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diff --git a/fastify-busboy/lib/main.d.ts b/fastify-busboy/lib/main.d.ts
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+// Definitions by: Jacob Baskin <https://github.com/jacobbaskin>
+//                 BendingBender <https://github.com/BendingBender>
+//                 Igor Savin <https://github.com/kibertoad>
+
+/// <reference types="node" />
+
+import * as http from 'http';
+import { Readable, Writable } from 'stream';
+export { Dicer } from "../deps/dicer/lib/dicer";
+
+export const Busboy: BusboyConstructor;
+export default Busboy;
+
+export interface BusboyConfig {
+    /**
+     * These are the HTTP headers of the incoming request, which are used by individual parsers.
+     */
+    headers: BusboyHeaders;
+    /**
+     * `highWaterMark` to use for this Busboy instance.
+     * @default WritableStream default.
+     */
+    highWaterMark?: number | undefined;
+    /**
+     * highWaterMark to use for file streams.
+     * @default ReadableStream default.
+     */
+    fileHwm?: number | undefined;
+    /**
+     * Default character set to use when one isn't defined.
+     * @default 'utf8'
+     */
+    defCharset?: string | undefined;
+    /**
+     * 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;
+    /**
+     * If paths in the multipart 'filename' field shall be preserved.
+     * @default false
+     */
+    preservePath?: boolean | undefined;
+    /**
+     * Various limits on incoming data.
+     */
+    limits?:
+    | {
+        /**
+         * Max field name size (in bytes)
+         * @default 100 bytes
+         */
+        fieldNameSize?: number | undefined;
+        /**
+         * Max field value size (in bytes)
+         * @default 1MB
+         */
+        fieldSize?: number | undefined;
+        /**
+         * Max number of non-file fields
+         * @default Infinity
+         */
+        fields?: number | undefined;
+        /**
+         * For multipart forms, the max file size (in bytes)
+         * @default Infinity
+         */
+        fileSize?: number | undefined;
+        /**
+         * For multipart forms, the max number of file fields
+         * @default Infinity
+         */
+        files?: number | undefined;
+        /**
+         * For multipart forms, the max number of parts (fields + files)
+         * @default Infinity
+         */
+        parts?: number | undefined;
+        /**
+         * For multipart forms, the max number of header key=>value pairs to parse
+         * @default 2000
+         */
+        headerPairs?: number | undefined;
+
+        /**
+         * For multipart forms, the max size of a header part
+         * @default 81920
+         */
+        headerSize?: number | undefined;
+    }
+    | undefined;
+}
+
+export type BusboyHeaders = { 'content-type': string } & http.IncomingHttpHeaders;
+
+export interface BusboyFileStream extends
+    Readable {
+
+        truncated: boolean;
+
+        /**
+         * The number of bytes that have been read so far.
+         */
+        bytesRead: number;
+}
+
+export interface Busboy extends Writable {
+    addListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+
+    on<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    on(event: string | symbol, listener: (...args: any[]) => void): this;
+
+    once<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    once(event: string | symbol, listener: (...args: any[]) => void): this;
+
+    removeListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+
+    off<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    off(event: string | symbol, listener: (...args: any[]) => void): this;
+
+    prependListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+
+    prependOnceListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
+
+    prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+}
+
+export interface BusboyEvents {
+    /**
+     * Emitted for each new file form field found.
+     *
+     * * Note: if you listen for this event, you should always handle the `stream` no matter if you care about the
+     * file contents or not (e.g. you can simply just do `stream.resume();` if you want to discard the contents),
+     * otherwise the 'finish' event will never fire on the Busboy instance. However, if you don't care about **any**
+     * incoming files, you can simply not listen for the 'file' event at all and any/all files will be automatically
+     * and safely discarded (these discarded files do still count towards `files` and `parts` limits).
+     * * If a configured file size limit was reached, `stream` will both have a boolean property `truncated`
+     * (best checked at the end of the stream) and emit a 'limit' event to notify you when this happens.
+     *
+     * @param listener.transferEncoding Contains the 'Content-Transfer-Encoding' value for the file stream.
+     * @param listener.mimeType Contains the 'Content-Type' value for the file stream.
+     */
+    file: (
+        fieldname: string,
+        stream: BusboyFileStream,
+        filename: string,
+        transferEncoding: string,
+        mimeType: string,
+    ) => void;
+    /**
+     * Emitted for each new non-file field found.
+     */
+    field: (
+        fieldname: string,
+        value: string,
+        fieldnameTruncated: boolean,
+        valueTruncated: boolean,
+        transferEncoding: string,
+        mimeType: string,
+    ) => void;
+    finish: () => void;
+    /**
+     * Emitted when specified `parts` limit has been reached. No more 'file' or 'field' events will be emitted.
+     */
+    partsLimit: () => void;
+    /**
+     *  Emitted when specified `files` limit has been reached. No more 'file' events will be emitted.
+     */
+    filesLimit: () => void;
+    /**
+     * Emitted when specified `fields` limit has been reached. No more 'field' events will be emitted.
+     */
+    fieldsLimit: () => void;
+    error: (error: unknown) => void;
+}
+
+export interface BusboyConstructor {
+    (options: BusboyConfig): Busboy;
+
+    new(options: BusboyConfig): Busboy;
+}
+