perf: use @fastify/busboy (nodejs#2211)

* use @fastify/busboy

* fix file handler

* fix test

* Revert "fix test"

This reverts commit 0eada58.

* v2

* fix parseFormDataString

lib/fetch/body.js

@@ -1,6 +1,6 @@
 'use strict'
 
-const Busboy = require('busboy')
+const Busboy = require('@fastify/busboy')
 const util = require('../core/util')
 const {
   ReadableStreamFrom,
@@ -385,10 +385,9 @@ function bodyMixinMethods (instance) {
         let busboy
 
         try {
-          busboy = Busboy({
+          busboy = new Busboy({
             headers,
-            preservePath: true,
-            defParamCharset: 'utf8'
+            preservePath: true
           })
         } catch (err) {
           throw new DOMException(`${err}`, 'AbortError')
@@ -397,8 +396,7 @@ function bodyMixinMethods (instance) {
         busboy.on('field', (name, value) => {
           responseFormData.append(name, value)
         })
-        busboy.on('file', (name, value, info) => {
-          const { filename, encoding, mimeType } = info
+        busboy.on('file', (name, value, filename, encoding, mimeType) => {
           const chunks = []
 
           if (encoding === 'base64' || encoding.toLowerCase() === 'base64') {

package.json

@@ -161,6 +161,6 @@
     ]
   },
   "dependencies": {
-    "busboy": "^1.6.0"
+    "@fastify/busboy": "^2.0.0"
   }
 }

test/node-fetch/utils/server.js

@@ -1,7 +1,7 @@
 const http = require('http')
 const zlib = require('zlib')
 const { once } = require('events')
-const newBusboy = require('busboy')
+const Busboy = require('@fastify/busboy')
 
 module.exports = class TestServer {
   constructor () {
@@ -435,7 +435,7 @@ module.exports = class TestServer {
     if (p === '/multipart') {
       res.statusCode = 200
       res.setHeader('Content-Type', 'application/json')
-      const busboy = newBusboy({ headers: request.headers })
+      const busboy = new Busboy({ headers: request.headers })
       let body = ''
       busboy.on('file', async (fieldName, file, fileName) => {
         body += `${fieldName}=${fileName}`

test/utils/formdata.js

@@ -1,4 +1,4 @@
-const busboy = require('busboy')
+const Busboy = require('@fastify/busboy')
 
 function parseFormDataString (
   body,
@@ -9,15 +9,15 @@ function parseFormDataString (
     fields: []
   }
 
-  const bb = busboy({
+  const bb = new Busboy({
     headers: {
       'content-type': contentType
     }
   })
 
   return new Promise((resolve, reject) => {
-    bb.on('file', (name, file, info) => {
-      cache.fileMap.set(name, { data: [], info })
+    bb.on('file', (name, file, filename, encoding, mimeType) => {
+      cache.fileMap.set(name, { data: [], info: { filename, encoding, mimeType } })
 
       file.on('data', (data) => {
         const old = cache.fileMap.get(name)
@@ -37,7 +37,7 @@ function parseFormDataString (
     })
 
     bb.on('field', (key, value) => cache.fields.push({ key, value }))
-    bb.on('close', () => resolve(cache))
+    bb.on('finish', () => resolve(cache))
     bb.on('error', (e) => reject(e))
 
     bb.end(body)