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server.mjs
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Wed, Feb 5, 22:49

server.mjs

import * as React from 'react';
import { Action, invariant, isRouteErrorResponse, UNSAFE_convertRoutesToDataRoutes, IDLE_NAVIGATION, IDLE_FETCHER } from '@remix-run/router';
import { parsePath, Router, UNSAFE_DataStaticRouterContext, UNSAFE_DataRouterContext, UNSAFE_DataRouterStateContext, Routes, UNSAFE_enhanceManualRouteObjects, createPath } from 'react-router-dom';
/**
* A <Router> that may not navigate to any other location. This is useful
* on the server where there is no stateful UI.
*/
function StaticRouter({
basename,
children,
location: locationProp = "/"
}) {
if (typeof locationProp === "string") {
locationProp = parsePath(locationProp);
}
let action = Action.Pop;
let location = {
pathname: locationProp.pathname || "/",
search: locationProp.search || "",
hash: locationProp.hash || "",
state: locationProp.state || null,
key: locationProp.key || "default"
};
let staticNavigator = getStatelessNavigator();
return /*#__PURE__*/React.createElement(Router, {
basename: basename,
children: children,
location: location,
navigationType: action,
navigator: staticNavigator,
static: true
});
}
/**
* A Data Router that may not navigate to any other location. This is useful
* on the server where there is no stateful UI.
*/
function StaticRouterProvider({
context,
router,
hydrate = true,
nonce
}) {
!(router && context) ? process.env.NODE_ENV !== "production" ? invariant(false, "You must provide `router` and `context` to <StaticRouterProvider>") : invariant(false) : void 0;
let dataRouterContext = {
router,
navigator: getStatelessNavigator(),
static: true,
basename: context.basename || "/"
};
let hydrateScript = "";
if (hydrate !== false) {
let data = {
loaderData: context.loaderData,
actionData: context.actionData,
errors: serializeErrors(context.errors)
}; // Use JSON.parse here instead of embedding a raw JS object here to speed
// up parsing on the client. Dual-stringify is needed to ensure all quotes
// are properly escaped in the resulting string. See:
// https://v8.dev/blog/cost-of-javascript-2019#json
let json = JSON.stringify(JSON.stringify(data));
hydrateScript = `window.__staticRouterHydrationData = JSON.parse(${json});`;
}
return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement(UNSAFE_DataStaticRouterContext.Provider, {
value: context
}, /*#__PURE__*/React.createElement(UNSAFE_DataRouterContext.Provider, {
value: dataRouterContext
}, /*#__PURE__*/React.createElement(UNSAFE_DataRouterStateContext.Provider, {
value: dataRouterContext.router.state
}, /*#__PURE__*/React.createElement(Router, {
basename: dataRouterContext.basename,
location: dataRouterContext.router.state.location,
navigationType: dataRouterContext.router.state.historyAction,
navigator: dataRouterContext.navigator
}, /*#__PURE__*/React.createElement(Routes, null))))), hydrateScript ? /*#__PURE__*/React.createElement("script", {
suppressHydrationWarning: true,
nonce: nonce,
dangerouslySetInnerHTML: {
__html: hydrateScript
}
}) : null);
}
function serializeErrors(errors) {
if (!errors) return null;
let entries = Object.entries(errors);
let serialized = {};
for (let [key, val] of entries) {
// Hey you! If you change this, please change the corresponding logic in
// deserializeErrors in react-router-dom/index.tsx :)
if (isRouteErrorResponse(val)) {
serialized[key] = { ...val,
__type: "RouteErrorResponse"
};
} else if (val instanceof Error) {
// Do not serialize stack traces from SSR for security reasons
serialized[key] = {
message: val.message,
__type: "Error"
};
} else {
serialized[key] = val;
}
}
return serialized;
}
function getStatelessNavigator() {
return {
createHref,
encodeLocation,
push(to) {
throw new Error(`You cannot use navigator.push() on the server because it is a stateless ` + `environment. This error was probably triggered when you did a ` + `\`navigate(${JSON.stringify(to)})\` somewhere in your app.`);
},
replace(to) {
throw new Error(`You cannot use navigator.replace() on the server because it is a stateless ` + `environment. This error was probably triggered when you did a ` + `\`navigate(${JSON.stringify(to)}, { replace: true })\` somewhere ` + `in your app.`);
},
go(delta) {
throw new Error(`You cannot use navigator.go() on the server because it is a stateless ` + `environment. This error was probably triggered when you did a ` + `\`navigate(${delta})\` somewhere in your app.`);
},
back() {
throw new Error(`You cannot use navigator.back() on the server because it is a stateless ` + `environment.`);
},
forward() {
throw new Error(`You cannot use navigator.forward() on the server because it is a stateless ` + `environment.`);
}
};
} // Temporary manifest generation - we should optimize this by combining the
// tree-walks between convertRoutesToDataRoutes, enhanceManualRouteObjects,
// and generateManifest.
// Also look into getting rid of `route as AgnosticDataRouteObject` down below?
function generateManifest(routes, manifest = new Map()) {
routes.forEach(route => {
manifest.set(route.id, route);
if (route.children) {
generateManifest(route.children, manifest);
}
});
return manifest;
}
function createStaticRouter(routes, context) {
let dataRoutes = UNSAFE_convertRoutesToDataRoutes(UNSAFE_enhanceManualRouteObjects(routes));
let manifest = generateManifest(dataRoutes); // Because our context matches may be from a framework-agnostic set of
// routes passed to createStaticHandler(), we update them here with our
// newly created/enhanced data routes
let matches = context.matches.map(match => {
let route = manifest.get(match.route.id) || match.route;
return { ...match,
route: route
};
});
let msg = method => `You cannot use router.${method}() on the server because it is a stateless environment`;
return {
get basename() {
return context.basename;
},
get state() {
return {
historyAction: Action.Pop,
location: context.location,
matches,
loaderData: context.loaderData,
actionData: context.actionData,
errors: context.errors,
initialized: true,
navigation: IDLE_NAVIGATION,
restoreScrollPosition: null,
preventScrollReset: false,
revalidation: "idle",
fetchers: new Map()
};
},
get routes() {
return dataRoutes;
},
initialize() {
throw msg("initialize");
},
subscribe() {
throw msg("subscribe");
},
enableScrollRestoration() {
throw msg("enableScrollRestoration");
},
navigate() {
throw msg("navigate");
},
fetch() {
throw msg("fetch");
},
revalidate() {
throw msg("revalidate");
},
createHref,
encodeLocation,
getFetcher() {
return IDLE_FETCHER;
},
deleteFetcher() {
throw msg("deleteFetcher");
},
dispose() {
throw msg("dispose");
},
_internalFetchControllers: new Map(),
_internalActiveDeferreds: new Map()
};
}
function createHref(to) {
return typeof to === "string" ? to : createPath(to);
}
function encodeLocation(to) {
// Locations should already be encoded on the server, so just return as-is
let path = typeof to === "string" ? parsePath(to) : to;
return {
pathname: path.pathname || "",
search: path.search || "",
hash: path.hash || ""
};
}
export { StaticRouter, StaticRouterProvider, createStaticRouter };

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