Use the filesystem as a computing environment.

make build-plugins # requires Rust toolchain
make run # requires Go toolchain

• plugins/invert: invert the colors of a PNG file

  • add a new PNG to the directory containing this .wasm plug-in
  • see new PNG replacing the original with inverted colors

• plugins/md2html: convert Markdown in to HTML files

  • add a Markdown file to the directory containing this .wasm plug-in
  • see a new HTML file generated next to the Markdown file

The host program runs a recursive watcher, to build the initial structure, and all new directories with files .wasm are watched and computed.

For each file create operation, the .wasm is loaded and passed the file that triggered the event.

This program treats a directory, a written file, and a single .wasm module as the unit of computation.

1. Host -> Plug-in

{
  "event_file_name": "path/to/file.md",
  "event_file_data": "<base64 encoded file>"
}

2. Plug-in -> Host

{
  "op": "create",
  "output_file_name": "path/to/file.md",
  "output_file_data": "<base64 encoded file>"
}