Upload files using NodeJS + Multer

Upload files using NodeJS + Multer

In the development of this functionality, some problems can be found, such as the number of files, valid file types, sizes of these files, and several others. And to save us from these problems we have the Multer library. Multer is a node.js middleware for handling multipart/form-data that is used to send files in forms.

Introduction

When building APIs, the need to upload files is expected, which can be images, text documents, scripts, pdfs, among others. In the development of this functionality, some problems can be found, such as the number of files, valid file types, sizes of these files, and several others. And to save us from these problems we have the Multer library. Multer is a node.js middleware for handling multipart/form-data that is used to send files in forms.

First steps

The first step is to create a NodeJS project on your computer.

Adding Express

In your terminal, type the following command:

yarn add express

You can also use NPM for installation

Create a file named app.js inside the src/ folder. The next step is to start our Express server in our app.js

const express = require("express")
const app = express()

app.listen(3000 || process.env.PORT, () => {
  console.log("Server on...")
})

nodejs express multer

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