node-version-use/dist/esm/commands/local.js

Cross-platform solution for using multiple versions of node. Useful for compatibility testing

import exit from 'exit-compat';
import fs from 'fs';
import path from 'path';
/**
 * nvu local [version] [--nvurc]
 *
 * Write .nvmrc (or .nvurc) to the current directory.
 * This pins the Node version for the current project.
 */ export default function localCmd(args) {
    const cwd = process.cwd();
    // Check for --nvurc flag (indexOf for Node 0.8+ compat)
    const useNvurc = args.indexOf('--nvurc') !== -1;
    const filteredArgs = args.filter((arg)=>arg !== '--nvurc');
    const fileName = useNvurc ? '.nvurc' : '.nvmrc';
    const filePath = path.join(cwd, fileName);
    // If no version provided, display current local version
    if (filteredArgs.length === 0) {
        // Check for existing version files
        const nvurcPath = path.join(cwd, '.nvurc');
        const nvmrcPath = path.join(cwd, '.nvmrc');
        if (fs.existsSync(nvurcPath)) {
            const version = fs.readFileSync(nvurcPath, 'utf8').trim();
            console.log(`Current local version (.nvurc): ${version}`);
            exit(0);
            return;
        }
        if (fs.existsSync(nvmrcPath)) {
            const version = fs.readFileSync(nvmrcPath, 'utf8').trim();
            console.log(`Current local version (.nvmrc): ${version}`);
            exit(0);
            return;
        }
        console.log('No local version set in this directory.');
        console.log('Usage: nvu local <version>');
        console.log('       nvu local <version> --nvurc  (use .nvurc instead of .nvmrc)');
        exit(0);
        return;
    }
    const version = filteredArgs[0].trim();
    // Validate version format (basic check, indexOf for Node 0.8+ compat)
    if (!version || version.indexOf('-') === 0) {
        console.log('Usage: nvu local <version>');
        console.log('Example: nvu local 20');
        exit(1);
        return;
    }
    // Write the version file
    fs.writeFileSync(filePath, `${version}\n`, 'utf8');
    console.log(`Created ${fileName} with version: ${version}`);
    exit(0);
}