npm-install-size/lib/interactive.js

Check the install size of any NPM package before installing it.

import inquirer from 'inquirer';

export async function promptForOptions() {
  const { packages } = await inquirer.prompt([
    {
      type: 'input',
      name: 'packages',
      message: 'Enter package names (comma separated):',
      filter: input => input.split(',').map(s => s.trim()).filter(Boolean)
    }
  ]);
  const { flags } = await inquirer.prompt([
    {
      type: 'checkbox',
      name: 'flags',
      message: 'Select options:',
      choices: [
        { name: 'JSON output (--json)', value: 'json' },
        { name: 'Summarize (--summarize)', value: 'summarize' },
        { name: 'CSV output (--csv)', value: 'csv' },
        { name: 'Markdown output (--md)', value: 'md' },
        { name: 'Dependency tree (--deps)', value: 'deps' },
        { name: 'Minified size (--minified)', value: 'minified' },
        { name: 'Gzipped size (--gzipped)', value: 'gzipped' },
        { name: 'File type breakdown (--types)', value: 'types' },
        { name: 'Compare mode (--compare)', value: 'compare' },
        { name: 'Badge (--badge)', value: 'badge' }
      ]
    }
  ]);
  const { topN } = await inquirer.prompt([
    {
      type: 'input',
      name: 'topN',
      message: 'Show top N largest files (--top N):',
      validate: v => !v || (!isNaN(parseInt(v, 10)) && parseInt(v, 10) > 0) || 'Enter a positive number',
      filter: v => v ? parseInt(v, 10) : null
    }
  ]);
  const { historyN } = await inquirer.prompt([
    {
      type: 'input',
      name: 'historyN',
      message: 'Show history for last N versions (--history N):',
      validate: v => !v || (!isNaN(parseInt(v, 10)) && parseInt(v, 10) > 0) || 'Enter a positive number',
      filter: v => v ? parseInt(v, 10) : null
    }
  ]);
  return {
    packages,
    json: flags.includes('json'),
    summarize: flags.includes('summarize'),
    csv: flags.includes('csv'),
    md: flags.includes('md'),
    deps: flags.includes('deps'),
    minified: flags.includes('minified'),
    gzipped: flags.includes('gzipped'),
    types: flags.includes('types'),
    compare: flags.includes('compare'),
    badge: flags.includes('badge'),
    topN,
    historyN
  };
}