export declare function isId(id: string): boolean;
export declare function hasId(obj: string | {
    id: string;
}): boolean;
export declare function getId(obj: string | {
    id: string;
}): string;
export declare function assert(msg: string, condition: boolean): void;
export declare function warn(msg: string, condition: boolean): void;
export declare function arrayDiff(arr1: string[], arr2: string[]): string[];
export declare function uniq<T>(list: T[]): T[];
export declare function copy<T>(val: T): T;
export declare function getOrCalcValue<T>(v: ((...args: any[]) => T) | T, context?: Record<string, unknown>, ...args: any[]): T;
export declare function getVal<T>(obj: any, key: string, defaultVal: T): T;