import { Readable } from 'node:stream';
import type { MultipartFile } from './multipart/file.js';
/**
 * Qs module config
 */
type QueryStringConfig = {
    depth?: number;
    allowPrototypes?: boolean;
    plainObjects?: boolean;
    parameterLimit?: number;
    arrayLimit?: number;
    ignoreQueryPrefix?: boolean;
    delimiter?: RegExp | string;
    allowDots?: boolean;
    charset?: 'utf-8' | 'iso-8859-1' | undefined;
    charsetSentinel?: boolean;
    interpretNumericEntities?: boolean;
    parseArrays?: boolean;
    comma?: boolean;
};
/**
 * Base config used by all types
 */
type BodyParserBaseConfig = {
    encoding: string;
    limit: string | number;
    types: string[];
};
/**
 * Body parser config for parsing JSON requests
 */
export type BodyParserJSONConfig = BodyParserBaseConfig & {
    strict: boolean;
    convertEmptyStringsToNull: boolean;
};
/**
 * Parser config for parsing form data
 */
export type BodyParserFormConfig = BodyParserBaseConfig & {
    queryString: QueryStringConfig;
    convertEmptyStringsToNull: boolean;
};
/**
 * Parser config for parsing raw body (untouched)
 */
export type BodyParserRawConfig = BodyParserBaseConfig;
/**
 * Parser config for parsing multipart requests
 */
export type BodyParserMultipartConfig = BodyParserBaseConfig & {
    autoProcess: boolean | string[];
    maxFields: number;
    processManually: string[];
    convertEmptyStringsToNull: boolean;
    fieldsLimit?: number | string;
    tmpFileName?(): string;
};
/**
 * Body parser config for all supported form types
 */
export type BodyParserConfig = {
    allowedMethods: string[];
    json: BodyParserJSONConfig;
    form: BodyParserFormConfig;
    raw: BodyParserRawConfig;
    multipart: BodyParserMultipartConfig;
};
/**
 * Body parser config with partial config
 */
export type BodyParserOptionalConfig = {
    allowedMethods?: string[];
    json?: Partial<BodyParserJSONConfig>;
    form?: Partial<BodyParserFormConfig>;
    raw?: Partial<BodyParserRawConfig>;
    multipart?: Partial<BodyParserMultipartConfig>;
};
/**
 * ------------------------------------
 * Multipart related options
 * ------------------------------------
 */
/**
 * Readable stream along with some extra data. This is what
 * is passed to `onFile` handlers.
 */
export type MultipartStream = Readable & {
    headers: {
        [key: string]: string;
    };
    name: string;
    filename: string;
    bytes: number;
    file: MultipartFile;
};
/**
 * The callback handler for a given file part
 */
export type PartHandler = (part: MultipartStream, reportChunk: (chunk: Buffer) => void) => Promise<({
    filePath?: string;
    tmpPath?: string;
} & {
    [key: string]: any;
}) | void>;
/**
 * ------------------------------------
 * Multipart file related options
 * ------------------------------------
 */
/**
 * The options that can be used to validate a given
 * file
 */
export type FileValidationOptions = {
    size: string | number;
    extnames: string[];
};
/**
 * Error shape for file upload errors
 */
export type FileUploadError = {
    fieldName: string;
    clientName: string;
    message: string;
    type: 'size' | 'extname' | 'fatal';
};
/**
 * Shape of file.toJSON return value
 */
export type FileJSON = {
    fieldName: string;
    clientName: string;
    size: number;
    filePath?: string;
    fileName?: string;
    type?: string;
    extname?: string;
    subtype?: string;
    state: 'idle' | 'streaming' | 'consumed' | 'moved';
    isValid: boolean;
    validated: boolean;
    errors: FileUploadError[];
    meta: any;
};
export { MultipartFile };