Accessible React 19 bottom sheets with a compound Sheet API, named snap points, and separately exported styles.
Production-grade primitives and tools for the web.
NIPE Open Source maintains focused libraries and migration tools in public, with documentation and source kept close to each project.
Explore the projectsProjects
Released packages and their canonical technical references, grouped by the problem they address.
UI & Interaction
Runtime
Readonly View
StableA deeply readonly, lazy, live view of owner-controlled mutable data for JavaScript and TypeScript.
Tooling
Angular Flex-Layout Codemod
PrereleaseA beta Angular template codemod for Flex-Layout to Tailwind CSS v4 migrations.
Engineering principles
These are working constraints reflected in the projects above, not claims that every library solves every case.
Evidence before claims
Capabilities and limits in this directory follow released documentation, package metadata, and current source.
Accessibility is behavior
Interface components document focus, keyboard, motion, and background behavior alongside their visual states.
Automation leaves a review path
Migration tooling reports exact edits and preserves unresolved cases for human review instead of approximating them silently.