// tslint:disable:no-console
import { removeTrailingSlash } from "./utils/remove-trailing-slash";
import { getClientBuildManifest, isAssetError, markAssetError } from "../../../client/route-loader";
import { handleClientScriptLoad } from "../../../client/script";
import isError, { getProperError } from "../../../lib/is-error";
import { denormalizePagePath } from "../page-path/denormalize-page-path";
import { normalizeLocalePath } from "../i18n/normalize-locale-path";
import mitt from "../mitt";
import { getLocationOrigin, getURL, loadGetInitialProps, ST } from "../utils";
import { isDynamicRoute } from "./utils/is-dynamic";
import { parseRelativeUrl } from "./utils/parse-relative-url";
import resolveRewrites from "./utils/resolve-rewrites";
import { getRouteMatcher } from "./utils/route-matcher";
import { getRouteRegex } from "./utils/route-regex";
import { formatWithValidation } from "./utils/format-url";
import { detectDomainLocale } from "../../../client/detect-domain-locale";
import { parsePath } from "./utils/parse-path";
import { addLocale } from "../../../client/add-locale";
import { removeLocale } from "../../../client/remove-locale";
import { removeBasePath } from "../../../client/remove-base-path";
import { addBasePath } from "../../../client/add-base-path";
import { hasBasePath } from "../../../client/has-base-path";
import { resolveHref } from "../../../client/resolve-href";
import { isAPIRoute } from "../../../lib/is-api-route";
import { getNextPathnameInfo } from "./utils/get-next-pathname-info";
import { formatNextPathnameInfo } from "./utils/format-next-pathname-info";
import { compareRouterStates } from "./utils/compare-states";
import { isLocalURL } from "./utils/is-local-url";
import { isBot } from "./utils/is-bot";
import { omit } from "./utils/omit";
import { interpolateAs } from "./utils/interpolate-as";
import { handleSmoothScroll } from "./utils/handle-smooth-scroll";
function buildCancellationError() {
    return Object.assign(new Error("Route Cancelled"), {
        cancelled: true
    });
}
export async function matchesMiddleware(options) {
    const matchers = await Promise.resolve(options.router.pageLoader.getMiddleware());
    if (!matchers) return false;
    const { pathname: asPathname } = parsePath(options.asPath);
    // remove basePath first since path prefix has to be in the order of `/${basePath}/${locale}`
    const cleanedAs = hasBasePath(asPathname) ? removeBasePath(asPathname) : asPathname;
    const asWithBasePathAndLocale = addBasePath(addLocale(cleanedAs, options.locale));
    // Check only path match on client. Matching "has" should be done on server
    // where we can access more info such as headers, HttpOnly cookie, etc.
    return matchers.some((m)=>new RegExp(m.regexp).test(asWithBasePathAndLocale));
}
function stripOrigin(url) {
    const origin = getLocationOrigin();
    return url.startsWith(origin) ? url.substring(origin.length) : url;
}
function prepareUrlAs(router, url, as) {
    // If url and as provided as an object representation,
    // we'll format them into the string version here.
    let [resolvedHref, resolvedAs] = resolveHref(router, url, true);
    const origin = getLocationOrigin();
    const hrefWasAbsolute = resolvedHref.startsWith(origin);
    const asWasAbsolute = resolvedAs && resolvedAs.startsWith(origin);
    resolvedHref = stripOrigin(resolvedHref);
    resolvedAs = resolvedAs ? stripOrigin(resolvedAs) : resolvedAs;
    const preparedUrl = hrefWasAbsolute ? resolvedHref : addBasePath(resolvedHref);
    const preparedAs = as ? stripOrigin(resolveHref(router, as)) : resolvedAs || resolvedHref;
    return {
        url: preparedUrl,
        as: asWasAbsolute ? preparedAs : addBasePath(preparedAs)
    };
}
function resolveDynamicRoute(pathname, pages) {
    const cleanPathname = removeTrailingSlash(denormalizePagePath(pathname));
    if (cleanPathname === "/404" || cleanPathname === "/_error") {
        return pathname;
    }
    // handle resolving href for dynamic routes
    if (!pages.includes(cleanPathname)) {
        // eslint-disable-next-line array-callback-return
        pages.some((page)=>{
            if (isDynamicRoute(page) && getRouteRegex(page).re.test(cleanPathname)) {
                pathname = page;
                return true;
            }
        });
    }
    return removeTrailingSlash(pathname);
}
function getMiddlewareData(source, response, options) {
    const nextConfig = {
        basePath: options.router.basePath,
        i18n: {
            locales: options.router.locales
        },
        trailingSlash: Boolean(process.env.__NEXT_TRAILING_SLASH)
    };
    const rewriteHeader = response.headers.get("x-nextjs-rewrite");
    let rewriteTarget = rewriteHeader || response.headers.get("x-nextjs-matched-path");
    const matchedPath = response.headers.get("x-matched-path");
    if (matchedPath && !rewriteTarget && !matchedPath.includes("__next_data_catchall") && !matchedPath.includes("/_error") && !matchedPath.includes("/404")) {
        // leverage x-matched-path to detect next.config.js rewrites
        rewriteTarget = matchedPath;
    }
    if (rewriteTarget) {
        if (rewriteTarget.startsWith("/") || process.env.__NEXT_EXTERNAL_MIDDLEWARE_REWRITE_RESOLVE) {
            const parsedRewriteTarget = parseRelativeUrl(rewriteTarget);
            const pathnameInfo = getNextPathnameInfo(parsedRewriteTarget.pathname, {
                nextConfig,
                parseData: true
            });
            let fsPathname = removeTrailingSlash(pathnameInfo.pathname);
            return Promise.all([
                options.router.pageLoader.getPageList(),
                getClientBuildManifest()
            ]).then((param)=>{
                let [pages, { __rewrites: rewrites }] = param;
                let as = addLocale(pathnameInfo.pathname, pathnameInfo.locale);
                if (isDynamicRoute(as) || !rewriteHeader && pages.includes(normalizeLocalePath(removeBasePath(as), options.router.locales).pathname)) {
                    const parsedSource = getNextPathnameInfo(parseRelativeUrl(source).pathname, {
                        nextConfig: process.env.__NEXT_HAS_REWRITES ? undefined : nextConfig,
                        parseData: true
                    });
                    as = addBasePath(parsedSource.pathname);
                    parsedRewriteTarget.pathname = as;
                }
                if (process.env.__NEXT_HAS_REWRITES) {
                    const result = resolveRewrites(as, pages, rewrites, parsedRewriteTarget.query, (path)=>resolveDynamicRoute(path, pages), options.router.locales);
                    if (result.matchedPage) {
                        parsedRewriteTarget.pathname = result.parsedAs.pathname;
                        as = parsedRewriteTarget.pathname;
                        Object.assign(parsedRewriteTarget.query, result.parsedAs.query);
                    }
                } else if (!pages.includes(fsPathname)) {
                    const resolvedPathname = resolveDynamicRoute(fsPathname, pages);
                    if (resolvedPathname !== fsPathname) {
                        fsPathname = resolvedPathname;
                    }
                }
                const resolvedHref = !pages.includes(fsPathname) ? resolveDynamicRoute(normalizeLocalePath(removeBasePath(parsedRewriteTarget.pathname), options.router.locales).pathname, pages) : fsPathname;
                if (isDynamicRoute(resolvedHref)) {
                    const matches = getRouteMatcher(getRouteRegex(resolvedHref))(as);
                    Object.assign(parsedRewriteTarget.query, matches || {});
                }
                return {
                    type: "rewrite",
                    parsedAs: parsedRewriteTarget,
                    resolvedHref
                };
            });
        }
        const src = parsePath(source);
        const pathname = formatNextPathnameInfo({
            ...getNextPathnameInfo(src.pathname, {
                nextConfig,
                parseData: true
            }),
            defaultLocale: options.router.defaultLocale,
            buildId: ""
        });
        return Promise.resolve({
            type: "redirect-external",
            destination: "" + pathname + src.query + src.hash
        });
    }
    const redirectTarget = response.headers.get("x-nextjs-redirect");
    if (redirectTarget) {
        if (redirectTarget.startsWith("/")) {
            const src = parsePath(redirectTarget);
            const pathname = formatNextPathnameInfo({
                ...getNextPathnameInfo(src.pathname, {
                    nextConfig,
                    parseData: true
                }),
                defaultLocale: options.router.defaultLocale,
                buildId: ""
            });
            return Promise.resolve({
                type: "redirect-internal",
                newAs: "" + pathname + src.query + src.hash,
                newUrl: "" + pathname + src.query + src.hash
            });
        }
        return Promise.resolve({
            type: "redirect-external",
            destination: redirectTarget
        });
    }
    return Promise.resolve({
        type: "next"
    });
}
async function withMiddlewareEffects(options) {
    const matches = await matchesMiddleware(options);
    if (!matches || !options.fetchData) {
        return null;
    }
    const data = await options.fetchData();
    const effect = await getMiddlewareData(data.dataHref, data.response, options);
    return {
        dataHref: data.dataHref,
        json: data.json,
        response: data.response,
        text: data.text,
        cacheKey: data.cacheKey,
        effect
    };
}
const manualScrollRestoration = process.env.__NEXT_SCROLL_RESTORATION && typeof window !== "undefined" && "scrollRestoration" in window.history && !!function() {
    try {
        let v = "__next";
        // eslint-disable-next-line no-sequences
        return sessionStorage.setItem(v, v), sessionStorage.removeItem(v), true;
    } catch (n) {}
}();
const SSG_DATA_NOT_FOUND = Symbol("SSG_DATA_NOT_FOUND");
function fetchRetry(url, attempts, options) {
    return fetch(url, {
        // Cookies are required to be present for Next.js' SSG "Preview Mode".
