package.json: add lint-staged

.prettierignore

@@ -1,2 +1,3 @@
 src/lib/
-app/
+app/
+build/

package.json

@@ -8,7 +8,8 @@
 		"serve": "preact build && preact serve",
 		"dev": "preact watch --template src/index.html --https --no-prerender",
 		"lint": "eslint src",
-		"test": "jest ./tests"
+		"test": "jest ./tests",
+		"precommit": "lint-staged"
 	},
 	"eslintConfig": {
 		"extends": "eslint-config-synacor"
@@ -16,6 +17,12 @@
 	"eslintIgnore": [
 		"build/*"
 	],
+	"lint-staged": {
+		"*.{js,jsx,json,css,md}": [
+			"prettier --write",
+			"git add"
+		]
+	},
 	"devDependencies": {
 		"babel-eslint": "^7.2.3",
 		"babel-minify": "^0.2.0",
@@ -27,9 +34,11 @@
 		"gulp-rename": "^1.3.0",
 		"gulp-uglify": "^3.0.0",
 		"gulp-useref": "^3.1.3",
+		"husky": "^0.14.3",
 		"identity-obj-proxy": "^3.0.0",
 		"if-env": "^1.0.0",
 		"jest": "^21.2.1",
+		"lint-staged": "^7.2.0",
 		"merge-stream": "^1.0.1",
 		"preact-cli": "^2.1.0",
 		"preact-render-spy": "^1.2.1",