README.ts

import * as Handlebars from "handlebars";
import * as request from 'request';
import * as util from 'util';

import { readFile, writeFile } from "./lib/utility/fs";

import { execSync } from "child_process";

Handlebars.registerHelper('bash', function (command: string) {
    return execSync(command).toString().replace(/\[\d{1,2}m/gi, '')
})

async function fromGithub (endpoint: string) {
    return util.promisify(request)({
            method: 'GET',
            url: 'https://api.github.com/' + endpoint,
            json: true,
            headers: { 'User-Agent': 'README generator' }
        }).then(response => response.body)
}

Promise
    .all([
        readFile('./README.handlebars', 'utf8'),
        fromGithub('repos/2fd/graphdoc'),
        fromGithub('repos/2fd/graphdoc/contributors').then(contributors => contributors.filter(c => c.login !== '2fd') ),
    ])
    .then(([template, project, contributors]) => {
        return writeFile('README.md',  Handlebars.compile(template)({project, contributors}))
    })