        // Cookies may also be required for `getServerSideProps`.
        //
        // > `fetch` won’t send cookies, unless you set the credentials init
        // > option.
        // https://developer.mozilla.org/docs/Web/API/Fetch_API/Using_Fetch
        //
        // > For maximum browser compatibility when it comes to sending &
        // > receiving cookies, always supply the `credentials: 'same-origin'`
        // > option instead of relying on the default.
        // https://github.com/github/fetch#caveats
        credentials: "same-origin",
        method: options.method || "GET",
        headers: Object.assign({}, options.headers, {
            "x-nextjs-data": "1"
        })
    }).then((response)=>{
        return !response.ok && attempts > 1 && response.status >= 500 ? fetchRetry(url, attempts - 1, options) : response;
    });
}
function tryToParseAsJSON(text) {
    try {
        return JSON.parse(text);
    } catch (error) {
        return null;
    }
}
function fetchNextData(param) {
    let { dataHref, inflightCache, isPrefetch, hasMiddleware, isServerRender, parseJSON, persistCache, isBackground, unstable_skipClientCache } = param;
    const { href: cacheKey } = new URL(dataHref, window.location.href);
    const getData = (params)=>{
        var _params_method;
        return fetchRetry(dataHref, isServerRender ? 3 : 1, {
            headers: Object.assign({}, isPrefetch ? {
                purpose: "prefetch"
            } : {}, isPrefetch && hasMiddleware ? {
                "x-middleware-prefetch": "1"
            } : {}),
            method: (_params_method = params == null ? void 0 : params.method) != null ? _params_method : "GET"
        }).then((response)=>{
            if (response.ok && (params == null ? void 0 : params.method) === "HEAD") {
                return {
                    dataHref,
                    response,
                    text: "",
                    json: {},
                    cacheKey
                };
            }
            return response.text().then((text)=>{
                if (!response.ok) {
                    /**
             * When the data response is a redirect because of a middleware
             * we do not consider it an error. The headers must bring the
             * mapped location.
             * TODO: Change the status code in the handler.
             */ if (hasMiddleware && [
                        301,
                        302,
                        307,
                        308
                    ].includes(response.status)) {
                        return {
                            dataHref,
                            response,
                            text,
                            json: {},
                            cacheKey
                        };
                    }
                    if (response.status === 404) {
                        var _tryToParseAsJSON;
                        if ((_tryToParseAsJSON = tryToParseAsJSON(text)) == null ? void 0 : _tryToParseAsJSON.notFound) {
                            return {
                                dataHref,
                                json: {
                                    notFound: SSG_DATA_NOT_FOUND
                                },
                                response,
                                text,
                                cacheKey
                            };
                        }
                    }
                    const error = new Error("Failed to load static props");
                    /**
             * We should only trigger a server-side transition if this was
             * caused on a client-side transition. Otherwise, we'd get into
             * an infinite loop.
             */ if (!isServerRender) {
                        markAssetError(error);
                    }
                    throw error;
                }
                return {
                    dataHref,
                    json: parseJSON ? tryToParseAsJSON(text) : null,
                    response,
                    text,
                    cacheKey
                };
            });
        }).then((data)=>{
            if (!persistCache || process.env.NODE_ENV !== "production" || data.response.headers.get("x-middleware-cache") === "no-cache") {
                delete inflightCache[cacheKey];
            }
            return data;
        }).catch((err)=>{
            if (!unstable_skipClientCache) {
                delete inflightCache[cacheKey];
            }
            if (// chrome
            err.message === "Failed to fetch" || // firefox
            err.message === "NetworkError when attempting to fetch resource." || // safari
            err.message === "Load failed") {
                markAssetError(err);
            }
            throw err;
        });
    };
    // when skipping client cache we wait to update
    // inflight cache until successful data response
    // this allows racing click event with fetching newer data
    // without blocking navigation when stale data is available
    if (unstable_skipClientCache && persistCache) {
        return getData({}).then((data)=>{
            inflightCache[cacheKey] = Promise.resolve(data);
            return data;
        });
    }
    if (inflightCache[cacheKey] !== undefined) {
        return inflightCache[cacheKey];
    }
    return inflightCache[cacheKey] = getData(isBackground ? {
        method: "HEAD"
    } : {});
}
export function createKey() {
    return Math.random().toString(36).slice(2, 10);
}
function handleHardNavigation(param) {
    let { url, router } = param;
    // ensure we don't trigger a hard navigation to the same
    // URL as this can end up with an infinite refresh
    if (url === addBasePath(addLocale(router.asPath, router.locale))) {
        throw new Error("Invariant: attempted to hard navigate to the same URL " + url + " " + location.href);
    }
    window.location.href = url;
}
const getCancelledHandler = (param)=>{
    let { route, router } = param;
    let cancelled = false;
    const cancel = router.clc = ()=>{
        cancelled = true;
    };
    const handleCancelled = ()=>{
        if (cancelled) {
            const error = new Error('Abort fetching component for route: "' + route + '"');
            error.cancelled = true;
            throw error;
        }
        if (cancel === router.clc) {
            router.clc = null;
        }
    };
    return handleCancelled;
};
class Router {
    reload() {
        window.location.reload();
    }
    /**
   * Go back in history
   */ back() {
        window.history.back();
    }
    /**
   * Go forward in history
   */ forward() {
        window.history.forward();
    }
    /**
   * Performs a `pushState` with arguments
   * @param url of the route
   * @param as masks `url` for the browser
   * @param options object you can define `shallow` and other options
   */ push(url, as, options) {
        if (options === void 0) options = {};
        if (process.env.__NEXT_SCROLL_RESTORATION) {
            // TODO: remove in the future when we update history before route change
            // is complete, as the popstate event should handle this capture.
