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avoiding-subcomposition-pitfalls

100 / 100 · Low risk

Fine to try.

By skydoves/compose-performance-skills (GitHub) · coding · 530 stars · scanned at commit 1b32f81

Use this skill when a Compose tree uses SubcomposeLayout, BoxWithConstraints, or Scaffold and the developer reports extra measure passes, slow first frame, or layout passes running content composition repeatedly. Covers why SubcomposeLayout composes its slots during the measure phase, why BoxWithConstraints forces a subcomposition for every new Constraints value, why nesting Scaffold or BoxWithConstraints multiplies the cost, when a custom Layout or Modifier.layout { } replaces SubcomposeLayout…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'avoiding-subcomposition-pitfalls' ] || [ -L ~/.agents/skills/'avoiding-subcomposition-pitfalls' ]; then echo 'A skill folder named avoiding-subcomposition-pitfalls already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/skydoves/compose-performance-skills' "$d" && git -C "$d" checkout --quiet '1b32f81724c0d71fe9ef093ca44697f559fdab6e' -- 'recomposition/avoiding-subcomposition-pitfalls' && mkdir -p ~/.agents/skills && cp -R "$d"/'recomposition/avoiding-subcomposition-pitfalls' ~/.agents/skills/'avoiding-subcomposition-pitfalls' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'avoiding-subcomposition-pitfalls' ~/.claude/skills/'avoiding-subcomposition-pitfalls' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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