allow bounds of {eq: key}

src/client/index.ts

@@ -37,7 +37,7 @@ export type Item<K extends Key, ID extends string> = {
   sumValue: number;
 };
 
-export type { Key, Bound };
+export type { Key, Bound, Bounds };
 
 /**
  * Write data to be aggregated, and read aggregated data.

src/client/positions.ts

@@ -28,8 +28,11 @@ export type TuplePrefix<
 
 export type Bounds<K extends Key, ID extends string> =
   | SideBounds<K, ID>
+  | (K extends unknown[]
+      ? { prefix: TuplePrefix<Extract<K, unknown[]>> }
+      : never)
   | {
-      prefix: TuplePrefix<Extract<K, unknown[]>>;
+      eq: K;
     };
 
 // IDs are strings so in the Convex ordering, null < IDs < arrays.
@@ -83,6 +86,12 @@ export function boundsToPositions<K extends Key, ID extends string>(
   if (bounds === undefined) {
     return {};
   }
+  if ("eq" in bounds) {
+    return {
+      k1: boundToPosition("lower", { key: bounds.eq, inclusive: true }),
+      k2: boundToPosition("upper", { key: bounds.eq, inclusive: true }),
+    };
+  }
   if ("prefix" in bounds) {
     const prefix: Key[] = bounds.prefix;
     const exploded: Key = [];