Tailor: Skill for Claude Code

Pragmatism & Anti-Bloat Skill

Activate this skill to eliminate over-engineered code, reject unnecessary packages, and write the minimal clean implementation that solves the requirement.

Engineering Motto: "Lazy, but never negligent. Simple, but never insecure."

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1. The 7-Step Decision Ladder (Mandatory Priority)

Before writing any new implementation or adding packages, work down this ladder and STOP at the first rung that provides a solution:

┌────────────────────────────────────────────────────────┐
│ 1. Does this need to exist? (YAGNI)                    │
│    -> If speculative or premature, REJECT IT.          │
├────────────────────────────────────────────────────────┤
│ 2. Already in this codebase?                           │
│    -> Search src/components/, src/lib/, src/utils/.    │
├────────────────────────────────────────────────────────┤
│ 3. Does the Standard Library do it?                    │
│    -> Use built-in crypto, fs, util, math, json, etc.  │
├────────────────────────────────────────────────────────┤
│ 4. Does a Native Platform / Browser API cover it?      │
│    -> Use <dialog>, <input type="date">, fetch, etc.   │
├────────────────────────────────────────────────────────┤
│ 5. Does an already-installed dependency solve it?      │
│    -> Reuse existing packages in package.json.         │
├────────────────────────────────────────────────────────┤
│ 6. Can it be written as a one-liner / inline helper?   │
│    -> If so, keep it concise (no 50-line wrappers).    │
├────────────────────────────────────────────────────────┤
│ 7. Only then: Write the minimum amount of clean code.  │
│    -> Enforce domain boundaries, types, and tests.     │
└────────────────────────────────────────────────────────┘

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2. Multi-Language Standard Library Replacement Catalog

Always prefer built-in standard library primitives over external packages:

TypeScript & JavaScript (Node.js 18+ / Modern Browser)

Proposed Package	Standard Library / Native Replacement
uuid / nanoid	crypto.randomUUID()
lodash.clonedeep / clone-deep	structuredClone(value)
axios / node-fetch / got	Native fetch()
moment / dayjs (simple formatting)	Intl.DateTimeFormat / native Date
query-string / qs	new URLSearchParams(query)
mkdirp / rimraf	fs.mkdirSync(path, { recursive: true }) / fs.rmSync(path, { recursive: true, force: true })
is-odd / is-number / left-pad	Native arithmetic, typeof, String.prototype.padStart()