#react #reactdnd #dragdrop
React-DnDでドラッグ&ドロップを行う（モバイル対応も） - Qiita https://qiita.com/mitubaEX328/items/7e4a279c58ef6501f8b9
reactjs - Minimal react-dnd hooks example breaks on "Expected drag drop context" - Stack Overflow https://stackoverflow.com/questions/66691773/minimal-react-dnd-hooks-example-breaks-on-expected-drag-drop-context
javascript - spec.type must be defined in react-dnd - Stack Overflow https://stackoverflow.com/questions/66667906/spec-type-must-be-defined-in-react-dnd

React-DnDを初めて使う。

yarn add react-dnd react-dnd-html5-backend

<DndProvider backend={HTML5Backend}>

で囲えば使えるようだ。
それ以上のことはこれから勉強。