fetch-blob

A Blob implementation on node.js, originally from node-fetch

Usage

$ npm install fetch-blob

const Blob = require('fetch-blob');
const fetch = require('node-fetch');
fetch('https://httpbin.org/post', {
        method: 'POST',
        body: new Blob(['hello'], { type: 'text/plain' })
    })
    .then(res => res.json()) // expecting a json response
    .then(json => console.log(json));

See MDN doc and Tests for more details.