Modden ES Classes.

Author: yusuke-omae

package.json

@@ -50,12 +50,14 @@
     "build:css": "postcss src/css/lightbox.css -o dist/css/lightbox.css",
     "build:js": "node scripts/build.mjs",
     "clean": "del-cli dist",
+    "clean:js": "del-cli dist/js",
     "format": "prettier --write src",
     "format:css": "prettier --write src/css/lightbox.css",
     "format:js": "prettier --write src/ts",
     "lint": "run-p lint:*",
     "lint:css": "stylelint src/css/lightbox.css",
     "lint:js": "eslint src/js/*.js",
+    "prebuild:js": "npm run clean:js",
     "watch": "run-p watch:*",
     "watch:css": "npm run build:css -- -w",
     "watch:js": "node scripts/watch.mjs",