all-contributors-diff.js

const fs = require('fs');
const fetch = require('node-fetch');

fetch('https://api.github.com/repos/gitpoint/git-point/contributors?per_page=100').then(response => {
  response.json().then(json => {
    const realContributors = json.map(el => el.login);
    const knownContributors = JSON.parse(fs.readFileSync('.all-contributorsrc')).contributors.map(el => el.login);
    const diff = realContributors.filter(el => knownContributors.indexOf(el) === -1);

    process.stdout.write(`Contributors length from GH: ${realContributors.length}\n`);
    process.stdout.write(`Contributors length from AC: ${knownContributors.length}\n`);
    process.stdout.write(`Diff: ${diff}\n`);
  });
});