policy: Bun is tier 1, Deno is being removed — correct local CLAUDE.md - #132
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Owner ruling 2026-08-26: "deno is to go and bun is the way we are going, put it
first everywhere unless not possible and explain why if not".
This file is what an agent reads FIRST and it listed Bun as BANNED with Deno as
its replacement. Correcting hyperpolymath/standards (#655) fixes one copy of
~372 - agents read the local one. This is that local copy.
ALLOWED **Deno** "Replaces Node/npm/bun" -> **Bun** tier 1
BANNED | Bun | Deno | -> row REMOVED
BANNED Node.js / npm / pnpm/yarn -> Deno -> -> Bun
rule "No package.json for runtime deps - use deno.json imports"
-> Use package.json + bun.lock; a manifest is REQUIRED
rule "No node_modules in production"
-> bun install --production, pinned via bun.lock
pkg JS deps: Deno -> JS deps: Bun (package.json + bun.lock), bunx
WHY THE MANIFEST RULE MATTERS MOST. "No package.json for runtime deps" did not
express a preference - it told repos not to declare their dependencies at all.
hyperpolymath/ubicity imported zod and glob, shipped NO manifest of any kind,
and could not build under ANY toolchain. Fixed in ubicity#107; the rule that
caused it is fixed here.
ALSO REPAIRED - blanking scars from the ReScript purge, which substituted the
token with an EMPTY STRING rather than removing the text:
| | AffineScript | -> | ReScript | AffineScript |
1. **No new files** ... -> **No new ReScript files** ...
| **JavaScript** | Only where cannot | -> Only where AffineScript cannot
Restoring the NAME in a policy table does not reintroduce the language. Same
root cause as the rm -rf /lib found in wordpress-tools#62.
Policy text only - no code, no workflows, no build files. 1 file(s).
NOT FOLDED IN: "Fallback: Nix (flake.nix)" is stale (Guix superseded Nix per
ADR-2026-STACK-MIGRATION) but that is a separate ruling; flagged, not changed.
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🧰 Additional context used🪛 LanguageTool.claude/CLAUDE.md[misspelling] ~23-~23: Use “a” instead of ‘an’ if the following word doesn’t start with a vowel sound, e.g. ‘a sentence’, ‘a university’. (EN_A_VS_AN) [misspelling] ~23-~23: This word is normally spelled as one. (EN_COMPOUNDS_ANTI_PATTERNS) 🔇 Additional comments (2)
📝 WalkthroughSummary by CodeRabbit
WalkthroughThe project guidance replaces Deno with Bun for JavaScript runtime, package management, dependency installation, banned-tool replacements, and one-off tooling. ChangesRuntime policy
Estimated code review effort: 1 (Trivial) | ~5 minutes Merge Risk: ⚪ Minimal · up to This is a localized policy-documentation update with no actionable merge-blocking risk remaining after normal checks and review. Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
Full details: Docstring CoverageExplanation No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.) Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
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Up to standards ✅🟢 Issues
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Pull Request Overview
This PR updates the .claude/CLAUDE.md policy to establish Bun as the Tier 1 JS/TS runtime, replacing Deno and mandating specific dependency management tools. While the core transition is implemented, there is a significant gap between the PR description and the actual changes; specifically, the restoration of ReScript policy 'blanking scars' is entirely missing from the diff. Additionally, while Deno is removed from the allowed tools, it has not been explicitly added to the BANNED table. Codacy results indicate the PR is up to standards, but these policy omissions should be addressed to ensure the AI assistant adheres strictly to the new runtime and language constraints.
About this PR
- The PR description mentions repairing 'blanking scars' from a previous ReScript purge (e.g., restoring the ReScript name in policy tables and Rule 1), but these changes are absent from the diff. Rule 1 still only mentions TypeScript/AffineScript. Please ensure these intended policy restorations are included.
