dashcaddy/DUP-CODE.md

DashCaddy Duplicate Code Report

Generated: 2026-07-13
Functions scanned: 107 (≥200 chars body length)
Exact-duplicate groups: 10

Methodology

1. Extract every top-level function X() { ... } declaration
2. Skip functions < 200 chars (helpers, getters, trivial wrappers)
3. Normalize: strip comments, collapse whitespace, replace all identifiers with placeholder
4. SHA-1 the normalized body → identical hashes = duplicate bodies

⚠️ Caveats

• Anonymous functions and arrow functions are not captured (regex matches function name( only)
• Class methods are not captured (would need AST parser)
• Near-duplicates with renamed variables are flagged as the same (that's the point — after normalization, only structure differs)
• module.exports factory functions are common and look similar — many route files have a 5-line wrapper like module.exports = function(ctx) { const router = express.Router(); ... return router; }. These will show as duplicate groups.

Exact Duplicate Groups

Functions whose bodies are byte-identical after normalization (ignoring comments, whitespace, and identifier names).

Hash	Count	Functions
5a3372b656b7	2	base32Encode, base32Encode
9550727efdf2	2	base32Decode, base32Decode
e00959ade524	2	getSecret, getSecret
09498fd55b60	2	initSecret, initSecret
0f89a717e703	2	generateCode, generateCode
d92f81854134	2	parseCode, parseCode
8c3ecfea7f7d	2	parsePayload, parsePayload
fc844dbaca2f	2	verifyCode, verifyCode
221e46c497d9	2	main, main
9573dd3cd485	2	formatBytes, formatBytes

Top Groups (Detail)

Hash 5a3372b656b7 (2 copies)

• src/managers/license-keygen.js:33 — base32Encode() (374 chars)
• license-keygen.js:33 — base32Encode() (374 chars)

Hash 9550727efdf2 (2 copies)

• src/managers/license-keygen.js:48 — base32Decode() (415 chars)
• license-keygen.js:48 — base32Decode() (415 chars)

Hash e00959ade524 (2 copies)

• src/managers/license-keygen.js:62 — getSecret() (216 chars)
• license-keygen.js:62 — getSecret() (216 chars)

Hash 09498fd55b60 (2 copies)

• src/managers/license-keygen.js:70 — initSecret() (597 chars)
• license-keygen.js:70 — initSecret() (597 chars)

Hash 0f89a717e703 (2 copies)

• src/managers/license-keygen.js:83 — generateCode() (1331 chars)
• license-keygen.js:83 — generateCode() (1331 chars)

Hash d92f81854134 (2 copies)

• src/managers/license-keygen.js:118 — parseCode() (523 chars)
• license-keygen.js:118 — parseCode() (523 chars)

Hash 8c3ecfea7f7d (2 copies)

• src/managers/license-keygen.js:135 — parsePayload() (443 chars)
• license-keygen.js:135 — parsePayload() (443 chars)

Hash fc844dbaca2f (2 copies)

• src/managers/license-keygen.js:148 — verifyCode() (1367 chars)
• license-keygen.js:148 — verifyCode() (1367 chars)

Hash 221e46c497d9 (2 copies)

• src/managers/license-keygen.js:188 — main() (4428 chars)
• license-keygen.js:188 — main() (4428 chars)

Hash 9573dd3cd485 (2 copies)

• routes/backups.js:693 — formatBytes() (259 chars)
• routes/apps/restore.js:488 — formatBytes() (259 chars)

Common Factory Pattern

module.exports = function(ctx) { const router = express.Router(); ... }

49 files use this factory wrapper pattern:

• routes/errorlogs.js
• routes/docker-resources.js
• routes/ca.js
• routes/config-drift.js
• routes/containers.js
• routes/context.js
• routes/monitoring.js
• routes/workflows.js
• routes/services.js
• routes/sites.js
• routes/logs.js
• routes/credentials.js
• routes/themes.js
• routes/updates.js
• routes/dns.js
• ... and 34 more

Could be extracted to a helper:

// src/utilities/route-factory.js
module.exports = function routeFactory(handlerFn) {
  return function(deps) {
    const router = require('express').Router();
    handlerFn(router, deps);
    return router;
  };
};