{"description":"React \u306e useState \u3067\u8fd4\u3055\u308c\u308b state \u306e\u578b\u3092\u6307\u5b9a\u3057\u305f\u3044 useState<\u578b>(initial value) \u3067 state \u306b\u578b\u3092\u5f37\u5236\u3067\u304d\u308b type IdolType = 'cute' | 'cool' | 'pop' | 'sexy'; const [type, setType] = useState<IdolType>('cute'); setType('foo'); // => Argument of type '\"foo\"' is not assignable to parameter of type 'SetStateAction<IdolType>' set\u2026","version":"1.0","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","title":"React TypeScript useState \u306b\u578b\u3092\u8a2d\u5b9a\u3057\u305f\u3044","height":"190","width":"100%","type":"rich","author_name":"kikiki-kiki","categories":["TypeScript","React","JavaScript"],"image_url":"https://m.media-amazon.com/images/I/41TW3EHwQPL._SL160_.jpg","blog_title":"\u304b\u3082\u30e1\u30e2","published":"2020-08-16 08:30:00","author_url":"https://blog.hatena.ne.jp/kikiki-kiki/","url":"https://chaika.hatenablog.com/entry/2020/08/16/083000","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaika.hatenablog.com%2Fentry%2F2020%2F08%2F16%2F083000\" title=\"React TypeScript useState \u306b\u578b\u3092\u8a2d\u5b9a\u3057\u305f\u3044 - \u304b\u3082\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://chaika.hatenablog.com/"}