Fix package script to clean dist directory before bundling

Author: ncalteen

package.json

@@ -31,7 +31,7 @@
     "format:write": "npx prettier --write .",
     "format:check": "npx prettier --check .",
     "lint": "npx eslint .",
-    "package": "npx rollup --config rollup.config.js",
+    "package": "npx rimraf ./dist && npx rollup --config rollup.config.js",
     "package:watch": "npm run package -- --watch",
     "test": "NODE_OPTIONS=--experimental-vm-modules NODE_NO_WARNINGS=1 npx jest",
     "all": "npm run format:write && npm run lint && npm run test && npm run coverage && npm run package"