planning

node_modules/react-dnd/lib/hooks/useDrop/useAccept.js

@@ -0,0 +1,14 @@
+import { invariant } from '@react-dnd/invariant';
+import { useMemo } from 'react';
+/**
+ * Internal utility hook to get an array-version of spec.accept.
+ * The main utility here is that we aren't creating a new array on every render if a non-array spec.accept is passed in.
+ * @param spec
+ */
+export function useAccept(spec) {
+    const { accept } = spec;
+    return useMemo(() => {
+        invariant(spec.accept != null, 'accept must be defined');
+        return Array.isArray(accept) ? accept : [accept];
+    }, [accept]);
+}