@code-pushup/js-packages-plugin/src/lib/package-managers/derive-package-manager.js

Code PushUp plugin for JavaScript packages 🛡️

import { readFile } from 'node:fs/promises';
import path from 'node:path';
import { fileExists } from '@code-pushup/utils';
import { deriveYarnVersion } from './derive-yarn.js';
export async function derivePackageManagerInPackageJson(currentDir = process.cwd()) {
    if (await fileExists(path.join(currentDir, 'package.json'))) {
        const content = JSON.parse((await readFile(path.join('package.json'))).toString());
        const { packageManager: packageManagerData = '' } = content;
        const [manager = '', version = ''] = packageManagerData.split('@');
        if (manager === 'npm') {
            return manager;
        }
        if (manager === 'pnpm') {
            return manager;
        }
        if (manager === 'yarn') {
            const majorVersion = Number(version.split('.')[0]);
            return majorVersion > 1 ? 'yarn-modern' : 'yarn-classic';
        }
    }
    return false;
}
export async function derivePackageManager(currentDir = process.cwd()) {
    const pkgManagerFromPackageJson = await derivePackageManagerInPackageJson(currentDir);
    if (pkgManagerFromPackageJson) {
        return pkgManagerFromPackageJson;
    }
    // Check for lock files
    if (await fileExists(path.join(currentDir, 'package-lock.json'))) {
        return 'npm';
    }
    else if (await fileExists(path.join(currentDir, 'pnpm-lock.yaml'))) {
        return 'pnpm';
    }
    else if (await fileExists(path.join(currentDir, 'yarn.lock'))) {
        const yarnVersion = await deriveYarnVersion();
        if (yarnVersion) {
            return yarnVersion;
        }
    }
    throw new Error('Could not detect package manager. Please provide it in the js-packages plugin config.');
}
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