@nestjs/cli/lib/package-managers/package-manager.factory.js

Nest - modern, fast, powerful node.js web framework (@cli)

import * as fs from 'fs';
import { NpmPackageManager } from './npm.package-manager.js';
import { PackageManager } from './package-manager.js';
import { YarnPackageManager } from './yarn.package-manager.js';
import { PnpmPackageManager } from './pnpm.package-manager.js';
import { BunPackageManager } from './bun.package-manager.js';
export class PackageManagerFactory {
    static create(name) {
        switch (name) {
            case PackageManager.NPM:
                return new NpmPackageManager();
            case PackageManager.YARN:
                return new YarnPackageManager();
            case PackageManager.PNPM:
                return new PnpmPackageManager();
            case PackageManager.BUN:
                return new BunPackageManager();
            default:
                throw new Error(`Package manager ${name} is not managed.`);
        }
    }
    static async find() {
        const DEFAULT_PACKAGE_MANAGER = PackageManager.NPM;
        try {
            const files = await fs.promises.readdir(process.cwd());
            const hasYarnLockFile = files.includes('yarn.lock');
            if (hasYarnLockFile) {
                return this.create(PackageManager.YARN);
            }
            const hasPnpmLockFile = files.includes('pnpm-lock.yaml');
            if (hasPnpmLockFile) {
                return this.create(PackageManager.PNPM);
            }
            const hasBunLockFile = ['bun.lock', 'bun.lockb'].some((lockFile) => files.includes(lockFile));
            if (hasBunLockFile) {
                return this.create(PackageManager.BUN);
            }
            return this.create(DEFAULT_PACKAGE_MANAGER);
        }
        catch {
            return this.create(DEFAULT_PACKAGE_MANAGER);
        }
    }
}