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-rw-r--r--packages/idb-bridge/src/tree/interfaces.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/packages/idb-bridge/src/tree/interfaces.ts b/packages/idb-bridge/src/tree/interfaces.ts
index c708c20b5..6bd0cdf58 100644
--- a/packages/idb-bridge/src/tree/interfaces.ts
+++ b/packages/idb-bridge/src/tree/interfaces.ts
@@ -53,7 +53,7 @@ export interface IMapSource<K=any, V=any> extends ISetSource<K>
/** Calls callbackFn once for each key-value pair present in the map object.
* The ES6 Map class sends the value to the callback before the key, so
* this interface must do likewise. */
- forEach(callbackFn: (v:V, k:K, map:IMapSource<K,V>) => void, thisArg: any): void;
+ forEach(callbackFn: (v:V, k:K, map:IMapSource<K,V>) => void, thisArg?: any): void;
/** Returns an iterator that provides all key-value pairs from the collection (as arrays of length 2). */
entries(): IterableIterator<[K,V]>;