diff --git a/.husky/pre-commit b/.husky/pre-commit
index 7d0de5da..d24fdfc6 100755
--- a/.husky/pre-commit
+++ b/.husky/pre-commit
@@ -1,4 +1,4 @@
 #!/usr/bin/env sh
 . "$(dirname -- "$0")/_/husky.sh"
 
-lint-staged
+npx lint-staged
diff --git a/package.json b/package.json
index bde7d7ce..81f218f7 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "create-react-class": "^15.6.3",
     "cross-env": "^7.0.2",
     "dumi": "^2.1.3",
-    "eslint": "~7.32.0",
+    "eslint": "~7.31.0",
     "father": "^4.1.3",
     "glob": "^7.1.6",
     "husky": "^8.0.3",
diff --git a/src/Dom/findDOMNode.ts b/src/Dom/findDOMNode.ts
index 432ced2b..c1278001 100644
--- a/src/Dom/findDOMNode.ts
+++ b/src/Dom/findDOMNode.ts
@@ -1,7 +1,7 @@
 import React from 'react';
 import ReactDOM from 'react-dom';
 
-export function isDOM(node: any) {
+export function isDOM(node: any): node is HTMLElement | SVGElement {
   // https://developer.mozilla.org/en-US/docs/Web/API/Element
   // Since XULElement is also subclass of Element, we only need HTMLElement and SVGElement
   return node instanceof HTMLElement || node instanceof SVGElement;
@@ -14,11 +14,11 @@ export default function findDOMNode<T = Element | Text>(
   node: React.ReactInstance | HTMLElement | SVGElement,
 ): T {
   if (isDOM(node)) {
-    return node as unknown as T;
+    return (node as unknown) as T;
   }
 
   if (node instanceof React.Component) {
-    return ReactDOM.findDOMNode(node) as unknown as T;
+    return (ReactDOM.findDOMNode(node) as unknown) as T;
   }
 
   return null;
diff --git a/tests/findDOMNode.test.tsx b/tests/findDOMNode.test.tsx
index be4b6533..2eb05682 100644
--- a/tests/findDOMNode.test.tsx
+++ b/tests/findDOMNode.test.tsx
@@ -1,6 +1,6 @@
 import { render } from '@testing-library/react';
 import * as React from 'react';
-import findDOMNode from '../src/Dom/findDOMNode';
+import findDOMNode, { isDOM } from '../src/Dom/findDOMNode';
 
 describe('findDOMNode', () => {
   it('base work', () => {
@@ -60,4 +60,18 @@ describe('findDOMNode', () => {
     const svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
     expect(findDOMNode(svg)).toBe(svg);
   });
+
+  it('isDOM type', () => {
+    const svg: any = document.createElementNS(
+      'http://www.w3.org/2000/svg',
+      'svg',
+    );
+
+    // This `getBoundingClientRect` is used for ts type check
+    if (isDOM(svg) && svg.getBoundingClientRect()) {
+      expect(true).toBeTruthy();
+    } else {
+      expect(true).toBeFalsy();
+    }
+  });
 });