feat: expose mutateTag from package import

src/_internal/index.ts

@@ -5,7 +5,13 @@ import { INFINITE_PREFIX } from './constants'
 export { SWRConfig, revalidateEvents, INFINITE_PREFIX }
 
 export { initCache } from './utils/cache'
-export { defaultConfig, cache, mutate, compare } from './utils/config'
+export {
+  defaultConfig,
+  cache,
+  mutate,
+  mutateTag,
+  compare
+} from './utils/config'
 import { setupDevTools } from './utils/devtools'
 export * from './utils/env'
 export { SWRGlobalState } from './utils/global-state'

src/core/index.ts

@@ -5,7 +5,7 @@ export default useSWR
 export { SWRConfig } from './use-swr'
 export { unstable_serialize } from './serialize'
 export { useSWRConfig } from '../_internal'
-export { mutate } from '../_internal'
+export { mutate, mutateTag } from '../_internal'
 export { preload } from '../_internal'
 
 // Types

test/use-swr-mutate-tag.test.tsx

@@ -1,9 +1,26 @@
-import { screen, fireEvent } from '@testing-library/react'
-import useSWR, { useSWRConfig } from 'swr'
-import { createKey, createResponse, renderWithConfig } from './utils'
+import { screen, fireEvent, act } from '@testing-library/react'
+import useSWR, { useSWRConfig, mutateTag as globalMutateTag } from 'swr'
+import {
+  createKey,
+  createResponse,
+  renderWithConfig,
+  renderWithGlobalCache
+} from './utils'
 import useSWRInfinite from 'swr/infinite'
 
 describe('mutateTag', () => {
+  it('should return the global mutateTag by default', async () => {
+    let localMutateTag
+    function Page() {
+      const { mutateTag } = useSWRConfig()
+      localMutateTag = mutateTag
+      return null
+    }
+
+    renderWithGlobalCache(<Page />)
+    expect(localMutateTag).toBe(globalMutateTag)
+  })
+
   it('should support mutate tag', async () => {
     const key1 = createKey()
     const key2 = createKey()