Stan

It's Parcel's issue, it incorrectly detects source maps. See https://github.com/parcel-bundler/parcel/issues/2408 for example. For time being, one can use `--no-source-maps` flag to turn source maps off (see https://github.com/parcel-bundler/parcel#--no-source-maps).

This is because `ReactSortable` is compiled into a function that explicitly calls ```javascript props.setList(newList, _this.sortable, store); ``` If this was source code, wrapping this call with `useEffect` would fix the...