add husky

Author: tomchen

.husky/.gitignore

@@ -0,0 +1 @@
+_

package.json

@@ -7,6 +7,7 @@
   "umd:main": "dist/umd/index.js",
   "types": "dist/types/index.d.js",
   "scripts": {
+    "postinstall": "husky install",
     "build": "npm run build:cjs && npm run build:esm && npm run build:umd && npm run build:types",
     "build:cjs": "node tools/cleanup cjs && tsc -p config/tsconfig.cjs.json",
     "build:esm": "node tools/cleanup esm && tsc -p config/tsconfig.esm.json",
@@ -49,18 +50,19 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "@types/jest": "^26.0.19",
-    "@typescript-eslint/eslint-plugin": "^4.11.1",
-    "@typescript-eslint/parser": "^4.11.1",
-    "eslint": "^7.16.0",
-    "eslint-config-prettier": "^7.1.0",
-    "eslint-plugin-prettier": "^3.3.0",
+    "@types/jest": "^26.0.20",
+    "@typescript-eslint/eslint-plugin": "^4.15.0",
+    "@typescript-eslint/parser": "^4.15.0",
+    "eslint": "^7.19.0",
+    "eslint-config-prettier": "^7.2.0",
+    "eslint-plugin-prettier": "^3.3.1",
+    "husky": "^5.0.9",
     "jest": "^26.6.3",
     "prettier": "^2.2.1",
-    "ts-jest": "^26.4.4",
-    "ts-loader": "^8.0.13",
+    "ts-jest": "^26.5.0",
+    "ts-loader": "^8.0.16",
     "typescript": "^4.1.3",
-    "webpack": "^5.11.1",
-    "webpack-cli": "^4.3.1"
+    "webpack": "^5.21.2",
+    "webpack-cli": "^4.5.0"
   }
 }