next
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The React Framework
274 lines (273 loc) • 13.2 kB
JavaScript
import { format as formatUrl, parse as parseUrl } from 'url';
import { normalizeLocalePath } from '../shared/lib/i18n/normalize-locale-path';
import { getPathMatch } from '../shared/lib/router/utils/path-match';
import { getNamedRouteRegex } from '../shared/lib/router/utils/route-regex';
import { getRouteMatcher } from '../shared/lib/router/utils/route-matcher';
import { matchHas, prepareDestination } from '../shared/lib/router/utils/prepare-destination';
import { removeTrailingSlash } from '../shared/lib/router/utils/remove-trailing-slash';
import { normalizeRscURL } from '../shared/lib/router/utils/app-paths';
import { NEXT_INTERCEPTION_MARKER_PREFIX, NEXT_QUERY_PARAM_PREFIX } from '../lib/constants';
export function normalizeVercelUrl(req, trustQuery, paramKeys, pageIsDynamic, defaultRouteRegex) {
// make sure to normalize req.url on Vercel to strip dynamic params
// from the query which are added during routing
if (pageIsDynamic && trustQuery && defaultRouteRegex) {
const _parsedUrl = parseUrl(req.url, true);
delete _parsedUrl.search;
for (const key of Object.keys(_parsedUrl.query)){
const isNextQueryPrefix = key !== NEXT_QUERY_PARAM_PREFIX && key.startsWith(NEXT_QUERY_PARAM_PREFIX);
const isNextInterceptionMarkerPrefix = key !== NEXT_INTERCEPTION_MARKER_PREFIX && key.startsWith(NEXT_INTERCEPTION_MARKER_PREFIX);
if (isNextQueryPrefix || isNextInterceptionMarkerPrefix || (paramKeys || Object.keys(defaultRouteRegex.groups)).includes(key)) {
delete _parsedUrl.query[key];
}
}
req.url = formatUrl(_parsedUrl);
}
}
export function interpolateDynamicPath(pathname, params, defaultRouteRegex) {
if (!defaultRouteRegex) return pathname;
for (const param of Object.keys(defaultRouteRegex.groups)){
const { optional, repeat } = defaultRouteRegex.groups[param];
let builtParam = `[${repeat ? '...' : ''}${param}]`;
if (optional) {
builtParam = `[${builtParam}]`;
}
let paramValue;
const value = params[param];
if (Array.isArray(value)) {
paramValue = value.map((v)=>v && encodeURIComponent(v)).join('/');
} else if (value) {
paramValue = encodeURIComponent(value);
} else {
paramValue = '';
}
pathname = pathname.replaceAll(builtParam, paramValue);
}
return pathname;
}
export function normalizeDynamicRouteParams(params, ignoreOptional, defaultRouteRegex, defaultRouteMatches) {
let hasValidParams = true;
if (!defaultRouteRegex) return {
params,
hasValidParams: false
};
params = Object.keys(defaultRouteRegex.groups).reduce((prev, key)=>{
let value = params[key];
if (typeof value === 'string') {
value = normalizeRscURL(value);
}
if (Array.isArray(value)) {
value = value.map((val)=>{
if (typeof val === 'string') {
val = normalizeRscURL(val);
}
return val;
});
}
// if the value matches the default value we can't rely
// on the parsed params, this is used to signal if we need
// to parse x-now-route-matches or not
const defaultValue = defaultRouteMatches[key];
const isOptional = defaultRouteRegex.groups[key].optional;
const isDefaultValue = Array.isArray(defaultValue) ? defaultValue.some((defaultVal)=>{
return Array.isArray(value) ? value.some((val)=>val.includes(defaultVal)) : value == null ? void 0 : value.includes(defaultVal);
}) : value == null ? void 0 : value.includes(defaultValue);
if (isDefaultValue || typeof value === 'undefined' && !(isOptional && ignoreOptional)) {
hasValidParams = false;
}
// non-provided optional values should be undefined so normalize
// them to undefined
if (isOptional && (!value || Array.isArray(value) && value.length === 1 && // fallback optional catch-all SSG pages have
// [[...paramName]] for the root path on Vercel
(value[0] === 'index' || value[0] === `[[...${key}]]`))) {
value = undefined;
delete params[key];
}
// query values from the proxy aren't already split into arrays
// so make sure to normalize catch-all values
if (value && typeof value === 'string' && defaultRouteRegex.groups[key].repeat) {
value = value.split('/');
}
if (value) {
prev[key] = value;
}
return prev;
}, {});
return {
params,
hasValidParams
};
}
export function getUtils({ page, i18n, basePath, rewrites, pageIsDynamic, trailingSlash, caseSensitive }) {
let defaultRouteRegex;
let dynamicRouteMatcher;
let defaultRouteMatches;
if (pageIsDynamic) {
defaultRouteRegex = getNamedRouteRegex(page, false);
dynamicRouteMatcher = getRouteMatcher(defaultRouteRegex);
defaultRouteMatches = dynamicRouteMatcher(page);
}
function handleRewrites(req, parsedUrl) {
const rewriteParams = {};
let fsPathname = parsedUrl.pathname;
const matchesPage = ()=>{
