{"library":"react-is","type":"library","category":null,"description":"react-is is a low-level utility package provided by the React team for performing \"brand checking\" on React elements and types. This library exports a set of predicate functions (e.g., `isElement`, `isValidElementType`, `isFragment`, `isMemo`) that allow developers, particularly library authors, to programmatically determine the specific type or \"brand\" of a React node without relying on potentially unstable internal properties. The current stable version is 19.2.5, aligning with the major version of React itself, indicating a close release cadence tied to the main React project. Its primary differentiation is providing a stable, official API for introspecting React elements, which is crucial for tools, renderers, and component libraries that need to handle various React node types robustly, unlike direct checks on `$$typeof` which are considered internal and unstable. It does not provide UI components but rather helper functions for type introspection.","language":"javascript","status":"active","version":"19.2.5","tags":["javascript","react"],"install":[{"cmd":"npm install react-is","imports":["import { isValidElementType } from 'react-is'","import { isElement } from 'react-is'","import { isFragment } from 'react-is'","import { isMemo } from 'react-is'"]},{"cmd":"yarn add react-is","imports":[]},{"cmd":"pnpm add react-is","imports":[]}],"homepage":"https://react.dev/","github":"https://github.com/facebook/react","docs":null,"changelog":null,"pypi":null,"npm":"https://www.npmjs.com/package/react-is","openapi_spec":null,"status_page":null,"smithery":null,"compatibility":{"summary":{"python_range":"18–22","success_rate":0,"avg_install_s":null,"avg_import_s":null,"wheel_type":null},"url":"https://checklist.day/v1/registry/react-is/compatibility"},"provenance":{"verified_status":null,"verified_at":null,"last_verified":"Wed Jun 17","next_check":"Sat Jul 18","install_tag":null}}