export type TrimChar<T extends string, C extends string> = [T] extends undefined ? '' : T extends `${C}${infer R}` ? TrimChar<R, C> : T extends `${infer R}${C}` ? TrimChar<R, C> : T;
export declare function indexTrim<T extends string, C extends string>(str: T | null | undefined, ch: C): TrimChar<T, C>;