next/dist/esm/server/request/pathname.js

The React Framework

import { delayUntilRuntimeStage, postponeWithTracking } from '../app-render/dynamic-rendering';
import { throwInvariantForMissingStore, workUnitAsyncStorage } from '../app-render/work-unit-async-storage.external';
import { makeHangingPromise } from '../dynamic-rendering-utils';
import { InvariantError } from '../../shared/lib/invariant-error';
export function createServerPathnameForMetadata(underlyingPathname, workStore) {
    const workUnitStore = workUnitAsyncStorage.getStore();
    if (workUnitStore) {
        switch(workUnitStore.type){
            case 'prerender':
            case 'prerender-client':
            case 'prerender-ppr':
            case 'prerender-legacy':
                {
                    return createPrerenderPathname(underlyingPathname, workStore, workUnitStore);
                }
            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 '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-client':
            throw Object.defineProperty(new InvariantError('createPrerenderPathname was called inside a client component scope.'), "__NEXT_ERROR_CODE", {
                value: "E694",
                enumerable: false,
                configurable: true
            });
        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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