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

Code PushUp plugin for JavaScript packages 🛡️

import { executeProcess } from '@code-pushup/utils';
export async function deriveYarnVersion() {
    const { stdout } = await executeProcess({
        command: 'yarn',
        args: ['-v'],
    });
    const yarnVersion = Number.parseInt(stdout.toString().trim().at(0) ?? '', 10);
    if (yarnVersion >= 2) {
        return 'yarn-modern';
    }
    else if (yarnVersion === 1) {
        return 'yarn-classic';
    }
    return false;
}
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