CRUX-Compress / example

---
generated: 2026-01-28 10:45
sourceChecksum: 264908382
beforeTokens: 3234
afterTokens: 875
reducedBy: 73%
confidence: 95%
alwaysApply: false
crux: true
description: Team coding standards and best practices
---

> [!IMPORTANT]
> Generated file - do not edit!

# Team Coding Standards and Best Practices

```crux
⟦CRUX:coding-standards-demo.md
Ρ{team coding standards+best practices}
Κ{
  fn=function; cls=class; var=variable;
  JS=JavaScript; TS=TypeScript; Py=Python
}

R.philosophy{
  readable≻clever; code→humans first;
  ∀code→read many×>write 1×
}

R.boyscout{
  leave code≥found; touch file→cleanup minor;
  ¬scope-creep; big refactor→separate ticket
}

R.naming{
  vars+fns=descriptive+self-doc; ¬single-letter[except short loops];
  JS/TS{var+fn=camelCase; cls=PascalCase; const=SCREAMING_SNAKE};
  Py{var+fn=snake_case; cls=PascalCase};
  bool→prefix[is|has|can|should];
  files{JS/TS=kebab-case; Py=snake_case};
  dir=lowercase+hyphens; 1file→1responsibility
}

R.structure{
  fn.len≤20..30ln; 1fn→1thing;
  nesting≤3levels→use early return|extract fn;
  comments→"why"¬"what"
}

R.docs{
  ∀public[API|cls|fn]→doc comments;
  include=[desc,params+types,return,examples?,exceptions?]
}

R.errors{
  ¬swallow!→log|handle|rethrow;
  custom err types→precise handling+debug;
  err.msg∋[op failed,expected,actual,IDs,ctx]
}

R.test{
  ∀new code→tests; cov≥80%⊕meaningful;
  name="should [behavior] when [condition]";
  pattern=AAA[Arrange→Act→Assert];
  mock=[external APIs,DB,filesystem,time]; ¬mock=[unit tested,utils,data structs]
}

R.git{
  commit=conventional{type(scope):desc};
  types=[feat,fix,docs,style,refactor,test,chore];
  branch=[feature/,fix/,refactor/,docs/]+desc; +ticket#?;
  PR{title clear,desc what+why,ref issues,small+complete,tests,CI pass}
}

R.security{
  ¬commit[API keys,secrets,passwords,creds,private keys,PII]!;
  use env vars+secret mgmt;
  ∀input→validate[type,format,range]+sanitize;
  DB→parameterized queries; output→encode[XSS];
  auth→check before op; use established libs; rate limit; secure sessions
}

R.perf{
  DB{¬N+1→eager load; +indexes; paginate; profile slow};
  cache{expensive ops+external API; TTL→volatility; invalidation; warming};
  frontend{lazy load; optimize images; min bundle; code split}
}

R.deps{
  before add→check[maintained?,bundle size?,vulns?,existing alt?];
  doc major deps in README;
  prod→pin exact ver; libs→ver ranges;
  update regularly; monitor vulns
}

R.review{
  author{self-review first; PR small+focused; ctx in desc; feedback→constructive};
  reviewer{respectful; explain reasoning; required≠suggestions; approve when good enough}
}

R.logging{
  log=[startup,shutdown,auth events,biz-critical ops,errors+ctx,perf metrics];
  ¬log=[sensitive data,high-freq spam,redundant];
  levels{ERROR=failed+attention; WARN=unexpected+recoverable;
    INFO=normal biz; DEBUG=detailed; TRACE=very detailed}
}

Ω{
  standards=living doc→update as team grows;
  goal=better code together¬bureaucracy;
  ?doubt→ask colleague
}
⟧
```