Add hooks

packages/hooks/src/useMount/index.ts

@@ -0,0 +1,9 @@
+import { useEffect } from 'react'
+
+const useMount = (fn: () => void) => {
+  useEffect(() => {
+    fn?.()
+  }, [])
+}
+
+export default useMount

packages/hooks/src/useUnmount/index.ts

@@ -0,0 +1,13 @@
+import { useEffect } from 'react'
+import useLatest from '../useLatest'
+const useUnmount = (fn: () => void) => {
+  const fnRef = useLatest(fn)
+  useEffect(
+    () => () => {
+      fnRef.current()
+    },
+    []
+  )
+}
+
+export default useUnmount

packages/hooks/src/useUnmountedRef/index.ts

@@ -0,0 +1,14 @@
+import { useEffect, useRef } from 'react'
+
+const useUnmountedRef = () => {
+  const unmountedRef = useRef(false)
+  useEffect(() => {
+    unmountedRef.current = false
+    return () => {
+      unmountedRef.current = true
+    }
+  }, [])
+  return unmountedRef
+}
+
+export default useUnmountedRef