If there are big numbers in response, how can we process them?

[djheart0710]

In my project, I use fetch to process request. The result contains big numbers, which exceed the max number in JS. After response.json() , I got the data, but the big number data has already became wrong. For example, I got 14355897211814021 in Postman, but in project, I got 14355897211814020. How can I process the response got by fetch? Thanks!

[mderijcke]

This is how V8's JSON.parse works. You can use lossless-json for this though.

Use it like this:

const fetch = require('isomorphic-fetch');
const LosslessJSON = require('lossless-json');

setImmediate(async () => {
    let response = await fetch(/* ... */);

    let json = LosslessJSON.parse(await response.text());

    console.log(json);
});

[jimmywarting]

or perhaps use json-bigint?

[matthew-andrews]

Interesting problem ! Believe your question has been answered … …