source.on is not a function

const request = require('request-promise');
const req = require('request')
const fs = require('fs');
const FormData = require('form-data')

function readImage(){
    return new Promise(function(resolve, reject) {
        fs.readFile('./img/150150.gif', (err, data) => {
            if(err) reject(err);
            resolve(data);
        });
    });
}

readImage().then(data => {
    let dat = toArrayBuffer(data);
    let filename = new Date().getTime();
    let formData = new FormData();
    formData.append('imageClass', 'twitterApp');
    formData.append('X-Requested-With', 'Iframe')
    formData.append('X-HTTP-Accept', 'application/json, text/javascript, */*; q=0.01')
    formData.append('file', dat, "twitterLogo");
    request.post({url: 'example.com/api/images/', data: dat, processData: false, contentType: false, type: 'POST'}).then(data => {
        console.log(data)
    }).catch(err =>{
        console.log(err);
    })
}).catch(error => {
    console.log(error);
})


function toArrayBuffer(buf) {
    var ab = new ArrayBuffer(buf.length);
    var view = new Uint8Array(ab);
    for (var i = 0; i < buf.length; ++i) {
        view[i] = buf[i];
    }
    return ab;
}

request.post says that source.on is not a function, though, I have no idea why that’d be. This is attempting to send an image file.

[ketantada]

I am getting error: TypeError: source.on is not a function at Function.DelayedStream.create (/node_modules/delayed-stream/lib/delayed_stream.js:33:10) at FormData.CombinedStream.append (/node_modules/combined-stream/lib/combined_stream.js:44:37) at FormData.append (/node_modules/form-data/lib/form_data.js:74:3) at appendFormValue (/node_modules/request/request.js:323:21) at Request.init (/node_modules/request/request.js:334:11) at new Request (/node_modules/request/request.js:128:8) at request (/node_modules/request/index.js:53:10) My code is:

var options = {
  url: 'http://...',
  method: 'POST',
  formData: {
    file: fs.createReadStream(__dirname + '/file.jpg'),
    first_name: 'first_name'
  }
}
request(options, function() {})

Request Version: request@2.85.0 node version: node v9.8.0

[nmccready]

https://github.com/request/request/issues/1495 related?