ECO-CMP-JS-011 — Inefficient array transformations (multi-pass)¶

Category: Computation (CMP)
Family: JavaScript (JS)
Layer: Code
Tier: 1
Severity: note
Tags: javascript, cpu
Legacy ID: ECO-JS-011

Summary¶

Multiple passes over arrays increases CPU and GC overhead.

Map/filter/reduce chains can be fine, but in hot paths they add overhead.

{
  "confidence": 0.55,
  "notes": "Context-dependent.",
  "type": "cpu"
}

{
  "languages": [
    "javascript"
  ],
  "method": "ast"
}

{
  "guidance": "Combine passes in hot paths; keep readability elsewhere.",
  "tradeoffs": "Potential readability loss."
}

{
  "system_layers": [
    "code"
  ]
}