334 lines
16 KiB
JavaScript
334 lines
16 KiB
JavaScript
import { HeadersAdapter } from '../web/spec-extension/adapters/headers';
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import { workAsyncStorage } from '../app-render/work-async-storage.external';
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import { getExpectedRequestStore } from '../app-render/work-unit-async-storage.external';
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import { workUnitAsyncStorage } from '../app-render/work-unit-async-storage.external';
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import { postponeWithTracking, abortAndThrowOnSynchronousRequestDataAccess, throwToInterruptStaticGeneration, trackDynamicDataInDynamicRender, trackSynchronousRequestDataAccessInDev } from '../app-render/dynamic-rendering';
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import { StaticGenBailoutError } from '../../client/components/static-generation-bailout';
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import { makeHangingPromise } from '../dynamic-rendering-utils';
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import { createDedupedByCallsiteServerErrorLoggerDev } from '../create-deduped-by-callsite-server-error-logger';
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import { scheduleImmediate } from '../../lib/scheduler';
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import { isRequestAPICallableInsideAfter } from './utils';
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/**
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* This function allows you to read the HTTP incoming request headers in
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* [Server Components](https://nextjs.org/docs/app/building-your-application/rendering/server-components),
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* [Server Actions](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations),
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* [Route Handlers](https://nextjs.org/docs/app/building-your-application/routing/route-handlers) and
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* [Middleware](https://nextjs.org/docs/app/building-your-application/routing/middleware).
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*
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* Read more: [Next.js Docs: `headers`](https://nextjs.org/docs/app/api-reference/functions/headers)
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*/ export function headers() {
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const workStore = workAsyncStorage.getStore();
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const workUnitStore = workUnitAsyncStorage.getStore();
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if (workStore) {
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if (workUnitStore && workUnitStore.phase === 'after' && !isRequestAPICallableInsideAfter()) {
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throw Object.defineProperty(new Error(`Route ${workStore.route} used "headers" inside "after(...)". This is not supported. If you need this data inside an "after" callback, use "headers" outside of the callback. See more info here: https://nextjs.org/docs/canary/app/api-reference/functions/after`), "__NEXT_ERROR_CODE", {
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value: "E367",
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enumerable: false,
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configurable: true
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});
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}
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if (workStore.forceStatic) {
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// When using forceStatic we override all other logic and always just return an empty
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// headers object without tracking
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const underlyingHeaders = HeadersAdapter.seal(new Headers({}));
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return makeUntrackedExoticHeaders(underlyingHeaders);
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}
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if (workUnitStore) {
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if (workUnitStore.type === 'cache') {
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throw Object.defineProperty(new Error(`Route ${workStore.route} used "headers" inside "use cache". Accessing Dynamic data sources inside a cache scope is not supported. If you need this data inside a cached function use "headers" outside of the cached function and pass the required dynamic data in as an argument. See more info here: https://nextjs.org/docs/messages/next-request-in-use-cache`), "__NEXT_ERROR_CODE", {
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value: "E304",
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enumerable: false,
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configurable: true
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});
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} else if (workUnitStore.type === 'unstable-cache') {
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throw Object.defineProperty(new Error(`Route ${workStore.route} used "headers" inside a function cached with "unstable_cache(...)". Accessing Dynamic data sources inside a cache scope is not supported. If you need this data inside a cached function use "headers" outside of the cached function and pass the required dynamic data in as an argument. See more info here: https://nextjs.org/docs/app/api-reference/functions/unstable_cache`), "__NEXT_ERROR_CODE", {
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value: "E127",
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enumerable: false,
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configurable: true
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});
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}
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}
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if (workStore.dynamicShouldError) {
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throw Object.defineProperty(new StaticGenBailoutError(`Route ${workStore.route} with \`dynamic = "error"\` couldn't be rendered statically because it used \`headers\`. See more info here: https://nextjs.org/docs/app/building-your-application/rendering/static-and-dynamic#dynamic-rendering`), "__NEXT_ERROR_CODE", {
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value: "E525",
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enumerable: false,
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configurable: true
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});
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}
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if (workUnitStore) {
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if (workUnitStore.type === 'prerender') {
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// dynamicIO Prerender
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// We don't track dynamic access here because access will be tracked when you access
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// one of the properties of the headers object.
