nodesync-cli/core/suggestVersion.js

A smart CLI tool to auto-detect, install, and manage the right Node.js version for your project.

import fs from 'fs';
import path from 'path';

const DEFAULT_LTS_VERSION = '18.18.2'; // Safe LTS fallback

export async function suggestVersion(projectRoot = process.cwd()) {
  const pkgPath = path.join(projectRoot, 'package.json');

  if (!fs.existsSync(pkgPath)) {
    console.warn('⚠️ No package.json found. Defaulting to Node.js LTS.');
    return { source: 'default', version: DEFAULT_LTS_VERSION };
  }

  try {
    const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf-8'));

    const deps = Object.keys(pkg.dependencies || {});
    const devDeps = Object.keys(pkg.devDependencies || {});
    const allPackages = [...deps, ...devDeps];

    // In future, check known Node compat per package here

    console.log(`📊 Found ${allPackages.length} dependencies. Defaulting to safe LTS.`);

    return { source: 'suggested', version: DEFAULT_LTS_VERSION };
  } catch (err) {
    console.warn('⚠️ Could not parse package.json. Falling back to LTS.');
    return { source: 'default', version: DEFAULT_LTS_VERSION };
  }
}