aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/node_modules/@fastify/busboy/lib/main.d.ts
blob: 91b6448363a7124227f7aaadaacfe2390dadf09c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
// 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;
}