/**
 * @name forNumber
 * @description query json string for number value
 * @param json string
 * @param query string
 * @returns number | null
 */
export declare function forNumber(json: string, query: string): number | null;
/**
 * @name forString
 * @description query json string for string value
 * @param json
 * @param query
 * @returns string | null
 */
export declare function forString(json: string, query: string): string | null;
/**
 * @name forBoolean
 * @description query json string for boolean value
 * @param json string
 * @param query string
 * @returns boolean | null
 */
export declare function forBoolean(json: string, query: string): boolean | null;
declare const queryJsonStr: {
    forNumber: typeof forNumber;
    forString: typeof forString;
    forBoolean: typeof forBoolean;
};
export default queryJsonStr;