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JavaScript runtime performance patterns v1.0.0

Use this resource to optimize critical JavaScript loops and data processing for speed

New

  • 307 downloads
  • 228 likes
  • 216 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install javascript-runtime-performance

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent reviews the hot paths of your code, such as loops and scroll handlers, and applies patterns: Set and Map, batched reads, memoization. You get the changes and the points to measure before and after.

Mostly picked by

Updated November 2, 2026

Card for the “JavaScript runtime performance patterns” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: six numbered patterns with examples
  • SKILL.md: use cases, measurement and context of use

Good fit for

  • A process over a thousand items freezes the interface
  • A scroll handler takes too long on every frame

Not for

    Tags

    • javascript
    • performance
    • loops
    • memoization

    About

    You say

    “Optimize the function that filters my 20,000 rows of data on every keystroke.”

    Card for the “JavaScript runtime performance patterns” skill

    Skill published by patternsdev under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to optimize critical JavaScript loops and data processing for speed
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.3 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md11.3 KB

    Origin and licence

    Listed unmodified

    Author
    patternsdev
    Source
    github.com/patternsdev/skills/tree/48bf58a488cd210bcfad280b09c3a00403964d9d/javascript/js-performance-patterns
    Licence
    MIT

    Notice

    « js-performance-patterns » (patternsdev, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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