{"title":"TypeScript 5.8\u3067\u6761\u4ef6\u4ed8\u304d\u623b\u308a\u5024\u578b\u306b\u5bfe\u3059\u308b\u30ca\u30ed\u30fc\u30a4\u30f3\u30b0\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u305d\u3046\uff08\u7279\u5b9a\u306e\u5236\u7d04\u3092\u6e80\u305f\u3059\u5834\u5408\uff09","description":"\u6570\u65e5\u524d\u306bTypeScript 5.7 RC\u304c\u30a2\u30ca\u30a6\u30f3\u30b9\u3055\u308c\u3066\u30ea\u30ea\u30fc\u30b9\u304c\u697d\u3057\u307f\u3060\u306a\u30fc\uff01\u3063\u3066\u3068\u3053\u308d\u306a\u3093\u3060\u3051\u3069\u3001\u305d\u306e\u3055\u3089\u306b\u6570\u65e5\u524d\u306b\u3001\u30a6\u30a9\u30c3\u30c1\u3057\u3066\u3044\u305f\u3053\u306ePR\u2193\u304c\u30de\u30fc\u30b8\u3055\u308c\u3066TypeScript 5.8.0\u306e\u30de\u30a4\u30eb\u30b9\u30c8\u30fc\u30f3\u306b\u5165\u3063\u305f\u3002\u308f\u30fc\uff01 \u3053\u308c\u304c\u4eca\u65e5\u306e\u304a\u8a71\u3002TypeScript 5.8.0\u3067Conditional return type narrowing\u304c\u5165\u308a\u305d\u3046\u3002\u697d\u3057\u307f\uff01 Conditional return type narrowing? \u76f4\u8a33\u3059\u308b\u3068\u300c\u6761\u4ef6\u4ed8\u304d\u623b\u308a\u5024\u578b\u306e\u7d5e\u308a\u8fbc\u307f\u300d\u304b\u306a\u3002\u5f15\u6570\u306e\u578b\u306b\u3088\u3063\u3066\u623b\u308a\u5024\u306e\u578b\u304c\u5909\u308f\u308b\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u305f\u3044\u3068\u304d\u306b\u3001\u4f8b\u3048\u3070\u3053\u3093\u306a\u98a8\u306b\u66f8\u304d\u305f\u304f\u306a\u308b\u3002 declare con\u2026","author_url":"https://blog.hatena.ne.jp/bufferings/","type":"rich","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbufferings.hatenablog.com%2Fentry%2F2024%2F11%2F11%2F232139\" title=\"TypeScript 5.8\u3067\u6761\u4ef6\u4ed8\u304d\u623b\u308a\u5024\u578b\u306b\u5bfe\u3059\u308b\u30ca\u30ed\u30fc\u30a4\u30f3\u30b0\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u305d\u3046\uff08\u7279\u5b9a\u306e\u5236\u7d04\u3092\u6e80\u305f\u3059\u5834\u5408\uff09 - Mitsuyuki.Shiiba\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2024-11-11 23:21:39","author_name":"bufferings","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/b/bufferings/20241111/20241111212046.png","height":"190","width":"100%","provider_name":"Hatena Blog","blog_url":"https://bufferings.hatenablog.com/","version":"1.0","blog_title":"Mitsuyuki.Shiiba","url":"https://bufferings.hatenablog.com/entry/2024/11/11/232139","categories":["TypeScript"]}