export declare function nullAction(options: any, hint: any): void;
export declare function asArray(a: any): any[];
export declare function compare(a: any, b: any): -1 | 0 | 1;
/**
 * @param {any} value
 * @param {string|Function} expected
 * @return {string|boolean}
 */
export declare function hasDeleteHint(value: any, expected: string | Function): string | boolean;
/**
 * Should value be removed.
 * @param {string} value
 * @param {string} fromTemplate
 * @return {Object} true if fromTemplate tells is to delete value
 */
export declare function isToBeRemoved(value: string, fromTemplate: string): Object;
/**
 * Remove hint(s) form a value.
 * @param {string|any} value
 * @returns {any} value without hint
 */
export declare function hintFreeValue(value: string | any): any;
export declare function removeHintedValues(object: any, removeEmpty?: boolean): any;
export declare function deepCopy(object: any): any;
export declare function isEmpty(a: any): boolean;
export declare function isEqual(a: any, b: any, hints: any): boolean;
export declare function isScalar(a: any): boolean;
/**
 * Find best insertion point for b[i] in a.
 * @param {any[]} b
 * @param {number} i
 * @param {any[]} a
 */
export declare function indexFor(b: any[], i: number, a: any[]): number;
/**
 * Deliver key value to identify object.
 * @param {any} object
 * @param {Object} hint
 * @return {string|undefined}
 */
export declare function keyFor(object: any, hint: Object): string | undefined;
/**
 * Sort keys in source.
 * @param {Object} source
 * @param compare
 * @return {Object} source with keys orderd by compare function
 */
export declare function sortObjectsByKeys(source: Object, compare: any): Object;
/**
 *
 * @param {any} a
 * @param {any} b
 * @param {Array<RegExp|string>} definedOrder
 */
export declare function compareWithDefinedOrder(a: any, b: any, definedOrder: Array<RegExp | string>): number;
/**
 * try to from a regexp from str.
 * Str must start with '/' and end with '/<flags>'
 * @param {string} str
 * @returns {RegExp|string}
 */
export declare function toRegexp(str: string): RegExp | string;