            if (manualScrollRestoration) {
                try {
                    // Snapshot scroll position right before navigating to a new page:
                    sessionStorage.setItem("__next_scroll_" + this._key, JSON.stringify({
                        x: self.pageXOffset,
                        y: self.pageYOffset
                    }));
                } catch (e) {}
            }
        }
        ({ url, as } = prepareUrlAs(this, url, as));
        return this.change("pushState", url, as, options);
    }
    /**
   * Performs a `replaceState` with arguments
   * @param url of the route
   * @param as masks `url` for the browser
   * @param options object you can define `shallow` and other options
   */ replace(url, as, options) {
        if (options === void 0) options = {};
        ({ url, as } = prepareUrlAs(this, url, as));
        return this.change("replaceState", url, as, options);
    }
    async _bfl(as, resolvedAs, locale, skipNavigate) {
        if (process.env.__NEXT_CLIENT_ROUTER_FILTER_ENABLED) {
            let matchesBflStatic = false;
            let matchesBflDynamic = false;
            for (const curAs of [
                as,
                resolvedAs
            ]){
                if (curAs) {
                    const asNoSlash = removeTrailingSlash(new URL(curAs, "http://n").pathname);
                    const asNoSlashLocale = addBasePath(addLocale(asNoSlash, locale || this.locale));
                    if (asNoSlash !== removeTrailingSlash(new URL(this.asPath, "http://n").pathname)) {
                        var _this__bfl_s, _this__bfl_s1;
                        matchesBflStatic = matchesBflStatic || !!((_this__bfl_s = this._bfl_s) == null ? void 0 : _this__bfl_s.contains(asNoSlash)) || !!((_this__bfl_s1 = this._bfl_s) == null ? void 0 : _this__bfl_s1.contains(asNoSlashLocale));
                        for (const normalizedAS of [
                            asNoSlash,
                            asNoSlashLocale
                        ]){
                            // if any sub-path of as matches a dynamic filter path
                            // it should be hard navigated
                            const curAsParts = normalizedAS.split("/");
                            for(let i = 0; !matchesBflDynamic && i < curAsParts.length + 1; i++){
                                var _this__bfl_d;
                                const currentPart = curAsParts.slice(0, i).join("/");
                                if (currentPart && ((_this__bfl_d = this._bfl_d) == null ? void 0 : _this__bfl_d.contains(currentPart))) {
                                    matchesBflDynamic = true;
                                    break;
                                }
                            }
                        }
                        // if the client router filter is matched then we trigger
                        // a hard navigation
                        if (matchesBflStatic || matchesBflDynamic) {
                            if (skipNavigate) {
                                return true;
                            }
                            handleHardNavigation({
                                url: addBasePath(addLocale(as, locale || this.locale, this.defaultLocale)),
                                router: this
                            });
                            return new Promise(()=>{});
                        }
                    }
                }
            }
        }
        return false;
    }
    async change(method, url, as, options, forcedScroll) {
        var _this_components_pathname;
        if (!isLocalURL(url)) {
            handleHardNavigation({
                url,
                router: this
            });
            return false;
        }
        // WARNING: `_h` is an internal option for handing Next.js client-side
        // hydration. Your app should _never_ use this property. It may change at
        // any time without notice.
        const isQueryUpdating = options._h === 1;
        if (!isQueryUpdating && !options.shallow) {
            await this._bfl(as, undefined, options.locale);
        }
        let shouldResolveHref = isQueryUpdating || options._shouldResolveHref || parsePath(url).pathname === parsePath(as).pathname;
        const nextState = {
            ...this.state
        };
        // for static pages with query params in the URL we delay
        // marking the router ready until after the query is updated
        // or a navigation has occurred
        const readyStateChange = this.isReady !== true;
        this.isReady = true;
        const isSsr = this.isSsr;
        if (!isQueryUpdating) {
            this.isSsr = false;
        }
        // if a route transition is already in progress before
        // the query updating is triggered ignore query updating
        if (isQueryUpdating && this.clc) {
            return false;
        }
        const prevLocale = nextState.locale;
        if (process.env.__NEXT_I18N_SUPPORT) {
            nextState.locale = options.locale === false ? this.defaultLocale : options.locale || nextState.locale;
            if (typeof options.locale === "undefined") {
                options.locale = nextState.locale;
            }
            const parsedAs = parseRelativeUrl(hasBasePath(as) ? removeBasePath(as) : as);
            const localePathResult = normalizeLocalePath(parsedAs.pathname, this.locales);
            if (localePathResult.detectedLocale) {
                nextState.locale = localePathResult.detectedLocale;
                parsedAs.pathname = addBasePath(parsedAs.pathname);
                as = formatWithValidation(parsedAs);
                url = addBasePath(normalizeLocalePath(hasBasePath(url) ? removeBasePath(url) : url, this.locales).pathname);
            }
            let didNavigate = false;
            // we need to wrap this in the env check again since regenerator runtime
            // moves this on its own due to the return
            if (process.env.__NEXT_I18N_SUPPORT) {
                var _this_locales;
                // if the locale isn't configured hard navigate to show 404 page
                if (!((_this_locales = this.locales) == null ? void 0 : _this_locales.includes(nextState.locale))) {
                    parsedAs.pathname = addLocale(parsedAs.pathname, nextState.locale);
                    handleHardNavigation({
                        url: formatWithValidation(parsedAs),
                        router: this
                    });
                    // this was previously a return but was removed in favor
                    // of better dead code elimination with regenerator runtime
                    didNavigate = true;
                }
            }
            const detectedDomain = detectDomainLocale(this.domainLocales, undefined, nextState.locale);
            // we need to wrap this in the env check again since regenerator runtime
            // moves this on its own due to the return
            if (process.env.__NEXT_I18N_SUPPORT) {
                // if we are navigating to a domain locale ensure we redirect to the
                // correct domain
                if (!didNavigate && detectedDomain && this.isLocaleDomain && self.location.hostname !== detectedDomain.domain) {
                    const asNoBasePath = removeBasePath(as);
                    handleHardNavigation({
                        url: "http" + (detectedDomain.http ? "" : "s") + "://" + detectedDomain.domain + addBasePath("" + (nextState.locale === detectedDomain.defaultLocale ? "" : "/" + nextState.locale) + (asNoBasePath === "/" ? "" : asNoBasePath) || "/"),
                        router: this
                    });
                    // this was previously a return but was removed in favor
                    // of better dead code elimination with regenerator runtime
                    didNavigate = true;
                }
            }
            if (didNavigate) {
                return new Promise(()=>{});
            }
        }
        // marking route changes as a navigation start entry
        if (ST) {
            performance.mark("routeChange");
        }
        const { shallow = false, scroll = true } = options;
        const routeProps = {
            shallow
        };
        if (this._inFlightRoute && this.clc) {
            if (!isSsr) {
                Router.events.emit("routeChangeError", buildCancellationError(), this._inFlightRoute, routeProps);
            }
            this.clc();
            this.clc = null;
        }
        as = addBasePath(addLocale(hasBasePath(as) ? removeBasePath(as) : as, options.locale, this.defaultLocale));
        const cleanedAs = removeLocale(hasBasePath(as) ? removeBasePath(as) : as, nextState.locale);
        this._inFlightRoute = as;
        const localeChange = prevLocale !== nextState.locale;
        // If the url change is only related to a hash change
        // We should not proceed. We should only change the state.
        if (!isQueryUpdating && this.onlyAHashChange(cleanedAs) && !localeChange) {
            nextState.asPath = cleanedAs;
            Router.events.emit("hashChangeStart", as, routeProps);
            // TODO: do we need the resolved href when only a hash change?