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return makeDynamicallyTrackedExoticHeaders(workStore.route, workUnitStore);
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} else if (workUnitStore.type === 'prerender-ppr') {
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// PPR Prerender (no dynamicIO)
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// We are prerendering with PPR. We need track dynamic access here eagerly
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// to keep continuity with how headers has worked in PPR without dynamicIO.
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// TODO consider switching the semantic to throw on property access instead
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postponeWithTracking(workStore.route, 'headers', workUnitStore.dynamicTracking);
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} else if (workUnitStore.type === 'prerender-legacy') {
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// Legacy Prerender
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// We are in a legacy static generation mode while prerendering
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// We track dynamic access here so we don't need to wrap the headers in
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// individual property access tracking.
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throwToInterruptStaticGeneration('headers', workStore, workUnitStore);
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}
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}
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// We fall through to the dynamic context below but we still track dynamic access
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// because in dev we can still error for things like using headers inside a cache context
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trackDynamicDataInDynamicRender(workStore, workUnitStore);
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}
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const requestStore = getExpectedRequestStore('headers');
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if (process.env.NODE_ENV === 'development' && !(workStore == null ? void 0 : workStore.isPrefetchRequest)) {
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return makeUntrackedExoticHeadersWithDevWarnings(requestStore.headers, workStore == null ? void 0 : workStore.route);
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} else {
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return makeUntrackedExoticHeaders(requestStore.headers);
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}
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}
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const CachedHeaders = new WeakMap();
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function makeDynamicallyTrackedExoticHeaders(route, prerenderStore) {
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const cachedHeaders = CachedHeaders.get(prerenderStore);
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if (cachedHeaders) {
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return cachedHeaders;
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}
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const promise = makeHangingPromise(prerenderStore.renderSignal, '`headers()`');
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CachedHeaders.set(prerenderStore, promise);
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Object.defineProperties(promise, {
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append: {
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value: function append() {
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const expression = `\`headers().append(${describeNameArg(arguments[0])}, ...)\``;
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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delete: {
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value: function _delete() {
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const expression = `\`headers().delete(${describeNameArg(arguments[0])})\``;
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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get: {
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value: function get() {
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const expression = `\`headers().get(${describeNameArg(arguments[0])})\``;
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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has: {
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value: function has() {
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const expression = `\`headers().has(${describeNameArg(arguments[0])})\``;
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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set: {
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value: function set() {
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const expression = `\`headers().set(${describeNameArg(arguments[0])}, ...)\``;
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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getSetCookie: {
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value: function getSetCookie() {
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const expression = '`headers().getSetCookie()`';
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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forEach: {
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value: function forEach() {
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const expression = '`headers().forEach(...)`';
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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keys: {
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value: function keys() {
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const expression = '`headers().keys()`';
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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values: {
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value: function values() {
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const expression = '`headers().values()`';
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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entries: {
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value: function entries() {
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const expression = '`headers().entries()`';
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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},
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[Symbol.iterator]: {
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value: function() {
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const expression = '`headers()[Symbol.iterator]()`';
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const error = createHeadersAccessError(route, expression);
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abortAndThrowOnSynchronousRequestDataAccess(route, expression, error, prerenderStore);
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}
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}
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});
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return promise;
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}
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function makeUntrackedExoticHeaders(underlyingHeaders) {
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const cachedHeaders = CachedHeaders.get(underlyingHeaders);
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if (cachedHeaders) {
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return cachedHeaders;
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}
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const promise = Promise.resolve(underlyingHeaders);
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CachedHeaders.set(underlyingHeaders, promise);
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Object.defineProperties(promise, {
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append: {
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value: underlyingHeaders.append.bind(underlyingHeaders)
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},
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delete: {
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value: underlyingHeaders.delete.bind(underlyingHeaders)
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},
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get: {
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value: underlyingHeaders.get.bind(underlyingHeaders)
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},
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has: {
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value: underlyingHeaders.has.bind(underlyingHeaders)
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},
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set: {
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value: underlyingHeaders.set.bind(underlyingHeaders)
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},
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getSetCookie: {
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value: underlyingHeaders.getSetCookie.bind(underlyingHeaders)
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},
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forEach: {
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value: underlyingHeaders.forEach.bind(underlyingHeaders)
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},
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keys: {
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value: underlyingHeaders.keys.bind(underlyingHeaders)
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},
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values: {
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value: underlyingHeaders.values.bind(underlyingHeaders)
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},
