Support custom file processors with external commands

[yamadashy]

Allow running external commands on files before packing, enabling transformations like JSON to TOON format conversion.

Configuration Example

{
  "fileProcessors": {
    "**/*.json": "npx @toon-format/cli {file}"
  }
}

Implementation

• Match files with glob patterns
• Write content to temp file, replace `{file}` placeholder
• Execute command and capture stdout
• Use transformed output in packed result

Use Cases

• JSON to TOON format (token reduction for LLMs)
• SVG minification
• Custom file preprocessing

Related

• TOON format: https://github.com/toon-format/toon
• Discord discussion: https://discord.com/channels/1324644561959522314/1324644562429542425/1434811514937802802

[Benexl]

it could even be helpful in preprocessing pdfs to markdown, so they can be embed in the repomix