            this.changeState(method, url, as, {
                ...options,
                scroll: false
            });
            if (scroll) {
                this.scrollToHash(cleanedAs);
            }
            try {
                await this.set(nextState, this.components[nextState.route], null);
            } catch (err) {
                if (isError(err) && err.cancelled) {
                    Router.events.emit("routeChangeError", err, cleanedAs, routeProps);
                }
                throw err;
            }
            Router.events.emit("hashChangeComplete", as, routeProps);
            return true;
        }
        let parsed = parseRelativeUrl(url);
        let { pathname, query } = parsed;
        // The build manifest needs to be loaded before auto-static dynamic pages
        // get their query parameters to allow ensuring they can be parsed properly
        // when rewritten to
        let pages, rewrites;
        try {
            [pages, { __rewrites: rewrites }] = await Promise.all([
                this.pageLoader.getPageList(),
                getClientBuildManifest(),
                this.pageLoader.getMiddleware()
            ]);
        } catch (err) {
            // If we fail to resolve the page list or client-build manifest, we must
            // do a server-side transition:
            handleHardNavigation({
                url: as,
                router: this
            });
            return false;
        }
        // If asked to change the current URL we should reload the current page
        // (not location.reload() but reload getInitialProps and other Next.js stuffs)
        // We also need to set the method = replaceState always
        // as this should not go into the history (That's how browsers work)
        // We should compare the new asPath to the current asPath, not the url
        if (!this.urlIsNew(cleanedAs) && !localeChange) {
            method = "replaceState";
        }
        // we need to resolve the as value using rewrites for dynamic SSG
        // pages to allow building the data URL correctly
        let resolvedAs = as;
        // url and as should always be prefixed with basePath by this
        // point by either next/link or router.push/replace so strip the
        // basePath from the pathname to match the pages dir 1-to-1
        pathname = pathname ? removeTrailingSlash(removeBasePath(pathname)) : pathname;
        let route = removeTrailingSlash(pathname);
        const parsedAsPathname = as.startsWith("/") && parseRelativeUrl(as).pathname;
        // if we detected the path as app route during prefetching
        // trigger hard navigation
        if ((_this_components_pathname = this.components[pathname]) == null ? void 0 : _this_components_pathname.__appRouter) {
            handleHardNavigation({
                url: as,
                router: this
            });
            return new Promise(()=>{});
        }
        const isMiddlewareRewrite = !!(parsedAsPathname && route !== parsedAsPathname && (!isDynamicRoute(route) || !getRouteMatcher(getRouteRegex(route))(parsedAsPathname)));
        // we don't attempt resolve asPath when we need to execute
        // middleware as the resolving will occur server-side
        const isMiddlewareMatch = !options.shallow && await matchesMiddleware({
            asPath: as,
            locale: nextState.locale,
            router: this
        });
        if (isQueryUpdating && isMiddlewareMatch) {
            shouldResolveHref = false;
        }
        if (shouldResolveHref && pathname !== "/_error") {
            options._shouldResolveHref = true;
            if (process.env.__NEXT_HAS_REWRITES && as.startsWith("/")) {
                const rewritesResult = resolveRewrites(addBasePath(addLocale(cleanedAs, nextState.locale), true), pages, rewrites, query, (p)=>resolveDynamicRoute(p, pages), this.locales);
                if (rewritesResult.externalDest) {
                    handleHardNavigation({
                        url: as,
                        router: this
                    });
                    return true;
                }
                if (!isMiddlewareMatch) {
                    resolvedAs = rewritesResult.asPath;
                }
                if (rewritesResult.matchedPage && rewritesResult.resolvedHref) {
                    // if this directly matches a page we need to update the href to
                    // allow the correct page chunk to be loaded
                    pathname = rewritesResult.resolvedHref;
                    parsed.pathname = addBasePath(pathname);
                    if (!isMiddlewareMatch) {
                        url = formatWithValidation(parsed);
                    }
                }
            } else {
                parsed.pathname = resolveDynamicRoute(pathname, pages);
                if (parsed.pathname !== pathname) {
                    pathname = parsed.pathname;
                    parsed.pathname = addBasePath(pathname);
                    if (!isMiddlewareMatch) {
                        url = formatWithValidation(parsed);
                    }
                }
            }
        }
        if (!isLocalURL(as)) {
            if (process.env.NODE_ENV !== "production") {
                throw new Error('Invalid href: "' + url + '" and as: "' + as + '", received relative href and external as' + "\nSee more info: https://nextjs.org/docs/messages/invalid-relative-url-external-as");
            }
            handleHardNavigation({
                url: as,
                router: this
            });
            return false;
        }
        resolvedAs = removeLocale(removeBasePath(resolvedAs), nextState.locale);
        route = removeTrailingSlash(pathname);
        let routeMatch = false;
        if (isDynamicRoute(route)) {
            const parsedAs = parseRelativeUrl(resolvedAs);
            const asPathname = parsedAs.pathname;
            const routeRegex = getRouteRegex(route);
            routeMatch = getRouteMatcher(routeRegex)(asPathname);
            const shouldInterpolate = route === asPathname;
            const interpolatedAs = shouldInterpolate ? interpolateAs(route, asPathname, query) : {};
            if (!routeMatch || shouldInterpolate && !interpolatedAs.result) {
                const missingParams = Object.keys(routeRegex.groups).filter((param)=>!query[param] && !routeRegex.groups[param].optional);
                if (missingParams.length > 0 && !isMiddlewareMatch) {
                    if (process.env.NODE_ENV !== "production") {
                        console.warn("" + (shouldInterpolate ? "Interpolating href" : "Mismatching `as` and `href`") + " failed to manually provide " + ("the params: " + missingParams.join(", ") + " in the `href`'s `query`"));
                    }
                    throw new Error((shouldInterpolate ? "The provided `href` (" + url + ") value is missing query values (" + missingParams.join(", ") + ") to be interpolated properly. " : "The provided `as` value (" + asPathname + ") is incompatible with the `href` value (" + route + "). ") + ("Read more: https://nextjs.org/docs/messages/" + (shouldInterpolate ? "href-interpolation-failed" : "incompatible-href-as")));
                }
            } else if (shouldInterpolate) {
                as = formatWithValidation(Object.assign({}, parsedAs, {
                    pathname: interpolatedAs.result,
                    query: omit(query, interpolatedAs.params)
                }));
            } else {
                // Merge params into `query`, overwriting any specified in search
                Object.assign(query, routeMatch);
            }
        }
        if (!isQueryUpdating) {
            Router.events.emit("routeChangeStart", as, routeProps);
        }
        const isErrorRoute = this.pathname === "/404" || this.pathname === "/_error";
        try {
            var _self___NEXT_DATA___props_pageProps, _self___NEXT_DATA___props, _routeInfo_props;
            let routeInfo = await this.getRouteInfo({
                route,
                pathname,
                query,
                as,
                resolvedAs,
                routeProps,
                locale: nextState.locale,
                isPreview: nextState.isPreview,
                hasMiddleware: isMiddlewareMatch,
                unstable_skipClientCache: options.unstable_skipClientCache,
                isQueryUpdating: isQueryUpdating && !this.isFallback,
                isMiddlewareRewrite
            });
            if (!isQueryUpdating && !options.shallow) {
                await this._bfl(as, "resolvedAs" in routeInfo ? routeInfo.resolvedAs : undefined, nextState.locale);
            }
            if ("route" in routeInfo && isMiddlewareMatch) {
                pathname = routeInfo.route || route;
                route = pathname;
                if (!routeProps.shallow) {
                    query = Object.assign({}, routeInfo.query || {}, query);
                }
                const cleanedParsedPathname = hasBasePath(parsed.pathname) ? removeBasePath(parsed.pathname) : parsed.pathname;
                if (routeMatch && pathname !== cleanedParsedPathname) {
                    Object.keys(routeMatch).forEach((key)=>{
                        if (routeMatch && query[key] === routeMatch[key]) {
                            delete query[key];
                        }
                    });
                }
                if (isDynamicRoute(pathname)) {
                    const prefixedAs = !routeProps.shallow && routeInfo.resolvedAs ? routeInfo.resolvedAs : addBasePath(addLocale(new URL(as, location.href).pathname, nextState.locale), true);
                    let rewriteAs = prefixedAs;
                    if (hasBasePath(rewriteAs)) {
                        rewriteAs = removeBasePath(rewriteAs);
                    }
                    if (process.env.__NEXT_I18N_SUPPORT) {
                        const localeResult = normalizeLocalePath(rewriteAs, this.locales);
                        nextState.locale = localeResult.detectedLocale || nextState.locale;
                        rewriteAs = localeResult.pathname;
                    }
                    const routeRegex = getRouteRegex(pathname);
                    const curRouteMatch = getRouteMatcher(routeRegex)(new URL(rewriteAs, location.href).pathname);
                    if (curRouteMatch) {
                        Object.assign(query, curRouteMatch);
                    }
                }
            }
            // If the routeInfo brings a redirect we simply apply it.
