How to parse a json file with nodejs - node.js

Question

I got a little problem with the nodejs fetch module and more particularly with the JSON parse. When I want to parse the stock variable, he tells me that the size is equal to 0 ? But my file is not empty and the path is good.
The code is really simple but I don't know why this error append and I spend too much time on this.
Someone know why I get this error and how I can resolve it ?
here the code of my js file :
const fetch = require('node-fetch');
const keyword='test';
const url='http://localhost:8888/test.json';
fetch(url).then((stock) => {
console.log(stock);
const jsonFile = JSON.parse(stock);
const newCategory = jsonFile[test];
console.log(newCategory);
}).catch((e)=>{console.log(e)});
And the error in my terminal with the first console.log() :
Response {
size: 0,
timeout: 0,
[Symbol(Body internals)]:
{ body:
PassThrough {
_readableState: [ReadableState],
readable: true,
_events: [Object],
_eventsCount: 2,
_maxListeners: undefined,
_writableState: [WritableState],
writable: false,
allowHalfOpen: true,
_transformState: [Object] },
disturbed: false,
error: null },
[Symbol(Response internals)]:
{ url: 'http://localhost:8888/test.json',
status: 200,
statusText: 'OK',
headers: Headers { [Symbol(map)]: [Object] },
counter: 0 } }
SyntaxError: Unexpected token o in JSON at position 1
at JSON.parse (<anonymous>)
at fetch.then (/Users/me/Desktop/test_json/index.js:11:30)
at process._tickCallback (internal/process/next_tick.js:68:7)

Answer 1

The fetch api returns a Body object
you can call Body.json()
Using async/await:
const body = await fetch(url);
const json = await body.json();
console.log(json);
Using promises:
fetch(url).then((stock) => {
return stock.json()
}).then(json => {
console.log(json);
});
JSON.parse:
fetch(url).then((stock) => {
return stock.text()
}).then(text => {
console.log(JSON.parse(text));
});

Answer 2

You need to pass the body in json parse like bellow,
JSON.parse(stock.text())
Or you can directly use json data without parsing just using stock.json() function