Initial commit

frontend/webapp/node_modules/next/dist/esm/server/dynamic-rendering-utils.js

@@ -0,0 +1,52 @@
+export function isHangingPromiseRejectionError(err) {
+    if (typeof err !== 'object' || err === null || !('digest' in err)) {
+        return false;
+    }
+    return err.digest === HANGING_PROMISE_REJECTION;
+}
+const HANGING_PROMISE_REJECTION = 'HANGING_PROMISE_REJECTION';
+class HangingPromiseRejectionError extends Error {
+    constructor(expression){
+        super(`During prerendering, ${expression} rejects when the prerender is complete. Typically these errors are handled by React but if you move ${expression} to a different context by using \`setTimeout\`, \`after\`, or similar functions you may observe this error and you should handle it in that context.`), this.expression = expression, this.digest = HANGING_PROMISE_REJECTION;
+    }
+}
+const abortListenersBySignal = new WeakMap();
+/**
+ * This function constructs a promise that will never resolve. This is primarily
+ * useful for dynamicIO where we use promise resolution timing to determine which
+ * parts of a render can be included in a prerender.
+ *
+ * @internal
+ */ export function makeHangingPromise(signal, expression) {
+    if (signal.aborted) {
+        return Promise.reject(new HangingPromiseRejectionError(expression));
+    } else {
+        const hangingPromise = new Promise((_, reject)=>{
+            const boundRejection = reject.bind(null, new HangingPromiseRejectionError(expression));
+            let currentListeners = abortListenersBySignal.get(signal);
+            if (currentListeners) {
+                currentListeners.push(boundRejection);
+            } else {
+                const listeners = [
+                    boundRejection
+                ];
+                abortListenersBySignal.set(signal, listeners);
+                signal.addEventListener('abort', ()=>{
+                    for(let i = 0; i < listeners.length; i++){
+                        listeners[i]();
+                    }
+                }, {
+                    once: true
+                });
+            }
+        });
+        // We are fine if no one actually awaits this promise. We shouldn't consider this an unhandled rejection so
+        // we attach a noop catch handler here to suppress this warning. If you actually await somewhere or construct
+        // your own promise out of it you'll need to ensure you handle the error when it rejects.
+        hangingPromise.catch(ignoreReject);
+        return hangingPromise;
+    }
+}
+function ignoreReject() {}
+
+//# sourceMappingURL=dynamic-rendering-utils.js.map