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node_modules/next/dist/esm/server/after/awaiter.js

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+import { InvariantError } from '../../shared/lib/invariant-error';
+/**
+ * Provides a `waitUntil` implementation which gathers promises to be awaited later (via {@link AwaiterMulti.awaiting}).
+ * Unlike a simple `Promise.all`, {@link AwaiterMulti} works recursively --
+ * if a promise passed to {@link AwaiterMulti.waitUntil} calls `waitUntil` again,
+ * that second promise will also be awaited.
+ */ export class AwaiterMulti {
+    constructor({ onError } = {}){
+        this.promises = new Set();
+        this.waitUntil = (promise)=>{
+            // if a promise settles before we await it, we should drop it --
+            // storing them indefinitely could result in a memory leak.
+            const cleanup = ()=>{
+                this.promises.delete(promise);
+            };
+            promise.then(cleanup, (err)=>{
+                cleanup();
+                this.onError(err);
+            });
+            this.promises.add(promise);
+        };
+        this.onError = onError ?? console.error;
+    }
+    async awaiting() {
+        while(this.promises.size > 0){
+            const promises = Array.from(this.promises);
+            this.promises.clear();
+            await Promise.allSettled(promises);
+        }
+    }
+}
+/**
+ * Like {@link AwaiterMulti}, but can only be awaited once.
+ * If {@link AwaiterOnce.waitUntil} is called after that, it will throw.
+ */ export class AwaiterOnce {
+    constructor(options = {}){
+        this.done = false;
+        this.waitUntil = (promise)=>{
+            if (this.done) {
+                throw Object.defineProperty(new InvariantError('Cannot call waitUntil() on an AwaiterOnce that was already awaited'), "__NEXT_ERROR_CODE", {
+                    value: "E563",
+                    enumerable: false,
+                    configurable: true
+                });
+            }
+            return this.awaiter.waitUntil(promise);
+        };
+        this.awaiter = new AwaiterMulti(options);
+    }
+    async awaiting() {
+        if (!this.pending) {
+            this.pending = this.awaiter.awaiting().finally(()=>{
+                this.done = true;
+            });
+        }
+        return this.pending;
+    }
+}
+
+//# sourceMappingURL=awaiter.js.map