import { type EnumLike } from "discord.js";
export declare function compareStrings<C extends true>(s1: string, s2: string, ignoreCase?: C): boolean;
export declare function compareStrings<C extends boolean>(s1: string, s2: string, ignoreCase: C): boolean;
export declare function excludeNullishProperties<O extends Record<any, any>>(O: O): void;
export declare function exists<O>(O: O): O is NonNullable<O>;
/**
 * This replaces special characters mentioning
 * `channel`, `command`, `emoji`, `member`, `role` or `user`
 * leaving only the id in snowflate format.
 *
 * https://discord.com/developers/docs/reference#message-formatting
 */
export declare function replaceMentionCharacters(s: string): string;
export declare function resolveEnum<T extends EnumLike<keyof T, T[keyof T]>>(enumLike: T, value: keyof T | T[keyof T]): T[keyof T];
export declare function resolveEnum<T extends EnumLike<keyof T, unknown>>(enumLike: T, value: keyof T | T[keyof T]): T[keyof T];
export declare function serializeRegExp<R extends RegExp>(R: R): {
    flags: R["flags"];
    isRegExp: true;
    source: R["source"];
};
export declare function serializeRegExp<S extends string>(S: S): {
    isRegExp: false;
    source: S;
};
export declare function serializeRegExp<T extends string | RegExp>(T: T): {
    flags?: string;
    isRegExp: boolean;
    source: string;
};