{"width":"100%","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsusisu.hatenablog.com%2Fentry%2F2023%2F03%2F24%2F232428\" title=\"TypeScript \u578b\u30ec\u30d9\u30eb\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 in 2023 - Object.create(null)\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","type":"rich","url":"https://susisu.hatenablog.com/entry/2023/03/24/232428","description":"\u3061\u3087\u3063\u3068\u524d\u306b\u8a71\u984c\u306b\u306a\u3063\u305f hotscript \u306e\u6280\u6cd5\u306e\u7d39\u4ecb\u3084\u3089, \u30e9\u30e0\u30c0\u8a08\u7b97\u3092 TypeScript \u306e\u578b\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u8a71\u3084\u3089\u306a\u3093\u3084\u3089. \u901a\u5e38\u306e\u578b\u30ec\u30d9\u30eb\u95a2\u6570 TypeScript \u306e\u578b\u30a8\u30a4\u30ea\u30a2\u30b9\u306f\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d6\u308c\u308b\u306e\u3067, \u3053\u308c\u306f\u578b\u30ec\u30d9\u30eb\u306e\u95a2\u6570\u3067\u3042\u308b\u3068\u307f\u306a\u305b\u307e\u3059. type IsNumber<X> = X extends number ? true : false; type A = IsNumber<42>; // = true \u4e00\u65b9\u3067\u3053\u306e\u3088\u3046\u306b\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u305f\u95a2\u6570\u306f\u7b2c\u4e00\u7d1a\u3067\u306f\u306a\u3044, \u3064\u307e\u308a\u95a2\u6570\u305d\u306e\u3082\u306e\u3092\u4ed6\u306e\u95a2\u6570\u306e\u5f15\u6570\u3068\u3057\u3066\u6e21\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093. type FilterUnion<F,\u2026","author_name":"susisu","version":"1.0","blog_url":"https://susisu.hatenablog.com/","title":"TypeScript \u578b\u30ec\u30d9\u30eb\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 in 2023","blog_title":"Object.create(null)","provider_name":"Hatena Blog","published":"2023-03-24 23:24:28","categories":["TypeScript","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"author_url":"https://blog.hatena.ne.jp/susisu/","provider_url":"https://hatena.blog"}