policy: Bun is tier 1, Deno is being removed — correct local CLAUDE.md - #57
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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NOT FOLDED IN: "Fallback: Nix (flake.nix)" is stale (Guix superseded Nix per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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Up to standards ✅🟢 Issues
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Pull Request Overview
The PR successfully initiates the transition to Bun as a Tier 1 runtime and removes Deno references. However, the secondary objective of correcting the 'automated language purge' (renaming ReScript to AffineScript) is incomplete and inconsistent. Multiple references to ReScript remain in critical sections like the allowed languages table, banned list, and enforcement rules (specifically lines 22, 40, 45, 55, and 66), which will cause conflicting instructions for AI agents using this CLAUDE.md file.
Additionally, there is a discrepancy between the PR description and the actual changes in the diff. The 'repaired' version of Rule 1 described in the PR summary does not match the implementation, which still refers to TypeScript instead of the intended ReScript-to-AffineScript conversion rule. These inconsistencies should be resolved before merging to maintain the integrity of the project's policy documentation.
About this PR
- The PR description mentions specific repairs to the banned tools table (e.g., '| ReScript | AffineScript |') and Rule 1 text that are not reflected in the provided changes. Please verify if all intended modifications from the 'Also repaired' section of your description have been included in the commit.
Test suggestions
- Verify AI agent identifies Bun as the default and preferred Tier 1 runtime for JS/TS.
- Verify AI agent follows the requirement to create and maintain package.json and bun.lock.
- Verify consistency of the 'AffineScript' rename across all policy tables and rules.
Prompt proposal for missing tests
Consider implementing these tests if applicable:
1. Verify AI agent identifies Bun as the default and preferred Tier 1 runtime for JS/TS.
2. Verify AI agent follows the requirement to create and maintain package.json and bun.lock.
3. Verify consistency of the 'AffineScript' rename across all policy tables and rules.
TIP Improve review quality by adding custom instructions
TIP How was this review? Give us feedback
| | **Gleam** | Backend services | Runs on BEAM or compiles to JS | | ||
| | **Bash/POSIX Shell** | Scripts, automation | Keep minimal | | ||
| | **JavaScript** | Only where ReScript cannot | MCP protocol glue, Deno APIs | | ||
| | **JavaScript** | Only where AffineScript cannot | MCP protocol glue, Bun APIs | |
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🟡 MEDIUM RISK
The documentation now uses 'AffineScript' and 'ReScript' interchangeably. To ensure the AI assistant follows a single consistent language policy, replace all remaining instances of 'ReScript' with 'AffineScript', particularly in the allowed languages table (line 22), the banned list (lines 40, 45), and Rule 5 (line 66).
| 1. **No new TypeScript files** - Convert existing TS to ReScript | ||
| 2. **No package.json for runtime deps** - Use deno.json imports | ||
| 3. **No node_modules in production** - Deno caches deps automatically | ||
| 1. **No new TypeScript files** - Convert existing TS to AffineScript |
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⚪ LOW RISK
The implementation of this rule diverges from the PR description's specific 'repaired' example: 'No new ReScript files — convert .res to AffineScript (.affine)'. The current code keeps 'No new TypeScript files', which contradicts the stated goal of repairing the language purge.
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 cannotReview 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).