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JavaScript optimization for hot paths (V8) v1.0.0

Use this resource to write or review hot code tuned for the V8 engine

New

  • 598 downloads
  • 217 likes
  • 203 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install v8-hot-path-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 code run on each request and applies V8 rules: constructor-initialized properties, monomorphic calls, closures outside loops and packed arrays. You get faster code, checkable with V8 trace options.

Mostly picked by

Updated November 2, 2026

Card for the “JavaScript optimization for hot paths (V8)” skill

Details

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

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What you get

  • SKILL.md: V8 tiers, object shapes and monomorphic calls
  • SKILL.md: allocations, arrays and profiling with --trace-opt and --trace-deopt

Good fit for

  • You change rendering or streaming in Next.js
  • A profile shows deoptimizations on a per-request path

Not for

    Tags

    • v8
    • performance
    • javascript

    About

    You say

    “Review this cache function called on every request and reduce its allocations.”

    Card for the “JavaScript optimization for hot paths (V8)” skill

    Skill published by vercel 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 write or review hot code tuned for the V8 engine
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.4 KB
    • SKILL.md14.2 KB

    Origin and licence

    Listed unmodified

    Author
    vercel
    Source
    github.com/vercel/next.js/tree/08442e3a63091caad4fac56eef88303e0c257a0d/.agents/skills/v8-jit
    Licence
    MIT

    Notice

    « v8-jit » (vercel, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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