fix: simplify useDragType (#3127)

* fix: simplify useDragType

* chore: cut semver

* fix: test update

.yarn/versions/e6267e85.yml

@@ -0,0 +1,8 @@
+releases:
+  react-dnd: patch
+
+declined:
+  - react-dnd-documentation
+  - react-dnd-examples-decorators
+  - react-dnd-examples-hooks
+  - react-dnd-test-utils

packages/react-dnd/src/hooks/__tests__/useDrag.spec.tsx

@@ -34,9 +34,7 @@ describe('The useDrag hook', () => {
 		try {
 			const errorMock = jest.fn()
 			console.error = errorMock
-			expect(() => render(<Wrapped />)).toThrow(
-				/spec.type or spec.item.type must be defined/,
-			)
+			expect(() => render(<Wrapped />)).toThrow(/spec.type must be defined/)
 		} finally {
 			console.error = err
 		}

packages/react-dnd/src/hooks/useDrag/useDragType.ts

@@ -7,9 +7,8 @@ export function useDragType(
 	spec: DragSourceHookSpec<any, any, any>,
 ): Identifier {
 	return useMemo(() => {
-		const result: Identifier | null =
-			spec.type ?? (spec.item?.type as Identifier) ?? null
-		invariant(result != null, 'spec.type or spec.item.type must be defined')
+		const result: Identifier = spec.type
+		invariant(result != null, 'spec.type must be defined')
 		return result
 	}, [spec])
 }