Blame for packages/kaos/test/fixtures/killtree.cjs

// Helper for the Windows process-tree kill test (test/local.test.ts).
//
// Boots a parent → child → grandchild chain and writes the grandchild's pid
// to the path passed as `process.argv[2]`, then idles so the test can kill
// the parent and assert the grandchild is reaped too.
//
// Lives in a real file (rather than an inline `node -e` string) so the path
// travels via argv instead of being embedded in nested template literals —
// inline multi-line `node -e` with backslash paths gets mangled by Node's
// Windows arg-quoting and by JS string escapes (`\f` etc.).

const { spawn } = require('node:child_process');

const pidPath = process.argv[2];
if (!pidPath) {
  process.exit(2);
}

// Single-line child code: no newlines, no nested template literals, and the
// pid path comes from argv (not a string literal), so it survives Windows
// arg-quoting intact.
const childCode = [
  "const { spawn } = require('node:child_process');",
  "const { writeFileSync } = require('node:fs');",
  "const g = spawn(process.execPath, ['-e', 'setTimeout(() => {}, 60000)']);",
  'writeFileSync(process.argv[1], String(g.pid));',
  'setInterval(() => {}, 1000);',
].join(' ');

spawn(process.execPath, ['-e', childCode, pidPath], { stdio: 'inherit' });
setInterval(() => {}, 1000);