farjs-app/dist/versionChecker.mjs

FAR.js - Cross-platform File and Archive Manager app in your terminal

export default {};

import https from 'https';
import { readFile } from 'fs/promises';

const packageJson = JSON.parse(
  await readFile(new URL('../package.json', import.meta.url), 'utf8')
);

export function fetchLatestVersion() {
  return new Promise((resolve, reject) => {
    const httpOptions = {
      headers: {
        'accept-encoding': 'utf8',
      },
    };
    https.get(`https://registry.npmjs.org/${packageJson.name}/latest`, httpOptions, (resp) => {
      try {
        const { statusCode } = resp;
        const contentType = resp.headers['content-type'];
      
        let error;
        if (statusCode !== 200) {
          error = new Error('Request Failed.\n' +
                            `Status Code: ${statusCode}`);
        } else if (!/^application\/json/.test(contentType)) {
          error = new Error('Invalid content-type.\n' +
                            `Expected application/json but received ${contentType}`);
        }
        if (error) {
          resp.resume(); // Consume response data to free up memory
          reject(error.message);
          return;
        }
      
        let rawData = '';
        resp.setEncoding('utf8');
        resp.on('data', (chunk) => { rawData += chunk });
        resp.once('end', () => {
          try {
            const parsedData = JSON.parse(rawData);
            resolve(parsedData.version);
          } catch (e) {
            reject(e);
          }
        })
      } catch (e) {
        reject(e);
      }
    }).once('error', (e) => {
      reject(e);
    });
  });
}

function green(text) {
  return '\u001b[32m' + text + '\u001b[39m';
}

export function checkNpmVersion(npmVersion) {
  if (npmVersion && npmVersion != packageJson.version) {
    console.log(green(
`
  There is a newer version of ${packageJson.name} available: ${npmVersion}
  (You are currently using version: ${packageJson.version})

  Install FAR.js globally using the package manager of your choice.
  For example, to get the latest version:

    npm i -g ${packageJson.name}

  See the changelog here: https://github.com/farjs/farjs/releases
`
    ));
  }
}