            if ("type" in routeInfo) {
                if (routeInfo.type === "redirect-internal") {
                    return this.change(method, routeInfo.newUrl, routeInfo.newAs, options);
                } else {
                    handleHardNavigation({
                        url: routeInfo.destination,
                        router: this
                    });
                    return new Promise(()=>{});
                }
            }
            const component = routeInfo.Component;
            if (component && component.unstable_scriptLoader) {
                const scripts = [].concat(component.unstable_scriptLoader());
                scripts.forEach((script)=>{
                    handleClientScriptLoad(script.props);
                });
            }
            // handle redirect on client-transition
            if ((routeInfo.__N_SSG || routeInfo.__N_SSP) && routeInfo.props) {
                if (routeInfo.props.pageProps && routeInfo.props.pageProps.__N_REDIRECT) {
                    // Use the destination from redirect without adding locale
                    options.locale = false;
                    const destination = routeInfo.props.pageProps.__N_REDIRECT;
                    // check if destination is internal (resolves to a page) and attempt
                    // client-navigation if it is falling back to hard navigation if
                    // it's not
                    if (destination.startsWith("/") && routeInfo.props.pageProps.__N_REDIRECT_BASE_PATH !== false) {
                        const parsedHref = parseRelativeUrl(destination);
                        parsedHref.pathname = resolveDynamicRoute(parsedHref.pathname, pages);
                        const { url: newUrl, as: newAs } = prepareUrlAs(this, destination, destination);
                        return this.change(method, newUrl, newAs, options);
                    }
                    handleHardNavigation({
                        url: destination,
                        router: this
                    });
                    return new Promise(()=>{});
                }
                nextState.isPreview = !!routeInfo.props.__N_PREVIEW;
                // handle SSG data 404
                if (routeInfo.props.notFound === SSG_DATA_NOT_FOUND) {
                    let notFoundRoute;
                    try {
                        await this.fetchComponent("/404");
                        notFoundRoute = "/404";
                    } catch (_) {
                        notFoundRoute = "/_error";
                    }
                    routeInfo = await this.getRouteInfo({
                        route: notFoundRoute,
                        pathname: notFoundRoute,
                        query,
                        as,
                        resolvedAs,
                        routeProps: {
                            shallow: false
                        },
                        locale: nextState.locale,
                        isPreview: nextState.isPreview,
                        isNotFound: true
                    });
                    if ("type" in routeInfo) {
                        throw new Error("Unexpected middleware effect on /404");
                    }
                }
            }
            if (isQueryUpdating && this.pathname === "/_error" && ((_self___NEXT_DATA___props = self.__NEXT_DATA__.props) == null ? void 0 : (_self___NEXT_DATA___props_pageProps = _self___NEXT_DATA___props.pageProps) == null ? void 0 : _self___NEXT_DATA___props_pageProps.statusCode) === 500 && ((_routeInfo_props = routeInfo.props) == null ? void 0 : _routeInfo_props.pageProps)) {
                // ensure statusCode is still correct for static 500 page
                // when updating query information
                routeInfo.props.pageProps.statusCode = 500;
            }
            var _routeInfo_route;
            // shallow routing is only allowed for same page URL changes.
            const isValidShallowRoute = options.shallow && nextState.route === ((_routeInfo_route = routeInfo.route) != null ? _routeInfo_route : route);
            var _options_scroll;
            const shouldScroll = (_options_scroll = options.scroll) != null ? _options_scroll : !isQueryUpdating && !isValidShallowRoute;
            const resetScroll = shouldScroll ? {
                x: 0,
                y: 0
            } : null;
            const upcomingScrollState = forcedScroll != null ? forcedScroll : resetScroll;
            // the new state that the router gonna set
            const upcomingRouterState = {
                ...nextState,
                route,
                pathname,
                query,
                asPath: cleanedAs,
                isFallback: false
            };
            // When the page being rendered is the 404 page, we should only update the
            // query parameters. Route changes here might add the basePath when it
            // wasn't originally present. This is also why this block is before the
            // below `changeState` call which updates the browser's history (changing
            // the URL).
            if (isQueryUpdating && isErrorRoute) {
                var _self___NEXT_DATA___props_pageProps1, _self___NEXT_DATA___props1, _routeInfo_props1;
                routeInfo = await this.getRouteInfo({
                    route: this.pathname,
                    pathname: this.pathname,
                    query,
                    as,
                    resolvedAs,
                    routeProps: {
                        shallow: false
                    },
                    locale: nextState.locale,
                    isPreview: nextState.isPreview,
                    isQueryUpdating: isQueryUpdating && !this.isFallback
                });
                if ("type" in routeInfo) {
                    throw new Error("Unexpected middleware effect on " + this.pathname);
                }
                if (this.pathname === "/_error" && ((_self___NEXT_DATA___props1 = self.__NEXT_DATA__.props) == null ? void 0 : (_self___NEXT_DATA___props_pageProps1 = _self___NEXT_DATA___props1.pageProps) == null ? void 0 : _self___NEXT_DATA___props_pageProps1.statusCode) === 500 && ((_routeInfo_props1 = routeInfo.props) == null ? void 0 : _routeInfo_props1.pageProps)) {
                    // ensure statusCode is still correct for static 500 page
                    // when updating query information
                    routeInfo.props.pageProps.statusCode = 500;
                }
                try {
                    await this.set(upcomingRouterState, routeInfo, upcomingScrollState);
                } catch (err) {
                    if (isError(err) && err.cancelled) {
                        Router.events.emit("routeChangeError", err, cleanedAs, routeProps);
                    }
                    throw err;
                }
                return true;
            }
            Router.events.emit("beforeHistoryChange", as, routeProps);
            this.changeState(method, url, as, options);
            // for query updates we can skip it if the state is unchanged and we don't
            // need to scroll
            // https://github.com/vercel/next.js/issues/37139
            const canSkipUpdating = isQueryUpdating && !upcomingScrollState && !readyStateChange && !localeChange && compareRouterStates(upcomingRouterState, this.state);
            if (!canSkipUpdating) {
                try {
                    await this.set(upcomingRouterState, routeInfo, upcomingScrollState);
                } catch (e) {
                    if (e.cancelled) routeInfo.error = routeInfo.error || e;
                    else throw e;
                }
                if (routeInfo.error) {
                    if (!isQueryUpdating) {
                        Router.events.emit("routeChangeError", routeInfo.error, cleanedAs, routeProps);
                    }
                    throw routeInfo.error;
                }
                if (process.env.__NEXT_I18N_SUPPORT) {
                    if (nextState.locale) {
                        document.documentElement.lang = nextState.locale;
                    }
                }
                if (!isQueryUpdating) {
                    Router.events.emit("routeChangeComplete", as, routeProps);
                }
                // A hash mark # is the optional last part of a URL
                const hashRegex = /#.+$/;
                if (shouldScroll && hashRegex.test(as)) {
                    this.scrollToHash(as);
                }
            }
            return true;
        } catch (err) {
            if (isError(err) && err.cancelled) {
                return false;
            }
            throw err;
        }
    }
    changeState(method, url, as, options) {
        if (options === void 0) options = {};
        if (process.env.NODE_ENV !== "production") {
            if (typeof window.history === "undefined") {
                console.error("Warning: window.history is not available.");
                return;
            }
            if (typeof window.history[method] === "undefined") {
                console.error("Warning: window.history." + method + " is not available");
                return;
            }
        }
        if (method !== "pushState" || getURL() !== as) {
            this._shallow = options.shallow;
            window.history[method]({
                url,
                as,
                options,
                __N: true,
                key: this._key = method !== "pushState" ? this._key : createKey()
            }, // Most browsers currently ignores this parameter, although they may use it in the future.
            // Passing the empty string here should be safe against future changes to the method.
            // https://developer.mozilla.org/docs/Web/API/History/replaceState
            "", as);
        }
    }
    async handleRouteInfoError(err, pathname, query, as, routeProps, loadErrorFail) {
        console.error(err);
        if (err.cancelled) {
            // bubble up cancellation errors
            throw err;
        }
        if (isAssetError(err) || loadErrorFail) {
            Router.events.emit("routeChangeError", err, as, routeProps);
            // If we can't load the page it could be one of following reasons
            //  1. Page doesn't exists
            //  2. Page does exist in a different zone
            //  3. Internal error while loading the page
            // So, doing a hard reload is the proper way to deal with this.
            handleHardNavigation({
                url: as,
                router: this
            });
            // Changing the URL doesn't block executing the current code path.
