/**
 * Obfuscates a filter field value, so that no customer internals are included
 * @example
 * ```
 * input: obfuscateFilterString("foo = bar AND baz = 1")
 * output: key = string AND key = number
 *```
 * @param filterString - filter field value
 * @internal
 */
export declare function obfuscateFilterString(filterString: string): string;