/**
 * Creates a copy of the given object without the specified property.
 *
 * @param obj the source object
 * @param property the property to remove
 *
 * @returns the filtered object
 */
export declare function removeProperty<T>(obj: T, property: string): T;
/**
 * Immutably removes an item from the array.
 *
 * @param arr the source array
 * @param index the index to remove
 *
 * @return a new array without the entry
 */
export declare function removeItem(arr: any[], index: number): any[];
/**
 * Converts an array to a key-value object using the given key as index.
 *
 * @param arr the array to convert
 * @param key the array-item key to use as map key
 *
 * @returns the key-value object
 */
export declare function arrayToMap<T>(arr: T[], key: keyof T): {
    [key: number]: T;
};
/**
 * Converts a key-value object to a flat array.
 *
 * @param map the map to convert
 *
 * @returns the array
 */
export declare function mapToArray<T>(map: {
    [key: number]: T;
}): T[];
/**
 * Searches deeply for a property in an object using '.' as separator.
 *
 * @param obj the source object
 * @param pathString the property
 *
 * @returns the target property or null
 */
export declare function getPropertyByPath<T>(obj: T, pathString: string): any;
/**
 * Searches deeply for a property in an object using '.' as separator.
 *
 * @param obj the source object
 * @param pathString the property
 *
 * @returns the target property or null
 */
export declare function setPropertyByPath<T>(obj: T, pathString: string, value: any): void;
/**
 * Checks if a value is an absolute infinity.
 *
 * @param value the value to check
 *
 * @returns true if the value is an infinity.
 */
export declare function isInfinity(value: number): boolean;
/**
 * Converts radians to degrees.
 *
 * @param rad the radians to convert
 *
 * @returns the degree value
 */
export declare function toDegree(rad: number): number;
/**
 * Converts degrees to radians.
 * If degree is an inifinity, results in 0.
 *
 * @param degree the degrees to convert
 *
 * @returns the radians value
 */
export declare function toRad(degree: number): number;
/**
 * Get the UNIX Timestamp of a given date.
 *
 * @param date the date to convert
 *
 * @returns the seconds of the date
 */
export declare function dateToSeconds(date: Date): number;
export declare function hasArrayChanged(oldArr: any[], newArr: any[]): boolean;
export declare function generateRandomString(size: number): string;