one
Version:
One is a new React Framework that makes Vite serve both native and web.
33 lines (32 loc) • 1.48 kB
JavaScript
import { useStateForPath } from "@react-navigation/core";
import { createContext, useRef } from "react";
import { getRouteInfo } from "./getRouteInfo";
import { jsx } from "react/jsx-runtime";
const RouteInfoContext = createContext(void 0);
function RouteInfoContextProvider({ children }) {
const currentState = useStateForPath(), currentStateRef = useRef(void 0), lastStateRef = useRef(void 0), cachedRouteInfoValueRef = useRef(void 0), lazilyCalculatedRouteInfo = useRef(void 0);
return currentState && currentStateRef.current !== currentState && (lazilyCalculatedRouteInfo.current = makeLazilyCalculatedRouteInfo({
currentStateRef,
lastStateRef,
cachedRouteInfoValueRef
})), currentStateRef.current = currentState, /* @__PURE__ */ jsx(RouteInfoContext.Provider, { value: currentState ? lazilyCalculatedRouteInfo.current : void 0, children });
}
function makeLazilyCalculatedRouteInfo({
currentStateRef,
lastStateRef,
cachedRouteInfoValueRef
}) {
return new Proxy({}, {
get(_, p) {
const state = currentStateRef.current;
if (!state)
throw new Error("[lazilyCalculatedRouteInfo] cannot get state");
return (!cachedRouteInfoValueRef.current || lastStateRef.current !== state) && (cachedRouteInfoValueRef.current = getRouteInfo(state), lastStateRef.current = state), cachedRouteInfoValueRef.current[p];
}
});
}
export {
RouteInfoContext,
RouteInfoContextProvider
};
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