{"version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsusisu.hatenablog.com%2Fentry%2F2025%2F12%2F04%2F130842\" title=\"never \u304c\u597d\u304d - 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>","url":"https://susisu.hatenablog.com/entry/2025/12/04/130842","blog_url":"https://susisu.hatenablog.com/","image_url":null,"title":"never \u304c\u597d\u304d","width":"100%","blog_title":"Object.create(null)","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/susisu/","categories":["\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","TypeScript"],"description":"\u3053\u306e\u8a18\u4e8b\u306f \u306f\u3066\u306a\u30a8\u30f3\u30b8\u30cb\u30a2 Advent Calendar 2025 \u306e 4 \u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059. id:susisu \u3067\u3059. TypeScript \u306e never \u578b\u304c\u305f\u3044\u3078\u3093\u5965\u3086\u304b\u3057\u3044\u306e\u3067\u898b\u3066\u3044\u3063\u3066\u304f\u3060\u3055\u3044. \u57fa\u790e\u7de8 \u307e\u305a\u306f never \u578b\u304c\u3069\u3046\u3044\u3063\u305f\u3082\u306e\u306a\u306e\u304b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046. \u5024\u306e\u306a\u3044\u578b\u3068\u3057\u3066 \u4f8b\u3048\u3070 number \u578b\u306b\u5bfe\u3057\u3066\u306f 42, 3.14, NaN \u306a\u3069 , string \u578b\u306b\u5bfe\u3057\u3066\u306f \"\", \"Hello\" \u306a\u3069\u306e\u3088\u3046\u306b, \u4e00\u822c\u7684\u306a\u578b\u306b\u306f\u305d\u306e\u578b\u304c\u4ed8\u3051\u3089\u308c\u308b\u5024\u304c\u5b58\u5728\u3057\u307e\u3059. \u4e00\u65b9\u3067 never \u578b\u306b\u306f\u305d\u3046\u3044\u3063\u305f\u5024\u304c\u5b58\u5728\u3057\u307e\u305b\u3093 (\u3053\u3046\u3044\u3063\u305f\u578b\u306f\u4e00\u822c\u306b\u30dc\u30c8\u30e0\u578b\u306a\u3069\u3068\u547c\u3070\u308c\u305f\u308a\u3057\u307e\u3059\u2026","provider_name":"Hatena Blog","author_name":"susisu","height":"190","published":"2025-12-04 13:08:42","type":"rich"}