export type Camelify<T, Sep extends string = typeof defaultCaseSeparator, Shallow extends boolean = false> = T extends string ? StringCamelify<T, Sep> : T extends object ? ObjectCamelify<T, Sep, Shallow> : T;
type StringCamelify<S, Sep extends string> = S extends `${infer P1}${Sep}${infer P2}${infer P3}` ? `${P1}${Uppercase<P2>}${StringCamelify<P3, Sep>}` : S;
type ObjectCamelify<O, Sep extends string, Shallow extends boolean = false> = O extends Array<infer U> ? Array<ObjectCamelify<U, Sep, Shallow>> : O extends object ? {
    [K in keyof O as StringCamelify<string & K, Sep>]: Shallow extends true ? O[K] : ObjectCamelify<O[K], Sep, Shallow>;
} : O;
export type Snakify<T, Sep extends string = typeof defaultCaseSeparator, Shallow extends boolean = false> = T extends string ? StringSnakify<T, Sep> : T extends object ? ObjectSnakify<T, Sep, Shallow> : T;
type StringSnakify<S extends string, Sep extends string> = FixStringSnakeCase<StringSnakifyFirstStep<S, Sep>, Sep>;
type StringSnakifyFirstStep<S extends string, Sep extends string> = S extends `${infer A}${infer B}` ? `${A extends Sep ? "" : A extends Capitalize<A> ? Sep : ""}${Lowercase<A>}${StringSnakifyFirstStep<B, Sep>}` : S;
type FixStringSnakeCase<S extends string, Sep extends string> = S extends `${infer A}${infer B}` ? `${A extends Sep ? "" : A}${B}` : S;
type ObjectSnakify<O, Sep extends string, Shallow extends boolean = false> = O extends Array<infer U> ? Array<ObjectSnakify<U, Sep, Shallow>> : O extends object ? {
    [K in keyof O as StringSnakify<string & K, Sep>]: Shallow extends true ? O[K] : ObjectSnakify<O[K], Sep, Shallow>;
} : O;
declare const defaultCaseSeparator: "_";
export declare function camelify<U, Sep extends string>(U: U, Sep?: Sep): Camelify<U, Sep>;
export declare function camelify<U, Sep extends string, Shallow extends boolean>(U: U, Shallow: Shallow, Sep?: Sep): Camelify<U, Sep, Shallow>;
export declare function camelify<S extends string, Sep extends string>(S: S, Sep?: Sep): Camelify<S, Sep>;
export declare function camelify<O extends object, Sep extends string>(O: O, Sep?: Sep): Camelify<O, Sep>;
export declare function camelify<O extends object, Sep extends string, Shallow extends boolean>(O: O, Shallow: Shallow, Sep?: Sep): Camelify<O, Sep, Shallow>;
export declare function snakify<U, Sep extends string = typeof defaultCaseSeparator>(U: U, Sep?: Sep): Snakify<U, Sep>;
export declare function snakify<U, Shallow extends boolean, Sep extends string = typeof defaultCaseSeparator>(U: U, Shallow: Shallow, Sep?: Sep): Snakify<U, Sep, Shallow>;
export declare function snakify<S extends string, Sep extends string = typeof defaultCaseSeparator>(S: S, Sep?: Sep): Snakify<S, Sep>;
export declare function snakify<O extends object, Sep extends string = typeof defaultCaseSeparator>(O: O, Sep?: Sep): Snakify<O, Sep>;
export declare function snakify<O extends object, Shallow extends boolean, Sep extends string = typeof defaultCaseSeparator>(O: O, Shallow: Shallow, Sep?: Sep): Snakify<O, Sep, Shallow>;
export {};