/**
 * Utility pathing and routing service
 */
import { Observable } from 'rxjs';
import { Coords } from '../interfaces/coords.interface';
export declare enum LOG_LEVEL {
    'LOG' = 0,
    'ERROR' = 1
}
export declare let __DEV__: boolean;
export declare let __LOG__: LOG_LEVEL;
export declare function enableDiagramProdMode(): void;
export declare function setLogLevel(level: LOG_LEVEL): void;
export declare function isDev(): boolean;
export declare function log(message: string, level?: LOG_LEVEL, ...args: any[]): void;
/**
 * rxjs log operator
 * @internal
 */
export declare function withLog(message: string, level?: LOG_LEVEL, ...args: any): <T>(source: Observable<T>) => Observable<T>;
export declare type ID = string;
/**
 * Generates a unique ID
 */
export declare function UID(): ID;
export declare function isArray<T>(val: any): val is T[];
export declare function isString(val: any): val is string;
export declare function isFunction(val: any): val is (...args: any) => any;
export declare function isNil(v: any): boolean;
export declare function coerceArray<T>(value: T | T[]): T[];
export declare function mapToArray<T>(map: {
    [key: string]: T;
}): T[];
export declare function arrayToMap<T>(arr: Array<{
    id: ID;
} & T>): {
    [key: string]: T;
};
export declare function generateLinePath(firstPoint: any, lastPoint: any): string;
export declare function generateCurvePath(firstPoint: Coords, lastPoint: Coords, curvy?: number): string;