index.js

const fetch = require('node-fetch');
const http =  require('http');
const fs = require('fs')
var url = require('url');
const reducer = (accumulator, currentValue) => accumulator + currentValue.contributions;
fetch('https://api.github.com/repos/sindresorhus/caprine')
.then(res => res.json())
.then((json) => {
	var out = {}
	out.forks = json.forks;
	out.open_issues = json.open_issues;
	out.watchers = json.watchers;
	out.stargazers = json.stargazers_count;
	out.subscribers = json.subscribers_count;
	fetch('https://api.github.com/repos/sindresorhus/caprine/contributors')
	.then(res => res.json())
	.then((json) => {
		out.contributors_count = json.length;
		out.commits = json.reduce(reducer, 0);
		out.total_lines = 1372;
		out.code_lines = 1216;
		console.log(JSON.stringify(out));

    fs.writeFile("out.json", JSON.stringify(out), function(err) {
    if(err) {
        return console.log(err);
    }

    console.log("The file was saved!");
});
	})
});