diffservice1.js

const token = 'token';
var parse = require('parse-diff');
const octokit = require('@octokit/rest')();
octokit.authenticate({
    type: 'oauth',
    token: token
});

async function getFiles(org, repo, prNumber) {
    let result = {};
    let diffPrResponse = await octokit.pullRequests.get({ owner: org, repo: repo, number: prNumber, headers: { accept: 'application/vnd.github.v3.diff' } });
    var diff = diffPrResponse.data;
    var files = parse(diff);
    return files;
}