rosetta bun-not-node.instructions.md

A set of project instructions for Rosetta, a Bun project, where Bun is a JavaScript runtime with its own server, database, and command tools.

In plain words
What is it for?
Use it when changing Rosetta code or instructions to keep Bun APIs, ESM imports with .ts extensions, and Bun-native commands consistent.
Why use it?
It prevents code and documentation from replacing Bun-specific tools with Node.js alternatives that do not match the project requirements.

Instructions file for GitHub Copilot

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/tikoci/rosetta/bun-not-node
Clone the repo
git clone --depth 1 https://github.com/tikoci/rosetta

Made for: GitHub Copilot.

Per session 138 This file is loaded in full into every session.
When invoked 138 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00138 $0.00138
Opus 5 $0.00069 $0.00069
Sonnet 5 $0.00028 $0.00028
Haiku 4.5 $0.00014 $0.00014

Measured 2d ago against content hash 9dfa7984d696, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rosetta bun-not-node.instructions.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/instructions/bun-not-node.instructions.md · 13 lines

What it actually says

Bun, not Node

Rosetta is a Bun project.

  • Use bun:sqlite, Bun.serve, and bunx.
  • Do not swap in Node-oriented substitutes such as better-sqlite3, Express, or npx.
  • Keep imports as ESM with .ts extensions in repo source.
  • When documentation mentions local install or execution, prefer Bun-native commands.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 13 lines · 138 tokens per session scan A 9dfa7984d696

Subscribe to this mod's changes

rosetta bun-not-node.instructions.md is an instructions file published in the GitHub repository tikoci/rosetta (43 stars, last pushed 16d ago), licensed MIT. It adds 138 tokens to every session, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other instructions, from other repositories