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entries: {
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value: underlyingHeaders.entries.bind(underlyingHeaders)
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},
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[Symbol.iterator]: {
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value: underlyingHeaders[Symbol.iterator].bind(underlyingHeaders)
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}
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});
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return promise;
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}
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function makeUntrackedExoticHeadersWithDevWarnings(underlyingHeaders, route) {
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const cachedHeaders = CachedHeaders.get(underlyingHeaders);
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if (cachedHeaders) {
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return cachedHeaders;
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}
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const promise = new Promise((resolve)=>scheduleImmediate(()=>resolve(underlyingHeaders)));
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CachedHeaders.set(underlyingHeaders, promise);
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Object.defineProperties(promise, {
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append: {
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value: function append() {
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const expression = `\`headers().append(${describeNameArg(arguments[0])}, ...)\``;
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syncIODev(route, expression);
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return underlyingHeaders.append.apply(underlyingHeaders, arguments);
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}
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},
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delete: {
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value: function _delete() {
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const expression = `\`headers().delete(${describeNameArg(arguments[0])})\``;
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syncIODev(route, expression);
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return underlyingHeaders.delete.apply(underlyingHeaders, arguments);
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}
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},
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get: {
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value: function get() {
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const expression = `\`headers().get(${describeNameArg(arguments[0])})\``;
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syncIODev(route, expression);
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return underlyingHeaders.get.apply(underlyingHeaders, arguments);
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}
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},
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has: {
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value: function has() {
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const expression = `\`headers().has(${describeNameArg(arguments[0])})\``;
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syncIODev(route, expression);
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return underlyingHeaders.has.apply(underlyingHeaders, arguments);
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}
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},
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set: {
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value: function set() {
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const expression = `\`headers().set(${describeNameArg(arguments[0])}, ...)\``;
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syncIODev(route, expression);
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return underlyingHeaders.set.apply(underlyingHeaders, arguments);
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}
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},
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getSetCookie: {
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value: function getSetCookie() {
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const expression = '`headers().getSetCookie()`';
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syncIODev(route, expression);
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return underlyingHeaders.getSetCookie.apply(underlyingHeaders, arguments);
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}
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},
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forEach: {
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value: function forEach() {
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const expression = '`headers().forEach(...)`';
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syncIODev(route, expression);
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return underlyingHeaders.forEach.apply(underlyingHeaders, arguments);
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}
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},
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keys: {
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value: function keys() {
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const expression = '`headers().keys()`';
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syncIODev(route, expression);
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return underlyingHeaders.keys.apply(underlyingHeaders, arguments);
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}
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},
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values: {
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value: function values() {
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const expression = '`headers().values()`';
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syncIODev(route, expression);
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return underlyingHeaders.values.apply(underlyingHeaders, arguments);
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}
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},
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entries: {
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value: function entries() {
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const expression = '`headers().entries()`';
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syncIODev(route, expression);
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return underlyingHeaders.entries.apply(underlyingHeaders, arguments);
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}
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},
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[Symbol.iterator]: {
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value: function() {
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const expression = '`...headers()` or similar iteration';
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syncIODev(route, expression);
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return underlyingHeaders[Symbol.iterator].apply(underlyingHeaders, arguments);
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}
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}
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});
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return promise;
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}
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function describeNameArg(arg) {
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return typeof arg === 'string' ? `'${arg}'` : '...';
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}
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function syncIODev(route, expression) {
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const workUnitStore = workUnitAsyncStorage.getStore();
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if (workUnitStore && workUnitStore.type === 'request' && workUnitStore.prerenderPhase === true) {
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// When we're rendering dynamically in dev we need to advance out of the
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// Prerender environment when we read Request data synchronously
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const requestStore = workUnitStore;
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trackSynchronousRequestDataAccessInDev(requestStore);
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}
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// In all cases we warn normally
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warnForSyncAccess(route, expression);
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}
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const warnForSyncAccess = createDedupedByCallsiteServerErrorLoggerDev(createHeadersAccessError);
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function createHeadersAccessError(route, expression) {
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const prefix = route ? `Route "${route}" ` : 'This route ';
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return Object.defineProperty(new Error(`${prefix}used ${expression}. ` + `\`headers()\` should be awaited before using its value. ` + `Learn more: https://nextjs.org/docs/messages/sync-dynamic-apis`), "__NEXT_ERROR_CODE", {
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value: "E277",
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enumerable: false,
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configurable: true
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});
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}
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//# sourceMappingURL=headers.js.map
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