            // So let's throw a cancellation error stop the routing logic.
            throw buildCancellationError();
        }
        try {
            let props;
            const { page: Component, styleSheets } = await this.fetchComponent("/_error");
            const routeInfo = {
                props,
                Component,
                styleSheets,
                err,
                error: err
            };
            if (!routeInfo.props) {
                try {
                    routeInfo.props = await this.getInitialProps(Component, {
                        err,
                        pathname,
                        query
                    });
                } catch (gipErr) {
                    console.error("Error in error page `getInitialProps`: ", gipErr);
                    routeInfo.props = {};
                }
            }
            return routeInfo;
        } catch (routeInfoErr) {
            return this.handleRouteInfoError(isError(routeInfoErr) ? routeInfoErr : new Error(routeInfoErr + ""), pathname, query, as, routeProps, true);
        }
    }
    async getRouteInfo(param) {
        let { route: requestedRoute, pathname, query, as, resolvedAs, routeProps, locale, hasMiddleware, isPreview, unstable_skipClientCache, isQueryUpdating, isMiddlewareRewrite, isNotFound } = param;
        /**
     * This `route` binding can change if there's a rewrite
     * so we keep a reference to the original requested route
     * so we can store the cache for it and avoid re-requesting every time
     * for shallow routing purposes.
     */ let route = requestedRoute;
        try {
            var _data_effect, _data_effect1, _data_effect2, _data_response;
            let existingInfo = this.components[route];
            if (routeProps.shallow && existingInfo && this.route === route) {
                return existingInfo;
            }
            const handleCancelled = getCancelledHandler({
                route,
                router: this
            });
            if (hasMiddleware) {
                existingInfo = undefined;
            }
            let cachedRouteInfo = existingInfo && !("initial" in existingInfo) && process.env.NODE_ENV !== "development" ? existingInfo : undefined;
            const isBackground = isQueryUpdating;
            const fetchNextDataParams = {
                dataHref: this.pageLoader.getDataHref({
                    href: formatWithValidation({
                        pathname,
                        query
                    }),
                    skipInterpolation: true,
                    asPath: isNotFound ? "/404" : resolvedAs,
                    locale
                }),
                hasMiddleware: true,
                isServerRender: this.isSsr,
                parseJSON: true,
                inflightCache: isBackground ? this.sbc : this.sdc,
                persistCache: !isPreview,
                isPrefetch: false,
                unstable_skipClientCache,
                isBackground
            };
            let data = isQueryUpdating && !isMiddlewareRewrite ? null : await withMiddlewareEffects({
                fetchData: ()=>fetchNextData(fetchNextDataParams),
                asPath: isNotFound ? "/404" : resolvedAs,
                locale: locale,
                router: this
            }).catch((err)=>{
                // we don't hard error during query updating
                // as it's un-necessary and doesn't need to be fatal
                // unless it is a fallback route and the props can't
                // be loaded
                if (isQueryUpdating) {
                    return null;
                }
                throw err;
            });
            // when rendering error routes we don't apply middleware
            // effects
            if (data && (pathname === "/_error" || pathname === "/404")) {
                data.effect = undefined;
            }
            if (isQueryUpdating) {
                if (!data) {
                    data = {
                        json: self.__NEXT_DATA__.props
                    };
                } else {
                    data.json = self.__NEXT_DATA__.props;
                }
            }
            handleCancelled();
            if ((data == null ? void 0 : (_data_effect = data.effect) == null ? void 0 : _data_effect.type) === "redirect-internal" || (data == null ? void 0 : (_data_effect1 = data.effect) == null ? void 0 : _data_effect1.type) === "redirect-external") {
                return data.effect;
            }
            if ((data == null ? void 0 : (_data_effect2 = data.effect) == null ? void 0 : _data_effect2.type) === "rewrite") {
                const resolvedRoute = removeTrailingSlash(data.effect.resolvedHref);
                const pages = await this.pageLoader.getPageList();
                // during query updating the page must match although during
                // client-transition a redirect that doesn't match a page
                // can be returned and this should trigger a hard navigation
                // which is valid for incremental migration
                if (!isQueryUpdating || pages.includes(resolvedRoute)) {
                    route = resolvedRoute;
                    pathname = data.effect.resolvedHref;
                    query = {
                        ...query,
                        ...data.effect.parsedAs.query
                    };
                    resolvedAs = removeBasePath(normalizeLocalePath(data.effect.parsedAs.pathname, this.locales).pathname);
                    // Check again the cache with the new destination.
                    existingInfo = this.components[route];
                    if (routeProps.shallow && existingInfo && this.route === route && !hasMiddleware) {
                        // If we have a match with the current route due to rewrite,
                        // we can copy the existing information to the rewritten one.
                        // Then, we return the information along with the matched route.
                        return {
                            ...existingInfo,
                            route
                        };
                    }
                }
            }
            if (isAPIRoute(route)) {
                handleHardNavigation({
                    url: as,
                    router: this
                });
                return new Promise(()=>{});
            }
            const routeInfo = cachedRouteInfo || await this.fetchComponent(route).then((res)=>({
                    Component: res.page,
                    styleSheets: res.styleSheets,
                    __N_SSG: res.mod.__N_SSG,
                    __N_SSP: res.mod.__N_SSP
                }));
            if (process.env.NODE_ENV !== "production") {
                const { isValidElementType } = require("next/dist/compiled/react-is");
                if (!isValidElementType(routeInfo.Component)) {
                    throw new Error('The default export is not a React Component in page: "' + pathname + '"');
                }
            }
            const wasBailedPrefetch = data == null ? void 0 : (_data_response = data.response) == null ? void 0 : _data_response.headers.get("x-middleware-skip");
            const shouldFetchData = routeInfo.__N_SSG || routeInfo.__N_SSP;
            // For non-SSG prefetches that bailed before sending data
            // we clear the cache to fetch full response
            if (wasBailedPrefetch && (data == null ? void 0 : data.dataHref)) {
                delete this.sdc[data.dataHref];
            }
            const { props, cacheKey } = await this._getData(async ()=>{
                if (shouldFetchData) {
                    if ((data == null ? void 0 : data.json) && !wasBailedPrefetch) {
                        return {
                            cacheKey: data.cacheKey,
                            props: data.json
                        };
                    }
                    const dataHref = (data == null ? void 0 : data.dataHref) ? data.dataHref : this.pageLoader.getDataHref({
                        href: formatWithValidation({
                            pathname,
                            query
                        }),
                        asPath: resolvedAs,
                        locale
                    });
                    const fetched = await fetchNextData({
                        dataHref,
                        isServerRender: this.isSsr,
                        parseJSON: true,
                        inflightCache: wasBailedPrefetch ? {} : this.sdc,
                        persistCache: !isPreview,
                        isPrefetch: false,
                        unstable_skipClientCache
                    });
                    return {
                        cacheKey: fetched.cacheKey,
                        props: fetched.json || {}
                    };
                }
                return {
                    headers: {},
                    props: await this.getInitialProps(routeInfo.Component, // we provide AppTree later so this needs to be `any`
                    {
                        pathname,
                        query,
                        asPath: as,
                        locale,
                        locales: this.locales,
                        defaultLocale: this.defaultLocale
                    })
                };
            });
            // Only bust the data cache for SSP routes although
            // middleware can skip cache per request with
            // x-middleware-cache: no-cache as well
            if (routeInfo.__N_SSP && fetchNextDataParams.dataHref && cacheKey) {
                delete this.sdc[cacheKey];
            }
            // we kick off a HEAD request in the background
            // when a non-prefetch request is made to signal revalidation
            if (!this.isPreview && routeInfo.__N_SSG && process.env.NODE_ENV !== "development" && !isQueryUpdating) {
                fetchNextData(Object.assign({}, fetchNextDataParams, {
                    isBackground: true,
                    persistCache: false,
                    inflightCache: this.sbc
                })).catch(()=>{});
            }
            props.pageProps = Object.assign({}, props.pageProps);
            routeInfo.props = props;
            routeInfo.route = route;
            routeInfo.query = query;
            routeInfo.resolvedAs = resolvedAs;
            this.components[route] = routeInfo;
            return routeInfo;
        } catch (err) {
            return this.handleRouteInfoError(getProperError(err), pathname, query, as, routeProps);
        }
    }
    set(state, data, resetScroll) {
        this.state = state;
        return this.sub(data, this.components["/_app"].Component, resetScroll);
    }
    /**
   * Callback to execute before replacing router state
   * @param cb callback to be executed
   */ beforePopState(cb) {
        this._bps = cb;
    }
    onlyAHashChange(as) {
        if (!this.asPath) return false;
        const [oldUrlNoHash, oldHash] = this.asPath.split("#", 2);
        const [newUrlNoHash, newHash] = as.split("#", 2);
        // Makes sure we scroll to the provided hash if the url/hash are the same
        if (newHash && oldUrlNoHash === newUrlNoHash && oldHash === newHash) {
            return true;
        }
        // If the urls are change, there's more than a hash change
        if (oldUrlNoHash !== newUrlNoHash) {
            return false;
        }
        // If the hash has changed, then it's a hash only change.
