ump-core

Platform-agnostic runtime for UMP. The react peer in UMP's react + react-native split:

• JSX runtime: createElement, Fragment, jsx / jsxs.
• Hooks: useState, useEffect, useRef, useMemo, useCallback, useReducer, useLayoutEffect, useImperativeHandle, useId, createContext / useContext.
• forwardRef, memo, ErrorBoundary / useErrorBoundary, render, createPortal.
• Module / refresh registry used by Fast Refresh.

ump-core does not ship native components or browser-globals polyfills. Pair it with ump-native (or ump-h5-native for the browser).

Install

npm install ump-core ump-native

Usage

UMP uses the automatic JSX runtime (jsx: "react-jsx" + jsxImportSource: "ump-core"), so <View> and <></> work without per-file createElement / Fragment imports.

import { useState } from 'ump-core';
import { View, Text, Pressable } from 'ump-native';

export default function Counter() {
    const [n, setN] = useState(0);
    return (
        <View>
            <Text>Count: {n}</Text>
            <Pressable onPress={() => setN(n + 1)}>
                <Text>+1</Text>
            </Pressable>
        </View>
    );
}

See the main README for the full component matrix and platform support.

License

MIT — see LICENSE.