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@fastify/busboy

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@fastify/busboy

A streaming parser for HTML form data for node.js

  • 3.1.1
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What is @fastify/busboy?

The @fastify/busboy package is a plugin for the Fastify web framework. It is primarily used for handling multipart/form-data, which is often used for uploading files through HTTP forms. It wraps the busboy library, providing an easy-to-use interface for parsing form submissions, especially file uploads, within Fastify applications.

What are @fastify/busboy's main functionalities?

File Upload

This feature allows for handling file uploads in a Fastify application. The code demonstrates how to register the @fastify/busboy plugin and set up a route to handle POST requests for file uploads. The multipart method is used to process the incoming file stream.

fastify.register(require('@fastify/busboy'));

fastify.post('/upload', function (req, reply) {
  const mp = req.multipart(handler, function (err) {
    console.log('upload completed');
    reply.code(200).send();
  });

  function handler (field, file, filename, encoding, mimetype) {
    // Perform actions with the file stream
  }
});

Field Parsing

This feature is used for parsing non-file fields from a multipart/form-data request. The example shows how to collect form fields into an object and handle the form parsing completion.

fastify.register(require('@fastify/busboy'));

fastify.post('/form', function (req, reply) {
  const data = {};
  const mp = req.multipart(function (field, value) {
    data[field] = value;
  }, function (err) {
    console.log('form parsing completed', data);
    reply.code(200).send(data);
  }, { limits: { fields: 5 } });
});

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Package last updated on 22 Dec 2024

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