Interface PoolOptions

Run tests in node:child_process using fork()

Test isolation (when enabled) is done by spawning a new child process for each test file.

Run tests in node:worker_threads.

Test isolation (when enabled) is done by spawning a new thread for each test file.

This pool is used by default.

Run tests in isolated node:vm. Test files are run parallel using node:worker_threads.

This makes tests run faster, but VM module is unstable. Your tests might leak memory.