sending multiform data with DUPLICATE KEYS in nodejs - node.js

Question

I need to send a POST request with NodeJS to an API that requires the same multiform key be used more than once.
This is a CURL example of the required action:
curl -H "Authorization: Bearer MY_ACCESS_TOKEN" -i -X POST -F "whitespace=1" \
-F "terms[]=lait" -F "definitions[]=milk" -F "terms[]=petits pois" \
-F "definitions[]=peas" -F "title=My first set via the API" \
-F "lang_terms=fr" -F "lang_definitions=en" \
https://api.quizlet.com/2.0/sets
As you can see, the keys "terms[]" and "definitions[]" are used more than once in the same request.
I've tried using the nodejs request/http/multi-form libraries with no success, as most of them require a JavaScript object to define the form data, which of course cannot accept duplicate keys.
Other than resorting to an exec() command to cURL, is there any nodejs library that will enable me to send a request with duplicate multiform keys?
I'm really banging my head against a wall with this one..

Answer 1

Try this its an example with request library
let options = { method: 'POST',
url:url,
headers:
{
'cache-control': 'no-cache',
authorization: 'Bearer '+accessToken ,
'content-type': 'application/json'
},
body:
{ //your array here
terms:['terms'] ,
definitions:['milk']
},
json: true
};
request(options, function (error, response, body) {
if(error){
console.log("Error ",error);
}
console.log("Response",body);
})

Answer 2

With unirest:
var unirest = require('unirest');
var req = unirest('POST', 'YOUR URL')
.headers({
'Content-Type': 'multipart/form-data; boundary=--------------------------846713359653092950719061',
'Authorization': 'YOUR AUTH'
})
.field('AAA', 'VAL1')
.field('AAA', 'VAL2')
.field('AAA', 'VAL3')
.end(function (res) {
if (res.error) throw new Error(res.error);
console.log(res.raw_body);
});