import FormData from "form-data";
export type SnakeToCamel<S extends string> = S extends `${infer H}_${infer T}` ? `${H}${Capitalize<SnakeToCamel<T>>}` : S;
export type KeysToCamel<T> = T extends (infer U)[] ? KeysToCamel<U>[] : T extends object ? {
    [K in keyof T as K extends `_${string}` ? K : SnakeToCamel<string & K>]: KeysToCamel<T[K]>;
} : T;
export declare function toCamel<T>(obj: T): KeysToCamel<T>;
export type CamelToSnake<S extends string> = S extends `${infer H}${infer T}` ? T extends Uncapitalize<T> ? `${Uncapitalize<H>}${CamelToSnake<T>}` : `${Uncapitalize<H>}_${CamelToSnake<T>}` : S;
export type KeysToSnake<T> = T extends (infer U)[] ? KeysToSnake<U>[] : T extends object ? {
    [K in keyof T as CamelToSnake<string & K>]: KeysToSnake<T[K]>;
} : T;
export declare function toSnakeCase(str: string): string;
export declare function toCamelCase(str: string): string;
export declare function toSnakeObj<T>(obj: T): KeysToSnake<T>;
export declare function toSnakeFormData(data: Record<string, any>): FormData;
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