Version Badge

version-badge.js

const querystring = require('querystring');
const semver = require("semver");
const dateFns = require("date-fns");

const versionDates = {
  // https://nodejs.org/en/about/releases/
  // https://endoflife.date/nodejs
  nodejs: [
    { version: "16.x", eol: "2024-04-30" },
    { version: "15.x", eol: "2021-06-01" },
    { version: "14.x", eol: "2023-04-30" },
    { version: "13.x", eol: "2020-06-01" },
    { version: "12.x", eol: "2022-04-30" },
    { version: "10.x", eol: "2021-04-30" },
    { version: "8.x", eol: "2019-12-31" },
  ],
  // https://www.php.net/supported-versions.php
  // https://endoflife.date/php
  php: [
    { version: "7.4.x", eol: "2022-11-28" },
    { version: "7.3.x", eol: "2021-12-06" },
    { version: "7.2.x", eol: "2020-11-30" },
    { version: "7.1.x", eol: "2019-12-01" },
    { version: "7.0.x", eol: "2019-01-01" },
    { version: "5.6.x", eol: "2018-12-31" },
  ],
};

exports.endpoint = function(request, response) {
  const [ _, lang, versionRaw ] = request.url.split('/');
  const version = querystring.unescape(versionRaw);

  if (!lang || !versionDates[lang]) {
    response.statusCode = 400;
    return response.end(`Invalid lang`);
  }

  if (!semver.valid(semver.coerce(version))) {
    response.statusCode = 400;
    return response.end(`Invalid version`);
  }
  
  const v = versionDates[lang].find(v => semver.satisfies(semver.coerce(version), v.version));
  console.log({ version, coerce: semver.coerce(version).toString(), v })
  
  if (!v) {
    response.statusCode = 404;
    return response.end(`Version not found`);
  }
  
  // https://badgen.net/runkit
  response.end(JSON.stringify({
    subject: `${lang} ${version}`,
    status: v.eol,
    color: dateFns.isPast(dateFns.parseISO(v.eol)) ? "red" : "green"
  }));
}

DEPRECATED
see https://github.com/cvuorinen/version-badge instead