Initial commit

node_modules/next/dist/esm/server/lib/cache-handlers/default.js

@@ -0,0 +1,107 @@
+/**
+ * This is the default "use cache" handler it defaults to an in-memory store.
+ * In-memory caches are fragile and should not use stale-while-revalidate
+ * semantics on the caches because it's not worth warming up an entry that's
+ * likely going to get evicted before we get to use it anyway. However, we also
+ * don't want to reuse a stale entry for too long so stale entries should be
+ * considered expired/missing in such cache handlers.
+ */ import { LRUCache } from '../lru-cache';
+import { isStale, tagsManifest } from '../incremental-cache/tags-manifest.external';
+// LRU cache default to max 50 MB but in future track
+const memoryCache = new LRUCache(50 * 1024 * 1024, (entry)=>entry.size);
+const pendingSets = new Map();
+const debug = process.env.NEXT_PRIVATE_DEBUG_CACHE ? console.debug.bind(console, 'DefaultCacheHandler:') : undefined;
+const DefaultCacheHandler = {
+    async get (cacheKey) {
+        const pendingPromise = pendingSets.get(cacheKey);
+        if (pendingPromise) {
+            debug == null ? void 0 : debug('get', cacheKey, 'pending');
+            await pendingPromise;
+        }
+        const privateEntry = memoryCache.get(cacheKey);
+        if (!privateEntry) {
+            debug == null ? void 0 : debug('get', cacheKey, 'not found');
+            return undefined;
+        }
+        const entry = privateEntry.entry;
+        if (performance.timeOrigin + performance.now() > entry.timestamp + entry.revalidate * 1000) {
+            // In-memory caches should expire after revalidate time because it is
+            // unlikely that a new entry will be able to be used before it is dropped
+            // from the cache.
+            debug == null ? void 0 : debug('get', cacheKey, 'expired');
+            return undefined;
+        }
+        if (isStale(entry.tags, entry.timestamp)) {
+            debug == null ? void 0 : debug('get', cacheKey, 'had stale tag');
+            return undefined;
+        }
+        const [returnStream, newSaved] = entry.value.tee();
+        entry.value = newSaved;
+        debug == null ? void 0 : debug('get', cacheKey, 'found', {
+            tags: entry.tags,
+            timestamp: entry.timestamp,
+            revalidate: entry.revalidate,
+            expire: entry.expire
+        });
+        return {
+            ...entry,
+            value: returnStream
+        };
+    },
+    async set (cacheKey, pendingEntry) {
+        debug == null ? void 0 : debug('set', cacheKey, 'start');
+        let resolvePending = ()=>{};
+        const pendingPromise = new Promise((resolve)=>{
+            resolvePending = resolve;
+        });
+        pendingSets.set(cacheKey, pendingPromise);
+        const entry = await pendingEntry;
+        let size = 0;
+        try {
+            const [value, clonedValue] = entry.value.tee();
+            entry.value = value;
+            const reader = clonedValue.getReader();
+            for(let chunk; !(chunk = await reader.read()).done;){
+                size += Buffer.from(chunk.value).byteLength;
+            }
+            memoryCache.set(cacheKey, {
+                entry,
+                isErrored: false,
+                errorRetryCount: 0,
+                size
+            });
+            debug == null ? void 0 : debug('set', cacheKey, 'done');
+        } catch (err) {
+            // TODO: store partial buffer with error after we retry 3 times
+            debug == null ? void 0 : debug('set', cacheKey, 'failed', err);
+        } finally{
+            resolvePending();
+            pendingSets.delete(cacheKey);
+        }
+    },
+    async refreshTags () {
+    // Nothing to do for an in-memory cache handler.
+    },
+    async getExpiration (...tags) {
+        const expiration = Math.max(...tags.map((tag)=>tagsManifest.get(tag) ?? 0));
+        debug == null ? void 0 : debug('getExpiration', {
+            tags,
+            expiration
+        });
+        return expiration;
+    },
+    async expireTags (...tags) {
+        const timestamp = Math.round(performance.timeOrigin + performance.now());
+        debug == null ? void 0 : debug('expireTags', {
+            tags,
+            timestamp
+        });
+        for (const tag of tags){
+            // TODO: update file-system-cache?
+            tagsManifest.set(tag, timestamp);
+        }
+    }
+};
+export default DefaultCacheHandler;
+
+//# sourceMappingURL=default.js.map

node_modules/next/dist/esm/server/lib/cache-handlers/types.js

@@ -0,0 +1,12 @@
+/**
+ * A timestamp in milliseconds elapsed since the epoch
+ */ /**
+ * This is a compatibility type to ease migration between cache handler
+ * versions. Until the old `CacheHandler` type is removed, this type should be
+ * used for all internal Next.js functions that deal with cache handlers to
+ * ensure that we are compatible with both cache handler versions. An exception
+ * is the built-in default cache handler, which implements the
+ * {@link CacheHandlerV2} interface.
+ */ export { };
+
+//# sourceMappingURL=types.js.map

