generator.js

const chalk = require('chalk');
const inquirer = require('inquirer');
const replace = require('replace-in-file');
const fs = require('fs');
const { version } = require('./package.json');

const logger = (text, color = 'red') => console.log(chalk[color](text));

const base = './variables/.env';
fs.writeFile(base, '', (err) => err);

const generateFiles = (env) => {
  fs.copyFile(`${base}.example`, `${base}.${env}`, (error) => {
    if (error) logger(`Setting ${env} environment file caused an error: ${error}`);
    replace({ files: [`${base}.${env}`], from: 'ENVIRONMENT =', to: `ENVIRONMENT = ${env}` })
      .catch(() => logger(`Replacing value of ${env} environment variable caused an error`));
  });
};
['local', 'development', 'production'].forEach(generateFiles);

const questions = [
  {
    type: 'input',
    name: 'name',
    message: 'The name of your project is...?',
    default: 'Starter',
  },
  {
    type: 'input',
    name: 'description',
    message: 'What\'s the proper description of this project?',
    default: 'Quasar template for quickly starting projects',
  },
  {
    type: 'input',
    name: 'version',
    message: 'Starting this project at version...?',
    default: `${version}`,
  },
];

inquirer.prompt(questions)
  .then(async (answers) => {
    await replace({ files: ['./package.json', './quasar.config.js', './README.md', './src/App.vue', './src-pwa/manifest.json'], from: /ExampleName/g, to: answers.name })
      .catch((error) => logger(`Project name caused an error: ${error}`));

    await replace({ files: ['./package.json', './quasar.config.js', './README.md', './src-pwa/manifest.json'], from: /ExampleDescription/g, to: answers.description })
      .catch((error) => logger(`Setting description caused an error: ${error}`));

    if (/^([0-9]+)\.([0-9]+)\.([0-9]+)/gm.test(answers.version)) {
      await replace({ files: ['./package.json', './package-lock.json'], from: `${version}`, to: answers.version })
        .catch((error) => logger(`Setting version caused an error: ${error}`));
    } else {
      logger(`Inputted version number does not comply with semantic versioning scheme; used default ${version}`, 'yellow');
    }
  })
  .then(() => {
    const helper = ['', '### Install the dependencies', '', '```bash', 'npm i', '```'];

    replace({
      files: ['./README.md'],
      processor: (input) => {
        const lines = input.split('\n');

        lines.splice(3, 7, ...helper);

        return lines.join('\n');
      },
    }).catch((error) => logger(`Setting version caused an error: ${error}`));
  })
  .catch((error) => {
    if (error.isTtyError) logger('Prompt couldn\'t be rendered in the current environment.');
    else logger(`An error occurred: ${error}`);
  })
  .finally(() => {
    logger('\n\nCongrats! Now you can start developing your awesome application!\n\n', 'green');
  });

fs.rmSync('generator.js', { recursive: true, force: true });