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index.d.ts
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index.d.ts
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import { BusboyConfig, BusboyFileStream } from '@fastify/busboy'
import { FastifyPluginCallback, FastifyRequest } from 'fastify'
import { Readable } from 'stream'
import { FastifyErrorConstructor } from '@fastify/error'
declare module 'fastify' {
interface FastifyRequest {
isMultipart: () => boolean;
formData: () => Promise<FormData>;
// promise api
parts: (
options?: Omit<BusboyConfig, 'headers'>
) => AsyncIterableIterator<fastifyMultipart.Multipart>;
// Stream mode
file: (
options?: Omit<BusboyConfig, 'headers'> | fastifyMultipart.FastifyMultipartBaseOptions
) => Promise<fastifyMultipart.MultipartFile | undefined>;
files: (
options?: Omit<BusboyConfig, 'headers'> | fastifyMultipart.FastifyMultipartBaseOptions
) => AsyncIterableIterator<fastifyMultipart.MultipartFile>;
// Disk mode
saveRequestFiles: (
options?: Omit<BusboyConfig, 'headers'> & { tmpdir?: string }
) => Promise<Array<fastifyMultipart.SavedMultipartFile>>;
cleanRequestFiles: () => Promise<void>;
tmpUploads: Array<string> | null;
/** This will get populated as soon as a call to `saveRequestFiles` gets resolved. Avoiding any future duplicate work */
savedRequestFiles: Array<fastifyMultipart.SavedMultipartFile> | null;
}
interface FastifyInstance {
multipartErrors: MultipartErrors;
}
}
type FastifyMultipartPlugin = FastifyPluginCallback<
| fastifyMultipart.FastifyMultipartBaseOptions
| fastifyMultipart.FastifyMultipartOptions
| fastifyMultipart.FastifyMultipartAttachFieldsToBodyOptions
>
type MultipartHandler = (
field: string,
file: BusboyFileStream,
filename: string,
encoding: string,
mimetype: string
) => void
interface BodyEntry {
data: Buffer;
filename: string;
encoding: string;
mimetype: string;
limit: false;
}
interface MultipartErrors {
PartsLimitError: FastifyErrorConstructor;
FilesLimitError: FastifyErrorConstructor;
FieldsLimitError: FastifyErrorConstructor;
PrototypeViolationError: FastifyErrorConstructor;
InvalidMultipartContentTypeError: FastifyErrorConstructor;
RequestFileTooLargeError: FastifyErrorConstructor;
}
declare namespace fastifyMultipart {
export interface SavedMultipartFile extends MultipartFile {
/**
* Path to the temporary file
*/
filepath: string;
}
export type Multipart = MultipartFile | MultipartValue
export interface MultipartFile {
type: 'file';
toBuffer: () => Promise<Buffer>;
file: BusboyFileStream;
fieldname: string;
filename: string;
encoding: string;
mimetype: string;
fields: MultipartFields;
}
export interface MultipartValue<T = unknown> {
type: 'field';
value: T;
fieldname: string;
mimetype: string;
encoding: string;
fieldnameTruncated: boolean;
valueTruncated: boolean;
fields: MultipartFields;
}
export interface MultipartFields {
[fieldname: string]: Multipart | Multipart[] | undefined;
}
export interface FastifyMultipartBaseOptions extends Partial<BusboyConfig> {
/**
* Add a shared schema to validate the input fields
*/
sharedSchemaId?: string;
/**
* Allow throwing error when file size limit reached.
*/
throwFileSizeLimit?: boolean;
/**
* Detect if a Part is a file.
*
* By default a file is detected if contentType
* is application/octet-stream or fileName is not
* undefined.
*
* Modify this to handle e.g. Blobs.
*/
isPartAFile?: (
fieldName: string | undefined,
contentType: string | undefined,
fileName: string | undefined
) => boolean;
limits?: {
/**
* Max field name size in bytes
*/
fieldNameSize?: number;
/**
* Max field value size in bytes
*/
fieldSize?: number;
/**
* Max number of non-file fields
*/
fields?: number;
/**
* For multipart forms, the max file size
*/
fileSize?: number;
/**
* Max number of file fields
*/
files?: number;
/**
* Max number of header key=>value pairs
*/
headerPairs?: number;
/**
* For multipart forms, the max number of parts (fields + files)
* @default 1000
*/
parts?: number;
};
}
export interface FastifyMultipartOptions extends FastifyMultipartBaseOptions {
/**
* Only valid in the promise api. Append the multipart parameters to the body object.
*/
attachFieldsToBody?: false;
/**
* Manage the file stream like you need
*/
onFile?: (
fieldName: string,
stream: Readable,
filename: string,
encoding: string,
mimetype: string,
body: Record<string, BodyEntry>
) => void | Promise<void>;
}
export interface FastifyMultipartAttachFieldsToBodyOptions
extends FastifyMultipartBaseOptions {
/**
* Only valid in the promise api. Append the multipart parameters to the body object.
*/
attachFieldsToBody: true | 'keyValues';
/**
* Manage the file stream like you need
*/
onFile?: (this: FastifyRequest, part: MultipartFile) => void | Promise<void>;
}
/**
* Adds a new type `isFile` to help @fastify/swagger generate the correct schema.
*/
export function ajvFilePlugin (ajv: any): void
export const fastifyMultipart: FastifyMultipartPlugin
export { fastifyMultipart as default }
}
declare function fastifyMultipart (
...params: Parameters<FastifyMultipartPlugin>
): ReturnType<FastifyMultipartPlugin>
export = fastifyMultipart