SKILL verified MIT Self-run

Flutter Performance

Name: Flutter Performance
Availability: InStock
Author: ngxtm

skill-ngxtm-devkit-performance · by ngxtm

Optimization standards for rebuilds and memory.

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Install

$ agentstack add skill-ngxtm-devkit-performance

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

✓ Prompt-injection patterns
✓ Secret / credential exfiltration
✓ Dangerous shell & filesystem operations
✓ Untrusted network calls
✓ Known-malicious package signatures

What it can access

✓ Network access No
✓ Filesystem access No
✓ Shell / process execution No
✓ Environment & secrets No
✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

Performance (P1)

Rebuilds: Use const widgets and buildWhen / select for granular updates.
Lists: Always use ListView.builder for item recycling.
Heavy Tasks: Use compute() or Isolates for parsing/logic.
Repaints: Use RepaintBoundary for complex animations. Use debugRepaintRainbowEnabled to debug.
Images: Use CachedNetworkImage + memCacheWidth. precachePicture for SVGs.

BlocBuilder(
  buildWhen: (p, c) => p.id != c.id,
  builder: (context, state) => Text(state.name),
)

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Author: ngxtm
Source: ngxtm/devkit
License: MIT

Install and usage instructions live in the source repository linked above.

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Versions

v0.1.0 Imported from the upstream source.