drgnxd/languages

Bash

• Use strict mode by default: set -euo pipefail.
• Quote variable expansions as "${var}".
• Validate required inputs before using them.
• Preferred pattern: readonly V="${1}"; [[ -n "$V" ]] || exit 1.
• Avoid unsafe patterns like unquoted expansion in destructive commands (for example rm -rf $V).

Python

• Follow PEP 8 and include type hints where practical.
• Prefer pathlib over legacy path APIs.
• Do not use mutable default arguments.
• Use uv workflows:
  • Create env: uv venv
  • Install deps: uv pip install <pkg>
  • Run scripts: uv run script.py
• Forbidden tools: pip, python -m venv, virtualenv.
• Import grouping order: standard library, third-party, local modules.
• Target line length: 88.

JavaScript / TypeScript

• Prefer const/let over var.
• Use strict equality (===, !==).
• Prefer async/await over callback-heavy style.
• Avoid any unless explicitly justified.
• Acceptable async pattern: const d = await fetch(u).then(r => r.json()).

Rust

• Keep code rustfmt and clippy clean.
• Prefer Result/Option propagation over unwrap() in non-test code.
• Prefer iterator-based style over manual index loops.
• Prefer explicit result signatures such as fn read(p: &Path) -> Result<String>.

Nushell

• Prefer structured data pipelines and immutable transformations.
• Use explicit typing and schema-preserving transformations when possible.
• Common table filter pattern: ls | where size > 1mb | select name size.
• Common transform pattern: open data.json | each { |x| $x.value * 2 }.
• Error handling pattern: do { cmd } | complete | if $in.exit_code != 0 { error make {...} }.
• Structured file conversion: open data.csv | from csv | save output.json.
• Environment update pattern: $env.PATH = ($env.PATH | append "/path").
• Interop with external commands via ^cmd or bash -c when needed.
• Avoid eval and unchecked run-external usage.