Use this when you are working on file operations like reading, writing, scanning, or deleting files. It summarizes the preferred file APIs and patterns used in this repo...
SKILL.md
Use this when
Editing file I/O or scans in packages/jonsoc
Handling directory operations or external tools
Bun file APIs (from Bun docs)
Bun.file(path) is lazy; call text, json, stream, arrayBuffer, bytes, exists to read.
Metadata: file.size, file.type, file.name.
Bun.write(dest, input) writes strings, buffers, Blobs, Responses, or files.
Bun.file(...).delete() deletes a file.
file.writer() returns a FileSink for incremental writes.
Bun.Glob + Array.fromAsync(glob.scan({ cwd, absolute, onlyFiles, dot })) for scans.
Use Bun.which to find a binary, then Bun.spawn to run it.
Bun.readableStreamToText/Bytes/JSON for stream output.
When to use node:fs
Use node:fs/promises for directories (mkdir, readdir, recursive operations).
Repo patterns
Prefer Bun APIs over Node fs for file access.
Check Bun.file(...).exists() before reading.
For binary/large files use arrayBuffer() and MIME checks via file.type.
Use Bun.Glob + Array.fromAsync for scans.
Decode tool stderr with Bun.readableStreamToText.
For large writes, use Bun.write(Bun.file(path), text).
Quick checklist
Use Bun APIs first.
Use path.join/path.resolve for paths.
Prefer promise .catch(...) over try/catch when possible.
