Terminal-based playground

Nix users may also find the playground script to be helpful in aiding the interactive development of query files. When run in a terminal, inside the devshell defined in the Nix flake, it will format the given source input with the requested query file, updating the output on any inotify event against those files.

Usage: playground LANGUAGE [QUERY_FILE] [INPUT_SOURCE]

LANGUAGE can be one of the supported languages (e.g., "ocaml", "rust",
etc.). The packaged formatting queries for this language can be
overridden by specifying a QUERY_FILE.

The INPUT_SOURCE is optional. If not specified, it defaults to trying
to find the bundled integration test input file for the given language.

The script itself is very basic -- that cannot be overstated! -- but it provides a fast enough feedback loop to be useful. For example, the playground can be run in a terminal emulator/multiplexer pane, with your editor of choice open in another.