Backend half

2025-07-11 19:56:28 +02:00
parent fa868e7c1d
commit 8600fa7c1d
19426 changed files with 3750448 additions and 8108 deletions
@@ -0,0 +1,45 @@
+export const memoize = (provider, isExpired, requiresRefresh) => {
+    let resolved;
+    let pending;
+    let hasResult;
+    let isConstant = false;
+    const coalesceProvider = async () => {
+        if (!pending) {
+            pending = provider();
+        }
+        try {
+            resolved = await pending;
+            hasResult = true;
+            isConstant = false;
+        }
+        finally {
+            pending = undefined;
+        }
+        return resolved;
+    };
+    if (isExpired === undefined) {
+        return async (options) => {
+            if (!hasResult || options?.forceRefresh) {
+                resolved = await coalesceProvider();
+            }
+            return resolved;
+        };
+    }
+    return async (options) => {
+        if (!hasResult || options?.forceRefresh) {
+            resolved = await coalesceProvider();
+        }
+        if (isConstant) {
+            return resolved;
+        }
+        if (requiresRefresh && !requiresRefresh(resolved)) {
+            isConstant = true;
+            return resolved;
+        }
+        if (isExpired(resolved)) {
+            await coalesceProvider();
+            return resolved;
+        }
+        return resolved;
+    };
+};