        // This check is necessary to handle both the enter and
        // leave hash === '' cases. The identity case falls through
        // and is treated as a next reload.
        return oldHash !== newHash;
    }
    scrollToHash(as) {
        const [, hash = ""] = as.split("#", 2);
        handleSmoothScroll(()=>{
            // Scroll to top if the hash is just `#` with no value or `#top`
            // To mirror browsers
            if (hash === "" || hash === "top") {
                window.scrollTo(0, 0);
                return;
            }
            // Decode hash to make non-latin anchor works.
            const rawHash = decodeURIComponent(hash);
            // First we check if the element by id is found
            const idEl = document.getElementById(rawHash);
            if (idEl) {
                idEl.scrollIntoView();
                return;
            }
            // If there's no element with the id, we check the `name` property
            // To mirror browsers
            const nameEl = document.getElementsByName(rawHash)[0];
            if (nameEl) {
                nameEl.scrollIntoView();
            }
        }, {
            onlyHashChange: this.onlyAHashChange(as)
        });
    }
    urlIsNew(asPath) {
        return this.asPath !== asPath;
    }
    /**
   * Prefetch page code, you may wait for the data during page rendering.
   * This feature only works in production!
   * @param url the href of prefetched page
   * @param asPath the as path of the prefetched page
   */ async prefetch(url, asPath, options) {
        if (asPath === void 0) asPath = url;
        if (options === void 0) options = {};
        // Prefetch is not supported in development mode because it would trigger on-demand-entries
        if (process.env.NODE_ENV !== "production") {
            return;
        }
        if (typeof window !== "undefined" && isBot(window.navigator.userAgent)) {
            // No prefetches for bots that render the link since they are typically navigating
            // links via the equivalent of a hard navigation and hence never utilize these
            // prefetches.
            return;
        }
        let parsed = parseRelativeUrl(url);
        const urlPathname = parsed.pathname;
        let { pathname, query } = parsed;
        const originalPathname = pathname;
        if (process.env.__NEXT_I18N_SUPPORT) {
            if (options.locale === false) {
                pathname = normalizeLocalePath(pathname, this.locales).pathname;
                parsed.pathname = pathname;
                url = formatWithValidation(parsed);
                let parsedAs = parseRelativeUrl(asPath);
                const localePathResult = normalizeLocalePath(parsedAs.pathname, this.locales);
                parsedAs.pathname = localePathResult.pathname;
                options.locale = localePathResult.detectedLocale || this.defaultLocale;
                asPath = formatWithValidation(parsedAs);
            }
        }
        const pages = await this.pageLoader.getPageList();
        let resolvedAs = asPath;
        const locale = typeof options.locale !== "undefined" ? options.locale || undefined : this.locale;
        const isMiddlewareMatch = await matchesMiddleware({
            asPath: asPath,
            locale: locale,
            router: this
        });
        if (process.env.__NEXT_HAS_REWRITES && asPath.startsWith("/")) {
            let rewrites;
            ({ __rewrites: rewrites } = await getClientBuildManifest());
            const rewritesResult = resolveRewrites(addBasePath(addLocale(asPath, this.locale), true), pages, rewrites, parsed.query, (p)=>resolveDynamicRoute(p, pages), this.locales);
            if (rewritesResult.externalDest) {
                return;
            }
            if (!isMiddlewareMatch) {
                resolvedAs = removeLocale(removeBasePath(rewritesResult.asPath), this.locale);
            }
            if (rewritesResult.matchedPage && rewritesResult.resolvedHref) {
                // if this directly matches a page we need to update the href to
                // allow the correct page chunk to be loaded
                pathname = rewritesResult.resolvedHref;
                parsed.pathname = pathname;
                if (!isMiddlewareMatch) {
                    url = formatWithValidation(parsed);
                }
            }
        }
        parsed.pathname = resolveDynamicRoute(parsed.pathname, pages);
        if (isDynamicRoute(parsed.pathname)) {
            pathname = parsed.pathname;
            parsed.pathname = pathname;
            Object.assign(query, getRouteMatcher(getRouteRegex(parsed.pathname))(parsePath(asPath).pathname) || {});
            if (!isMiddlewareMatch) {
                url = formatWithValidation(parsed);
            }
        }
        const data = process.env.__NEXT_MIDDLEWARE_PREFETCH === "strict" ? null : await withMiddlewareEffects({
            fetchData: ()=>fetchNextData({
                    dataHref: this.pageLoader.getDataHref({
                        href: formatWithValidation({
                            pathname: originalPathname,
                            query
                        }),
                        skipInterpolation: true,
                        asPath: resolvedAs,
                        locale
                    }),
                    hasMiddleware: true,
                    isServerRender: false,
                    parseJSON: true,
                    inflightCache: this.sdc,
                    persistCache: !this.isPreview,
                    isPrefetch: true
                }),
            asPath: asPath,
            locale: locale,
            router: this
        });
        /**
     * If there was a rewrite we apply the effects of the rewrite on the
     * current parameters for the prefetch.
     */ if ((data == null ? void 0 : data.effect.type) === "rewrite") {
            parsed.pathname = data.effect.resolvedHref;
            pathname = data.effect.resolvedHref;
            query = {
                ...query,
                ...data.effect.parsedAs.query
            };
            resolvedAs = data.effect.parsedAs.pathname;
            url = formatWithValidation(parsed);
        }
        /**
     * If there is a redirect to an external destination then we don't have
     * to prefetch content as it will be unused.
     */ if ((data == null ? void 0 : data.effect.type) === "redirect-external") {
            return;
        }
        const route = removeTrailingSlash(pathname);
        if (await this._bfl(asPath, resolvedAs, options.locale, true)) {
            this.components[urlPathname] = {
                __appRouter: true
            };
        }
        await Promise.all([
            this.pageLoader._isSsg(route).then((isSsg)=>{
                return isSsg ? fetchNextData({
                    dataHref: (data == null ? void 0 : data.json) ? data == null ? void 0 : data.dataHref : this.pageLoader.getDataHref({
                        href: url,
                        asPath: resolvedAs,
                        locale: locale
                    }),
                    isServerRender: false,
                    parseJSON: true,
                    inflightCache: this.sdc,
                    persistCache: !this.isPreview,
                    isPrefetch: true,
                    unstable_skipClientCache: options.unstable_skipClientCache || options.priority && !!process.env.__NEXT_OPTIMISTIC_CLIENT_CACHE
                }).then(()=>false).catch(()=>false) : false;
            }),
            this.pageLoader[options.priority ? "loadPage" : "prefetch"](route)
        ]);
    }
    async fetchComponent(route) {
        const handleCancelled = getCancelledHandler({
            route,
            router: this
        });
        try {
            const componentResult = await this.pageLoader.loadPage(route);
            handleCancelled();
            return componentResult;
        } catch (err) {
            handleCancelled();
            throw err;
        }
    }
    _getData(fn) {
        let cancelled = false;
        const cancel = ()=>{
            cancelled = true;
        };
        this.clc = cancel;
        return fn().then((data)=>{
            if (cancel === this.clc) {
                this.clc = null;
            }
            if (cancelled) {
                const err = new Error("Loading initial props cancelled");
                err.cancelled = true;
                throw err;
            }
            return data;
        });
    }
    _getFlightData(dataHref) {
        // Do not cache RSC flight response since it's not a static resource
        return fetchNextData({
            dataHref,
            isServerRender: true,
            parseJSON: false,
            inflightCache: this.sdc,
            persistCache: false,
            isPrefetch: false
        }).then((param)=>{
            let { text } = param;
            return {
                data: text
            };
        });
    }
    getInitialProps(Component, ctx) {
        const { Component: App } = this.components["/_app"];
        const AppTree = this._wrapApp(App);
        ctx.AppTree = AppTree;
        return loadGetInitialProps(App, {
            AppTree,
            Component,
            router: this,
            ctx
        });
    }
    get route() {
        return this.state.route;
    }
    get pathname() {
        return this.state.pathname;
    }
    get query() {
        return this.state.query;
    }
    get asPath() {
        return this.state.asPath;
    }
    get locale() {
        return this.state.locale;
    }
    get isFallback() {
        return this.state.isFallback;
    }
    get isPreview() {
        return this.state.isPreview;
    }
    constructor(pathname, query, as, { initialProps, pageLoader, App, wrapApp, Component, err, subscription, isFallback, locale, locales, defaultLocale, domainLocales, isPreview }){
        // Server Data Cache (full data requests)
        this.sdc = {};
        // Server Background Cache (HEAD requests)
        this.sbc = {};
        this.isFirstPopStateEvent = true;
        this._key = createKey();
        this.onPopState = (e)=>{
            const { isFirstPopStateEvent } = this;
            this.isFirstPopStateEvent = false;
            const state = e.state;
            if (!state) {
                // We get state as undefined for two reasons.
