Function runShim

__tests__/npm-shim.test.ts:71–81

(pkgDir: string, args: string[], env: Record<string, string>)

// Launch the shim with async spawn so the in-process HTTPS server can respond
// while it runs (spawnSync would block this event loop and deadlock).
function runShim(pkgDir: string, args: string[], env: Record<string, string>) {
  return new Promise<{ status: number | null; stdout: string; stderr: string }>((resolve) => {
    const child = spawn(process.execPath, [path.join(pkgDir, 'npm-shim.js'), ...args], {
      env: { ...process.env, ...env },
    });
    let stdout = '', stderr = '';
    child.stdout.on('data', (d) => { stdout += d.toString(); });
    child.stderr.on('data', (d) => { stderr += d.toString(); });
    child.on('close', (status) => resolve({ status, stdout, stderr }));
  });
}

// Static source guard (all platforms): every child spawn in the shim must set
// windowsHide, or a console (conhost) window flashes when the shim runs as a