相关职业SOC
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基于 SOC 职业分类
| name | simplify-code |
| description | The best code is the code you don't have to write. The second best is the code anyone can read. |
The best code is the code you don't have to write. The second best is the code anyone can read.
Complexity is a cost. Every abstraction, every indirection, every clever pattern
adds cognitive load. Simplify ruthlessly unless complexity serves a clear purpose.
| Smell | Simplification |
|---|---|
| Wrapper class that just delegates | Remove wrapper, use the inner class directly |
| Factory that creates only one type | Replace with direct constructor |
| Strategy pattern with one strategy | Replace with simple function |
| Interface with one implementation | Remove interface, use the class |
| Abstract class with one child | Merge into the child class |
| Config object for 2 values | Use function parameters |
| Smell | Action |
|---|---|
| Unused imports | Remove |
| Unreachable branches | Remove (check tests first) |
| Commented-out code | Remove (it's in git history) |
| Unused variables/functions | Remove |
| TODO comments older than 6 months | Remove or create issue |
| Feature flags for launched features |
| Remove flag, keep the code |
// ❌ Before: 4 levels deep
function process(data) {
if (data) {
if (data.items) {
for (const item of data.items) {
if (item.active) {
doSomething(item)
}
}
}
}
}
// ✅ After: Early returns + filter
function process(data) {
if (!data?.items) return
data.items
.filter(item => item.active)
.forEach(doSomething)
}
// ❌ Before: 8 parameters
function createUser(name, email, age, role, dept, active, verified, avatar) { }
// ✅ After: Object parameter
function createUser(opts: CreateUserOpts) { }
| Smell | Simplification |
|---|---|
| Custom cache for <100 items | Remove cache, measure first |
| Memoization on cheap functions | Remove memo |
| Lazy loading for small modules | Use direct import |
| Complex state machine for 3 states | Use simple if/else or switch |
- Count nesting levels (target: ≤3)
- Count function parameters (target: ≤4)
- Count lines per function (target: ≤30)
- Count abstractions per feature (target: ≤2)
- Check for dead code (target: 0)
Before simplifying, ensure you understand:
1. Remove dead code first (safest)
2. Flatten nesting with early returns
3. Inline trivial abstractions
4. Merge related functions
5. Simplify data structures
npm run test # All existing tests still pass
npm run build # Still compiles
| Situation | Why Keep Complexity |
|---|---|
| Performance-critical hot path | Optimization may look complex but is necessary |
| Required by framework/library | External constraints |
| Explicitly requested pattern | User chose this architecture |
| Will need extension soon | Abstraction prepares for known growth |
Ask first: "This pattern seems over-engineered. Should I simplify it, or is there a reason for the abstraction?"
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