Test suggestions
- Verify Bun is defined as the Tier 1 runtime and default for new work in the ALLOWED table.
- Verify Deno is replaced by Bun as the target for Node.js/npm in the BANNED table.
- Verify enforcement rules require package.json and bun.lock manifests.
- Verify enforcement rules require 'bun install --production' for production.
- Verify ReScript text is restored to Rule 1 and the banned language table (blanking scars).
Prompt proposal for missing tests
Consider implementing these tests if applicable:
1. Verify ReScript text is restored to Rule 1 and the banned language table (blanking scars).
TIP Improve review quality by adding custom instructions
TIP How was this review? Give us feedback
| | Node.js | Bun | | ||
| | npm | Bun | | ||
| | pnpm/yarn | Bun | |
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🟡 MEDIUM RISK
Suggestion: Since Deno is being replaced by Bun as the Tier 1 runtime, it should be explicitly listed in the BANNED table. This prevents the AI assistant from suggesting Deno-specific configurations or APIs when standard patterns fail.
| | Node.js | Bun | | |
| | npm | Bun | | |
| | pnpm/yarn | Bun | | |
| pnpm/yarn | Bun | | |
| Deno | Bun | |
Review feedback from codacy-production and coderabbitai on the policy wave. Three substantive points, all accepted: 1. ".ts CONTRADICTION" (codacy, MEDIUM, raised on most of the wave). The Bun row said "Executes .ts directly, no build step" in a file whose BANNED table bans TypeScript. OWNER RULING: TypeScript "should not exist at all", so advertising Bun's TypeScript capability is wrong regardless of whether it is true. Every .ts reference is removed from the row, including "JS/TS" in its label. 2. "DENO MISSING FROM BANNED" (codacy, raised repeatedly). The wave removed Deno from ALLOWED but never added it to BANNED, so the ruling was only half expressed. Added | Deno | Bun |. 3. "UNPINNED bunx" (coderabbitai, Security & Privacy). A bare `bunx <tool>` can fetch a package outside package.json/bun.lock, and can start Node via a shebang - both contrary to estate SHA-pinning doctrine and the Node ban. Guidance now requires a declared devDependency plus `bunx --no-install --bun <tool>`. NOT taken: "a npm-compatible" (LanguageTool is wrong, "an" is correct before a vowel sound); "--frozen-lockfile is redundant" (correct - no change needed, and none made); the Nix->Guix point (real, but a separate ruling, deliberately not folded into a Deno/Bun change).
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1 participant
Owner ruling, 2026-08-26:
This repo's
.claude/CLAUDE.mdis what an agent reads first. Correctinghyperpolymath/standards(#655) fixes one copy of ~372 — agents read the local one.What this PR actually changes
Every line below was verified present in this PR's own diff — nothing is claimed that isn't here.
| Bun | Deno |row removedpackage.json+bun.lock)bun install --productionreplaces the node_modules rulebunx --no-install --bunOnly where cannot→ Only where AffineScript cannot| **** |→ AffineScriptReview feedback addressed
.tsdirectly" inside a file that bans TypeScript. Owner ruling: TypeScript should not exist at all — so every.tsreference is gone from the row, including JS/TS in its label. It now reads JS runtime, running compiled ESM/JS.bunx(coderabbitai, Security & Privacy): a barebunx <tool>can fetch a package outsidebun.lockand can start Node via a shebang. Guidance now requires a declared devDependency plusbunx --no-install --bun.Not taken: "a npm-compatible" (LanguageTool is wrong — "an" is correct before a vowel sound); "
--frozen-lockfileis redundant" (correct, and no such flag was added); the Nix → Guix point (real, but a separate ruling — deliberately not folded into a Deno/Bun change).Scope
Policy text only — no code, no workflows, no build files.
Related: #655 (governing document), #658 (Deno→Bun assessment: 18 repos blocked on
@affinescript/*npm packages that do not exist), #659 (policy duplicated into ~372 copies).