v1.0 with SW PWA enabled

frontend/node_modules/idb/build/async-iterators.js

@@ -0,0 +1,55 @@
+import { r as replaceTraps, a as reverseTransformCache, u as unwrap, i as instanceOfAny } from './wrap-idb-value.js';
+
+const advanceMethodProps = ['continue', 'continuePrimaryKey', 'advance'];
+const methodMap = {};
+const advanceResults = new WeakMap();
+const ittrProxiedCursorToOriginalProxy = new WeakMap();
+const cursorIteratorTraps = {
+    get(target, prop) {
+        if (!advanceMethodProps.includes(prop))
+            return target[prop];
+        let cachedFunc = methodMap[prop];
+        if (!cachedFunc) {
+            cachedFunc = methodMap[prop] = function (...args) {
+                advanceResults.set(this, ittrProxiedCursorToOriginalProxy.get(this)[prop](...args));
+            };
+        }
+        return cachedFunc;
+    },
+};
+async function* iterate(...args) {
+    // tslint:disable-next-line:no-this-assignment
+    let cursor = this;
+    if (!(cursor instanceof IDBCursor)) {
+        cursor = await cursor.openCursor(...args);
+    }
+    if (!cursor)
+        return;
+    cursor = cursor;
+    const proxiedCursor = new Proxy(cursor, cursorIteratorTraps);
+    ittrProxiedCursorToOriginalProxy.set(proxiedCursor, cursor);
+    // Map this double-proxy back to the original, so other cursor methods work.
+    reverseTransformCache.set(proxiedCursor, unwrap(cursor));
+    while (cursor) {
+        yield proxiedCursor;
+        // If one of the advancing methods was not called, call continue().
+        cursor = await (advanceResults.get(proxiedCursor) || cursor.continue());
+        advanceResults.delete(proxiedCursor);
+    }
+}
+function isIteratorProp(target, prop) {
+    return ((prop === Symbol.asyncIterator &&
+        instanceOfAny(target, [IDBIndex, IDBObjectStore, IDBCursor])) ||
+        (prop === 'iterate' && instanceOfAny(target, [IDBIndex, IDBObjectStore])));
+}
+replaceTraps((oldTraps) => ({
+    ...oldTraps,
+    get(target, prop, receiver) {
+        if (isIteratorProp(target, prop))
+            return iterate;
+        return oldTraps.get(target, prop, receiver);
+    },
+    has(target, prop) {
+        return isIteratorProp(target, prop) || oldTraps.has(target, prop);
+    },
+}));