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import React from 'react';
import { DynamicServerError } from '../../client/components/hooks-server-context';
import { StaticGenBailoutError } from '../../client/components/static-generation-bailout';
import { getPathname } from '../../lib/url';
const hasPostpone = typeof React.unstable_postpone === 'function';
export function createPrerenderState(isDebugSkeleton) {
return {
isDebugSkeleton,
dynamicAccesses: []
};
}
export function markCurrentScopeAsDynamic(store, expression) {
const pathname = getPathname(store.urlPathname);
if (store.isUnstableCacheCallback) {
return;
} else if (store.dynamicShouldError) {
throw new StaticGenBailoutError(`Route ${pathname} with \`dynamic = "error"\` couldn't be rendered statically because it used \`${expression}\`. See more info here: https://nextjs.org/docs/app/building-your-application/rendering/static-and-dynamic#dynamic-rendering`);
} else if (store.prerenderState) {
postponeWithTracking(store.prerenderState, expression, pathname);
} else {
store.revalidate = 0;
if (store.isStaticGeneration) {
const err = new DynamicServerError(`Route ${pathname} couldn't be rendered statically because it used ${expression}. See more info here: https://nextjs.org/docs/messages/dynamic-server-error`);
store.dynamicUsageDescription = expression;
store.dynamicUsageStack = err.stack;
throw err;
}
}
}
export function trackDynamicDataAccessed(store, expression) {
const pathname = getPathname(store.urlPathname);
if (store.isUnstableCacheCallback) {
throw new Error(`Route ${pathname} used "${expression}" 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 "${expression}" 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`);
} else if (store.dynamicShouldError) {
throw new StaticGenBailoutError(`Route ${pathname} with \`dynamic = "error"\` couldn't be rendered statically because it used \`${expression}\`. See more info here: https://nextjs.org/docs/app/building-your-application/rendering/static-and-dynamic#dynamic-rendering`);
} else if (store.prerenderState) {
postponeWithTracking(store.prerenderState, expression, pathname);
} else {
store.revalidate = 0;
if (store.isStaticGeneration) {
const err = new DynamicServerError(`Route ${pathname} couldn't be rendered statically because it used ${expression}. See more info here: https://nextjs.org/docs/messages/dynamic-server-error`);
store.dynamicUsageDescription = expression;
store.dynamicUsageStack = err.stack;
throw err;
}
}
}
export function Postpone({ reason, prerenderState, pathname }) {
postponeWithTracking(prerenderState, reason, pathname);
}
export function trackDynamicFetch(store, expression) {
if (!store.prerenderState || store.isUnstableCacheCallback) return;
postponeWithTracking(store.prerenderState, expression, store.urlPathname);
}
function postponeWithTracking(prerenderState, expression, pathname) {
assertPostpone();
const reason = `Route ${pathname} needs to bail out of prerendering at this point because it used ${expression}. ` + `React throws this special object to indicate where. It should not be caught by ` + `your own try/catch. Learn more: https://nextjs.org/docs/messages/ppr-caught-error`;
prerenderState.dynamicAccesses.push({
stack: prerenderState.isDebugSkeleton ? new Error().stack : undefined,
expression
});
React.unstable_postpone(reason);
}
export function usedDynamicAPIs(prerenderState) {
return prerenderState.dynamicAccesses.length > 0;
}
export function formatDynamicAPIAccesses(prerenderState) {
return prerenderState.dynamicAccesses.filter((access)=>typeof access.stack === 'string' && access.stack.length > 0).map(({ expression, stack })=>{
stack = stack.split('\n').slice(4).filter((line)=>{
if (line.includes('node_modules/next/')) {
return false;
}
if (line.includes(' (<anonymous>)')) {
return false;
}
if (line.includes(' (node:')) {
return false;
}
return true;
}).join('\n');
return `Dynamic API Usage Debug - ${expression}:\n${stack}`;
});
}
function assertPostpone() {
if (!hasPostpone) {
throw new Error(`Invariant: React.unstable_postpone is not defined. This suggests the wrong version of React was loaded. This is a bug in Next.js`);
}
}
export function createPostponedAbortSignal(reason) {
assertPostpone();
const controller = new AbortController();
try {
React.unstable_postpone(reason);
} catch (x) {
controller.abort(x);
}
return controller.signal;
}