Always remove old build files

Author: flekschas

package.json

@@ -17,8 +17,7 @@
     "dist/*"
   ],
   "scripts": {
-    "buildd": "rollup -c",
-    "build": "rollup -c; webpack --config ./webpack.config.js --mode production",
+    "build": "rm -rf dist/*; rollup -c; webpack --config ./webpack.config.js --mode production",
     "ghp": "npm run build; rm -rf ../regl-scatterplot-ghp/*; touch ../regl-scatterplot-ghp/.nojekyll; cp -r docs/* ../regl-scatterplot-ghp/",
     "lint": "eslint src tests rollup.config.js webpack.config.js",
     "precommit": "NODE_ENV=production lint-staged; npm run test",