import { CreateAttachmentRequest } from './models/attachments.js';
export declare function createFileRequestBuilder(filePath: string): CreateAttachmentRequest;
/**
 * Encodes the content of each attachment stream to base64.
 * @param attachments The attachments to encode.
 * @returns The attachments with their content encoded to base64.
 */
export declare function encodeAttachmentStreams(attachments: CreateAttachmentRequest[]): Promise<CreateAttachmentRequest[]>;
/**
 * A utility function that recursively converts all keys in an object to camelCase.
 * @param obj The object to convert
 * @param exclude An array of keys to exclude from conversion
 * @returns The converted object
 * @ignore Not for public use.
 */
export declare function objKeysToCamelCase(obj: Record<string, unknown>, exclude?: string[]): any;
/**
 * A utility function that recursively converts all keys in an object to snake_case.
 * @param obj The object to convert
 * @param exclude An array of keys to exclude from conversion
 * @returns The converted object
 */
export declare function objKeysToSnakeCase(obj: Record<string, unknown>, exclude?: string[]): any;
/**
 * A better "Partial" type that makes all properties optional, including nested ones.
 * @see https://grrr.tech/posts/2021/typescript-partial/
 */
export type Subset<K> = {
    [attr in keyof K]?: K[attr] extends object ? Subset<K[attr]> : K[attr] extends object | null ? Subset<K[attr]> | null : K[attr] extends object | null | undefined ? Subset<K[attr]> | null | undefined : K[attr];
};