chore: add duck selector namespacing

src/components/Provider.tsx

@@ -1,7 +1,7 @@
 import * as React from "react";
-import { useGetter } from "src/hooks/useGetter";
 import { ActionTypes } from "src/utils/actionTypes";
 import { createAction } from "src/createAction";
+import { useGetter } from "src/hooks/useGetter";
 
 export function Provider<S, T extends string, P>({
     children,

src/createRootDuck.ts

@@ -1,4 +1,5 @@
 import { combineReducers } from "./utils/combineReducers";
+import { combineSelectors } from "./utils/combineSelectors";
 
 export function createRootDuck<
     D extends Duck<S, N, T, P, R, Q, U>[],
@@ -22,7 +23,10 @@ export function createRootDuck<
         const duckName = duck.name;
         rootDuck.actions[duckName] = duck.actions;
         rootDuck.initialState[duckName] = duck.initialState;
-        rootDuck.selectors[duckName] = duck.selectors;
+        rootDuck.selectors[duckName] = combineSelectors(
+            duckName,
+            duck.selectors,
+        );
         reducerMapping[duckName] = duck.reducer;
     }
     rootDuck.reducer = combineReducers(rootDuck.initialState, reducerMapping);

src/utils/combineSelectors.ts

@@ -0,0 +1,19 @@
+export function combineSelectors<
+    S,
+    T extends string,
+    P,
+    R,
+    N extends string,
+    Q extends string
+>(
+    duckName: N,
+    selectors?: SelectorMapping<S, R, T, P, Q>,
+): SelectorMapping<S, R, T, P, Q> | undefined {
+    if (!selectors) return;
+    const duckSelectors = {} as SelectorMapping<S, R, T, P, Q>;
+    for (const s of Object.keys(selectors) as Q[]) {
+        duckSelectors[s] = (state: S): R =>
+            selectors[s](((state as unknown) as Record<string, S>)[duckName]);
+    }
+    return duckSelectors;
+}