fix: mutate args for useSWRInfinite hook

infinite/index.ts

@@ -180,9 +180,13 @@ export const infinite = (<Data, Error>(useSWRNext: SWRHook) =>
             ]
       ) => {
         const data = args[0]
+
+        // When passing as a boolean, it's explicitly used to disable/enable
+        // revalidation.
+        const options = typeof args[1] === 'boolean' ? {revalidate: args[1]} : args[1] || {}
 
         // Default to true.
-        const shouldRevalidate = args[1] !== false
+        const shouldRevalidate = options.revalidate !== false
 
         // It is possible that the key is still falsy.
         if (!infiniteKey) return

test/use-swr-infinite.test.tsx

@@ -1181,7 +1181,7 @@ describe('useSWRInfinite', () => {
     await screen.findByText('data: B1,B2,B3')
   })
 
-  it('should revalidate when the component is mounted and revalidateOnMount is enabled', async () => {
+  it('should revalidate the resource with bound mutate when arguments are passed', async () => {
     const key = createKey()
 
     let counter = 0
@@ -1220,4 +1220,69 @@ describe('useSWRInfinite', () => {
     fireEvent.click(screen.getByText('mutate'))
     await screen.findByText('data: 2')
   })
+
+  // https://github.com/vercel/swr/issues/1899
+  it('should revalidate the resource with bound mutate when options is of Object type ', async () => {
+    let t = 0
+    const key = createKey()
+    const fetcher = jest.fn(async () =>
+      createResponse(`foo-${t++}`, { delay: 10 })
+    )
+    const logger = []
+    function Page() {
+      const { data, mutate } = useSWRInfinite(() => key, fetcher, {
+        dedupingInterval: 0
+      })
+      logger.push(data)
+      return (
+        <>
+          <div>data: {String(data)}</div>
+          <button onClick={() => mutate(data, { revalidate: true })}>
+            mutate
+          </button>
+        </>
+      )
+    }
+
+    renderWithConfig(<Page />)
+    await screen.findByText('data: foo-0')
+
+    fireEvent.click(screen.getByText('mutate'))
+    await screen.findByText('data: foo-1')
+    expect(fetcher).toBeCalledTimes(2)
+
+    expect(logger).toEqual([undefined, ['foo-0'], ['foo-1']])
+  })
+
+  // https://github.com/vercel/swr/issues/1899
+  it('should not revalidate the resource with bound mutate when options is of Object type', async () => {
+    let t = 0
+    const key = createKey()
+    const fetcher = jest.fn(async () =>
+      createResponse(`foo-${t++}`, { delay: 10 })
+    )
+    const logger = []
+    function Page() {
+      const { data, mutate } = useSWRInfinite(() => key, fetcher, {
+        dedupingInterval: 0
+      })
+      logger.push(data)
+      return (
+        <>
+          <div>data: {String(data)}</div>
+          <button onClick={() => mutate(data, { revalidate: false })}>
+            mutate
+          </button>
+        </>
+      )
+    }
+
+    renderWithConfig(<Page />)
+    await screen.findByText('data: foo-0')
+
+    fireEvent.click(screen.getByText('mutate'))
+    expect(fetcher).toBeCalledTimes(1)
+
+    expect(logger).toEqual([undefined, ['foo-0']])
+  })
 })