends object>(obj: T): [T];
export declare function mustBeFunction(f: any): f is (...any: Array<any>) => any;
export declare function mustNotNullOrUndefined(v: any): boolean;
export declare function mustBeCDSDefinition(v: any): v is Definition;
/**
 * must have equal values (with deep equal)
 *
 * @param v actual value
 * @param e expected value
 * @param m message when error
 */
export declare function mustEqual<T = any>(v: T, e: T, m?: string): void;