node_modules/next/dist/esm/server/lib/cache-handlers/types.js.map

@@ -0,0 +1 @@
+{"version":3,"sources":["../../../../src/server/lib/cache-handlers/types.ts"],"sourcesContent":["/**\n * A timestamp in milliseconds elapsed since the epoch\n */\nexport type Timestamp = number\n\nexport interface CacheEntry {\n  /**\n   * The ReadableStream can error and only have partial data so any cache\n   * handlers need to handle this case and decide to keep the partial cache\n   * around or not.\n   */\n  value: ReadableStream<Uint8Array>\n\n  /**\n   * The tags configured for the entry excluding soft tags\n   */\n  tags: string[]\n\n  /**\n   * This is for the client, not used to calculate cache entry expiration\n   * [duration in seconds]\n   */\n  stale: number\n\n  /**\n   * When the cache entry was created [timestamp in milliseconds]\n   */\n  timestamp: Timestamp\n\n  /**\n   * How long the entry is allowed to be used (should be longer than revalidate)\n   * [duration in seconds]\n   */\n  expire: number\n\n  /**\n   * How long until the entry should be revalidated [duration in seconds]\n   */\n  revalidate: number\n}\n\n/**\n * @deprecated Use {@link CacheHandlerV2} instead.\n */\nexport interface CacheHandler {\n  /**\n   * Retrieve a cache entry for the given cache key, if available. The softTags\n   * should be used to check for staleness.\n   */\n  get(cacheKey: string, softTags: string[]): Promise<undefined | CacheEntry>\n\n  /**\n   * Store a cache entry for the given cache key. When this is called, the entry\n   * may still be pending, i.e. its value stream may still be written to. So it\n   * needs to be awaited first. If a `get` for the same cache key is called\n   * before the pending entry is complete, the cache handler must wait for the\n   * `set` operation to finish, before returning the entry, instead of returning\n   * undefined.\n   */\n  set(cacheKey: string, entry: Promise<CacheEntry>): Promise<void>\n\n  /**\n   * Next.js will call this method when `revalidateTag` or `revalidatePath()` is\n   * called. It should update the tags manifest accordingly.\n   */\n  expireTags(...tags: string[]): Promise<void>\n\n  /**\n   * The `receiveExpiredTags` method is called when an action request sends the\n   * 'x-next-revalidated-tags' header to indicate which tags have been expired\n   * by the action. The local tags manifest should be updated accordingly. As\n   * opposed to `expireTags`, the tags don't need to be propagated to a tags\n   * service, as this was already done by the server action.\n   */\n  receiveExpiredTags(...tags: string[]): Promise<void>\n}\n\nexport interface CacheHandlerV2 {\n  /**\n   * Retrieve a cache entry for the given cache key, if available.\n   */\n  get(cacheKey: string): Promise<undefined | CacheEntry>\n\n  /**\n   * Store a cache entry for the given cache key. When this is called, the entry\n   * may still be pending, i.e. its value stream may still be written to. So it\n   * needs to be awaited first. If a `get` for the same cache key is called\n   * before the pending entry is complete, the cache handler must wait for the\n   * `set` operation to finish, before returning the entry, instead of returning\n   * undefined.\n   */\n  set(cacheKey: string, pendingEntry: Promise<CacheEntry>): Promise<void>\n\n  /**\n   * Next.js will call this method periodically, but always before starting a\n   * new request. When working with a remote tags service, this method should\n   * communicate with the tags service to refresh the local tags manifest\n   * accordingly.\n   */\n  refreshTags(): Promise<void>\n\n  /**\n   * Next.js will call this method for each set of soft tags that are relevant\n   * at the start of a request. The result is the maximum timestamp of a\n   * revalidate event for the tags. Returns `0` if none of the tags were ever\n   * revalidated.\n   */\n  getExpiration(...tags: string[]): Promise<Timestamp>\n\n  /**\n   * Next.js will call this method when `revalidateTag` or `revalidatePath()` is\n   * called. It should update the tags manifest accordingly.\n   */\n  expireTags(...tags: string[]): Promise<void>\n}\n\n/**\n * This is a compatibility type to ease migration between cache handler\n * versions. Until the old `CacheHandler` type is removed, this type should be\n * used for all internal Next.js functions that deal with cache handlers to\n * ensure that we are compatible with both cache handler versions. An exception\n * is the built-in default cache handler, which implements the\n * {@link CacheHandlerV2} interface.\n */\nexport type CacheHandlerCompat = CacheHandler | CacheHandlerV2\n"],"names":[],"mappings":"AAAA;;CAEC,GAkHD;;;;;;;CAOC,GACD,WAA8D"}