feat(deno): migrate mvt/ Bun → Deno (Class A, standards#253 longtail)#53
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Class A — pure-Deno port. Three changes:
1. Add `mvt/deno.json` with deno-native tasks (test/serve/dev). Tests
use `node:test` (which Deno supports natively); serve uses
`Deno.serve` + `Deno.readFile`.
2. Port `mvt/src/server.js`:
- `Bun.env.PORT` → `Deno.env.get("PORT")`
- `Bun.serve({port, fetch})` → `Deno.serve({port}, fetch)` (Deno API)
- `Bun.file(url).exists() + new Response(file)` → `await Deno.readFile(url)` with `Deno.errors.NotFound` catch (Deno's idiomatic file-serve pattern)
3. Delete `mvt/package.json` (was Bun-only; no deps, only `test` +
`serve` scripts).
Tests use `node:test` + `node:assert/strict`, both of which Deno
supports natively without flags. The path-traversal guard
(`fileUrl.pathname.startsWith(root.pathname)`) is preserved.
Per per-repo follow-up tracker for standards#253 (campaign closed
2026-05-31, longtail tracked in project_estate_npm_to_deno_2026_05_28.md).
Refs hyperpolymath/standards#253.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
hyperpolymath
enabled auto-merge (squash)
May 31, 2026 07:23
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Summary
Class A — pure-Deno port. The only Bun-specific code was
mvt/src/server.js(35 lines,Bun.serve+Bun.file+Bun.env) plus themvt/package.jsonBun-runner scripts.Changes
mvt/deno.json(new) — Deno-native tasks fortest/test:watch/serve/dev+ fmt/lint config.mvt/src/server.js— Bun → Deno API port:Bun.env.PORT→Deno.env.get("PORT")Bun.serve({port, fetch})→Deno.serve({port}, fetch)Bun.file(url).exists() + new Response(file)→await Deno.readFile(url)withDeno.errors.NotFoundcatch (idiomatic Deno file-serve)mvt/package.json(deleted) — was Bun-only, no deps; justbun test+bun src/server.jsscripts.Tests use
node:test+node:assert/strict, both supported by Deno natively without flags — no test-file changes needed.The path-traversal guard (
fileUrl.pathname.startsWith(root.pathname)) is preserved unchanged.Test plan
deno task testruns the public-goods kernel test suite (usesnode:testwhich Deno supports natively)deno task servestarts the static server on port 5173 (default) or$PORTcurl http://localhost:5173/returns the UI index.htmlcurl http://localhost:5173/../etc/passwdreturns 403 (path-traversal guard intact)Per per-repo follow-up tracker for standards#253 (campaign closed 2026-05-31, longtail tracked in
project_estate_npm_to_deno_2026_05_28.md).Refs hyperpolymath/standards#253.
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