export declare type Dict<T> = Record<string, T>;
export declare type BaseTypes = string | number | boolean;
export declare function invert(o: Dict<BaseTypes>): Dict<string>;
export declare function remap(src: Dict<any>, transl: Dict<string>, tgt?: Dict<any>): Dict<any>;
export declare function toLut<T>(keys: string[], v: T | T[]): Dict<T>;
export declare function tryGet<T>(k: string, dict: Dict<T>, fallback_value?: T): T;
export declare function preferGet<T>(k: string, dict1: Dict<T>, dict2: Dict<T>, fallback_value?: T): T;
export declare function firstKey(o: object, exclude_keys?: string | Dict<any>): any;
export declare function inLut(keys: string[] | Dict<any>, lut: Dict<any>): typeof keys;
export declare function notInLut(keys: string[] | Dict<any>, lut: Dict<any>): typeof keys;
export declare function isEmpty(v: any): boolean;
export declare function isString(s: any): s is string;
export declare function isNumber(n: any): n is number;
export declare function isDict<T>(o: any): o is Dict<T>;
export declare function isArray<T>(a: any): a is T[];
export declare function isDictWithKeys(o: any): o is Object;
export declare function isArrayWithElems(a: any): a is [];
export declare function append<T>(acc: Dict<T>, to_add: typeof acc, ...args: (typeof acc)[]): Dict<T>;
export declare function append<T>(acc: Array<T>, to_add: typeof acc, ...args: (typeof acc)[]): Array<T>;
export declare function findValueOf(key: string, o: Dict<any> | any[], path_record?: string[]): any;
export declare function dArrAt<T>(a: T[], pos: number): T;
export declare function objectMap<T, U>(o: Dict<T>, f: (t: T) => U): Dict<U>;
export declare function objectPrune<T>(o_base: Dict<T>, prune_f?: (v: T) => any, make_new?: boolean): Dict<T>;
export declare function deepCopy(oa: Dict<any> | Array<any>): typeof oa;
export declare function errorRv<RV>(msg: string, rv?: RV): RV;
export declare function warnRv<RV>(msg: string, rv?: RV): RV;
export declare function logRv<RV>(msg: string, rv?: RV): RV;