                //  1. With older safari (< 8) and older chrome (< 34)
                //  2. When the URL changed with #
                //
                // In the both cases, we don't need to proceed and change the route.
                // (as it's already changed)
                // But we can simply replace the state with the new changes.
                // Actually, for (1) we don't need to nothing. But it's hard to detect that event.
                // So, doing the following for (1) does no harm.
                const { pathname, query } = this;
                this.changeState("replaceState", formatWithValidation({
                    pathname: addBasePath(pathname),
                    query
                }), getURL());
                return;
            }
            // __NA is used to identify if the history entry can be handled by the app-router.
            if (state.__NA) {
                window.location.reload();
                return;
            }
            if (!state.__N) {
                return;
            }
            // Safari fires popstateevent when reopening the browser.
            if (isFirstPopStateEvent && this.locale === state.options.locale && state.as === this.asPath) {
                return;
            }
            let forcedScroll;
            const { url, as, options, key } = state;
            if (process.env.__NEXT_SCROLL_RESTORATION) {
                if (manualScrollRestoration) {
                    if (this._key !== key) {
                        // Snapshot current scroll position:
                        try {
                            sessionStorage.setItem("__next_scroll_" + this._key, JSON.stringify({
                                x: self.pageXOffset,
                                y: self.pageYOffset
                            }));
                        } catch (e) {}
                        // Restore old scroll position:
                        try {
                            const v = sessionStorage.getItem("__next_scroll_" + key);
                            forcedScroll = JSON.parse(v);
                        } catch (e) {
                            forcedScroll = {
                                x: 0,
                                y: 0
                            };
                        }
                    }
                }
            }
            this._key = key;
            const { pathname } = parseRelativeUrl(url);
            // Make sure we don't re-render on initial load,
            // can be caused by navigating back from an external site
            if (this.isSsr && as === addBasePath(this.asPath) && pathname === addBasePath(this.pathname)) {
                return;
            }
            // If the downstream application returns falsy, return.
            // They will then be responsible for handling the event.
            if (this._bps && !this._bps(state)) {
                return;
            }
            this.change("replaceState", url, as, Object.assign({}, options, {
                shallow: options.shallow && this._shallow,
                locale: options.locale || this.defaultLocale,
                // @ts-ignore internal value not exposed on types
                _h: 0
            }), forcedScroll);
        };
        // represents the current component key
        const route = removeTrailingSlash(pathname);
        // set up the component cache (by route keys)
        this.components = {};
        // We should not keep the cache, if there's an error
        // Otherwise, this cause issues when when going back and
        // come again to the errored page.
        if (pathname !== "/_error") {
            this.components[route] = {
                Component,
                initial: true,
                props: initialProps,
                err,
                __N_SSG: initialProps && initialProps.__N_SSG,
                __N_SSP: initialProps && initialProps.__N_SSP
            };
        }
        this.components["/_app"] = {
            Component: App,
            styleSheets: []
        };
        if (process.env.__NEXT_CLIENT_ROUTER_FILTER_ENABLED) {
            const { BloomFilter } = require("../../lib/bloom-filter");
            const routerFilterSValue = process.env.__NEXT_CLIENT_ROUTER_S_FILTER;
            const staticFilterData = routerFilterSValue ? routerFilterSValue : undefined;
            const routerFilterDValue = process.env.__NEXT_CLIENT_ROUTER_D_FILTER;
            const dynamicFilterData = routerFilterDValue ? routerFilterDValue : undefined;
            if (staticFilterData == null ? void 0 : staticFilterData.numHashes) {
                this._bfl_s = new BloomFilter(staticFilterData.numItems, staticFilterData.errorRate);
                this._bfl_s.import(staticFilterData);
            }
            if (dynamicFilterData == null ? void 0 : dynamicFilterData.numHashes) {
                this._bfl_d = new BloomFilter(dynamicFilterData.numItems, dynamicFilterData.errorRate);
                this._bfl_d.import(dynamicFilterData);
            }
        }
        // Backwards compat for Router.router.events
        // TODO: Should be remove the following major version as it was never documented
        this.events = Router.events;
        this.pageLoader = pageLoader;
        // if auto prerendered and dynamic route wait to update asPath
        // until after mount to prevent hydration mismatch
        const autoExportDynamic = isDynamicRoute(pathname) && self.__NEXT_DATA__.autoExport;
        this.basePath = process.env.__NEXT_ROUTER_BASEPATH || "";
        this.sub = subscription;
        this.clc = null;
        this._wrapApp = wrapApp;
        // make sure to ignore extra popState in safari on navigating
        // back from external site
        this.isSsr = true;
        this.isLocaleDomain = false;
        this.isReady = !!(self.__NEXT_DATA__.gssp || self.__NEXT_DATA__.gip || self.__NEXT_DATA__.isExperimentalCompile || self.__NEXT_DATA__.appGip && !self.__NEXT_DATA__.gsp || !autoExportDynamic && !self.location.search && !process.env.__NEXT_HAS_REWRITES);
        if (process.env.__NEXT_I18N_SUPPORT) {
            this.locales = locales;
            this.defaultLocale = defaultLocale;
            this.domainLocales = domainLocales;
            this.isLocaleDomain = !!detectDomainLocale(domainLocales, self.location.hostname);
        }
        this.state = {
            route,
            pathname,
            query,
            asPath: autoExportDynamic ? pathname : as,
            isPreview: !!isPreview,
            locale: process.env.__NEXT_I18N_SUPPORT ? locale : undefined,
            isFallback
        };
        this._initialMatchesMiddlewarePromise = Promise.resolve(false);
        if (typeof window !== "undefined") {
            // make sure "as" doesn't start with double slashes or else it can
            // throw an error as it's considered invalid
            if (!as.startsWith("//")) {
                // in order for `e.state` to work on the `onpopstate` event
                // we have to register the initial route upon initialization
                const options = {
                    locale
                };
                const asPath = getURL();
                this._initialMatchesMiddlewarePromise = matchesMiddleware({
                    router: this,
                    locale,
                    asPath
                }).then((matches)=>{
                    options._shouldResolveHref = as !== pathname;
                    this.changeState("replaceState", matches ? asPath : formatWithValidation({
                        pathname: addBasePath(pathname),
                        query
                    }), asPath, options);
                    return matches;
                });
            }
            window.addEventListener("popstate", this.onPopState);
            // enable custom scroll restoration handling when available
            // otherwise fallback to browser's default handling
            if (process.env.__NEXT_SCROLL_RESTORATION) {
                if (manualScrollRestoration) {
                    window.history.scrollRestoration = "manual";
                }
            }
        }
    }
}
Router.events = mitt();
export { Router as default };

//# sourceMappingURL=router.js.map