import type { FilesBase, FileCreateParams, FileObject } from "../resources/files/files.js";
import type { RequestOptions } from "../internal/request-options.js";
import { APIPromise } from "../core/api-promise.js";
import { type MultipartUploadConfig } from "./upload-file.js";
type Constructor<T> = new (...args: any[]) => T;
export interface FileCreateParamsWithMultipart extends FileCreateParams {
    /**
     * Optional configuration for automatic multipart uploads.
     * When the file size exceeds the threshold (default 100MB), the SDK
     * will automatically use multipart upload with presigned URLs.
     */
    multipartUpload?: MultipartUploadConfig;
}
/**
 * Methods `withFileHelpers` adds to (or overrides on) the generated `files` resource.
 *
 * The mixin's return type is spelled out so that declaration emit does not have to name the
 * anonymous class (TS4094: it has the protected `_client` member).
 */
export interface FileHelpers {
    /**
     * Upload a new file. Files larger than the multipart threshold are uploaded in parts.
     */
    create(body: FileCreateParamsWithMultipart, options?: RequestOptions): APIPromise<FileObject>;
}
export declare function withFileHelpers<TBase extends Constructor<FilesBase>>(Base: TBase): (new (...args: any[]) => FileHelpers) & TBase;
export {};
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