const fsPathnameNoSlash = removeTrailingSlash(fsPathname || '');
return fsPathnameNoSlash === removeTrailingSlash(page) || (dynamicRouteMatcher == null ? void 0 : dynamicRouteMatcher(fsPathnameNoSlash));
};
const checkRewrite = (rewrite)=>{
const matcher = getPathMatch(rewrite.source + (trailingSlash ? '(/)?' : ''), {
removeUnnamedParams: true,
strict: true,
sensitive: !!caseSensitive
});
let params = matcher(parsedUrl.pathname);
if ((rewrite.has || rewrite.missing) && params) {
const hasParams = matchHas(req, parsedUrl.query, rewrite.has, rewrite.missing);
if (hasParams) {
Object.assign(params, hasParams);
} else {
params = false;
}
}
if (params) {
const { parsedDestination, destQuery } = prepareDestination({
appendParamsToQuery: true,
destination: rewrite.destination,
params: params,
query: parsedUrl.query
});
// if the rewrite destination is external break rewrite chain
if (parsedDestination.protocol) {
return true;
}
Object.assign(rewriteParams, destQuery, params);
Object.assign(parsedUrl.query, parsedDestination.query);
delete parsedDestination.query;
Object.assign(parsedUrl, parsedDestination);
fsPathname = parsedUrl.pathname;
if (basePath) {
fsPathname = fsPathname.replace(new RegExp(`^${basePath}`), '') || '/';
}
if (i18n) {
const destLocalePathResult = normalizeLocalePath(fsPathname, i18n.locales);
fsPathname = destLocalePathResult.pathname;
parsedUrl.query.nextInternalLocale = destLocalePathResult.detectedLocale || params.nextInternalLocale;
}
if (fsPathname === page) {
return true;
}
if (pageIsDynamic && dynamicRouteMatcher) {
const dynamicParams = dynamicRouteMatcher(fsPathname);
if (dynamicParams) {
parsedUrl.query = {
...parsedUrl.query,
...dynamicParams
};
return true;
}
}
}
return false;
};
for (const rewrite of rewrites.beforeFiles || []){
checkRewrite(rewrite);
}
if (fsPathname !== page) {
let finished = false;
for (const rewrite of rewrites.afterFiles || []){
finished = checkRewrite(rewrite);
if (finished) break;
}
if (!finished && !matchesPage()) {
for (const rewrite of rewrites.fallback || []){
finished = checkRewrite(rewrite);
if (finished) break;
}
}
}
return rewriteParams;
}
function getParamsFromRouteMatches(req, renderOpts, detectedLocale) {
return getRouteMatcher(function() {
const { groups, routeKeys } = defaultRouteRegex;
return {
re: {
// Simulate a RegExp match from the \`req.url\` input
exec: (str)=>{
const obj = Object.fromEntries(new URLSearchParams(str));
const matchesHasLocale = i18n && detectedLocale && obj['1'] === detectedLocale;
for (const key of Object.keys(obj)){
const value = obj[key];
if (key !== NEXT_QUERY_PARAM_PREFIX && key.startsWith(NEXT_QUERY_PARAM_PREFIX)) {
const normalizedKey = key.substring(NEXT_QUERY_PARAM_PREFIX.length);
obj[normalizedKey] = value;
delete obj[key];
}
}
// favor named matches if available
const routeKeyNames = Object.keys(routeKeys || {});
const filterLocaleItem = (val)=>{
if (i18n) {
// locale items can be included in route-matches
// for fallback SSG pages so ensure they are
// filtered
const isCatchAll = Array.isArray(val);
const _val = isCatchAll ? val[0] : val;
if (typeof _val === 'string' && i18n.locales.some((item)=>{
if (item.toLowerCase() === _val.toLowerCase()) {
detectedLocale = item;
renderOpts.locale = detectedLocale;
return true;
}
return false;
})) {
// remove the locale item from the match
if (isCatchAll) {
;
val.splice(0, 1);
}
// the value is only a locale item and
// shouldn't be added
return isCatchAll ? val.length === 0 : true;
}
}
return false;
};
if (routeKeyNames.every((name)=>obj[name])) {
return routeKeyNames.reduce((prev, keyName)=>{
const paramName = routeKeys == null ? void 0 : routeKeys[keyName];
if (paramName && !filterLocaleItem(obj[keyName])) {
prev[groups[paramName].pos] = obj[keyName];
}
return prev;
}, {});
}
return Object.keys(obj).reduce((prev, key)=>{
if (!filterLocaleItem(obj[key])) {
let normalizedKey = key;
if (matchesHasLocale) {
normalizedKey = parseInt(key, 10) - 1 + '';
}
return Object.assign(prev, {
[normalizedKey]: obj[key]
});
}
return prev;
}, {});
}
},
groups
};
}())(req.headers['x-now-route-matches']);
}
return {
handleRewrites,
defaultRouteRegex,
dynamicRouteMatcher,
defaultRouteMatches,
getParamsFromRouteMatches,
normalizeDynamicRouteParams: (params, ignoreOptional)=>normalizeDynamicRouteParams(params, ignoreOptional, defaultRouteRegex, defaultRouteMatches),
normalizeVercelUrl: (req, trustQuery, paramKeys)=>normalizeVercelUrl(req, trustQuery, paramKeys, pageIsDynamic, defaultRouteRegex),
interpolateDynamicPath: (pathname, params)=>interpolateDynamicPath(pathname, params, defaultRouteRegex)
};
}
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