next
Version:
The React Framework
109 lines (108 loc) • 4.75 kB
JavaScript
import { workAsyncStorage } from '../app-render/work-async-storage.external';
import { postponeWithTracking } from '../app-render/dynamic-rendering';
import { throwInvariantForMissingStore, workUnitAsyncStorage } from '../app-render/work-unit-async-storage.external';
import { delayUntilRuntimeStage, makeHangingPromise } from '../dynamic-rendering-utils';
import { InvariantError } from '../../shared/lib/invariant-error';
export function createServerPathnameForMetadata(underlyingPathname) {
const workStore = workAsyncStorage.getStore();
if (!workStore) {
throw Object.defineProperty(new InvariantError('Expected workStore to be initialized'), "__NEXT_ERROR_CODE", {
value: "E1068",
enumerable: false,
configurable: true
});
}
const workUnitStore = workUnitAsyncStorage.getStore();
if (workUnitStore) {
switch(workUnitStore.type){
case 'prerender':
case 'prerender-ppr':
case 'prerender-legacy':
{
return createPrerenderPathname(underlyingPathname, workStore, workUnitStore);
}
case 'prerender-client':
case 'validation-client':
throw Object.defineProperty(new InvariantError('createServerPathnameForMetadata should not be called in client contexts.'), "__NEXT_ERROR_CODE", {
value: "E1065",
enumerable: false,
configurable: true
});
case 'cache':
case 'private-cache':
case 'unstable-cache':
throw Object.defineProperty(new InvariantError('createServerPathnameForMetadata should not be called in cache contexts.'), "__NEXT_ERROR_CODE", {
value: "E740",
enumerable: false,
configurable: true
});
case 'generate-static-params':
throw Object.defineProperty(new InvariantError('createServerPathnameForMetadata should not be called inside generateStaticParams.'), "__NEXT_ERROR_CODE", {
value: "E1129",
enumerable: false,
configurable: true
});
case 'prerender-runtime':
return delayUntilRuntimeStage(workUnitStore, createRenderPathname(underlyingPathname));
case 'request':
return createRenderPathname(underlyingPathname);
default:
workUnitStore;
}
}
throwInvariantForMissingStore();
}
function createPrerenderPathname(underlyingPathname, workStore, prerenderStore) {
switch(prerenderStore.type){
case 'prerender':
{
const fallbackParams = prerenderStore.fallbackRouteParams;
if (fallbackParams && fallbackParams.size > 0) {
return makeHangingPromise(prerenderStore.renderSignal, workStore.route, '`pathname`');
}
break;
}
case 'prerender-ppr':
{
const fallbackParams = prerenderStore.fallbackRouteParams;
if (fallbackParams && fallbackParams.size > 0) {
return makeErroringPathname(workStore, prerenderStore.dynamicTracking);
}
break;
}
case 'prerender-legacy':
break;
default:
prerenderStore;
}
// We don't have any fallback params so we have an entirely static safe params object
return Promise.resolve(underlyingPathname);
}
function makeErroringPathname(workStore, dynamicTracking) {
let reject = null;
const promise = new Promise((_, re)=>{
reject = re;
});
const originalThen = promise.then.bind(promise);
// We instrument .then so that we can generate a tracking event only if you actually
// await this promise, not just that it is created.
promise.then = (onfulfilled, onrejected)=>{
if (reject) {
try {
postponeWithTracking(workStore.route, 'metadata relative url resolving', dynamicTracking);
} catch (error) {
reject(error);
reject = null;
}
}
return originalThen(onfulfilled, onrejected);
};
// We wrap in a noop proxy to trick the runtime into thinking it
// isn't a native promise (it's not really). This is so that awaiting
// the promise will call the `then` property triggering the lazy postpone
return new Proxy(promise, {});
}
function createRenderPathname(underlyingPathname) {
return Promise.resolve(underlyingPathname);
}
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