ion/4.2.0/module/ChildProcess#spawn) except that it notifies the application when the child process exits and which code it exited with.\\n\\nThis is just a temporary fix. We intend to rewrite the [ChildProcess](https://packages.gren-lang.org/package/gren-lang/node/version/4.2.0/module/ChildProcess) module in the next major release in order to clean up the API and add new functionality.\\n\\n## New functions\\n\\nBesides the new [Array.Builder](https://packages.gren-lang.org/package/gren-lang/core/version/5