{"categories":["TypeScript"],"height":"190","provider_name":"Hatena Blog","published":"2018-02-07 19:07:22","author_url":"https://blog.hatena.ne.jp/falsandtru/","width":"100%","url":"https://falsandtru.hatenablog.com/entry/type-level-typescript","provider_url":"https://hatena.blog","blog_title":"falsandtru\u306e\u30e1\u30e2\u5e33","title":"TypeScript\u3067\u578b\u30ec\u30d9\u30eb\u95a2\u6570\u3068Required/DeepRequired\u578b\u3092\u4f5c\u3063\u3066\u578b\u30ec\u30d9\u30eb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","blog_url":"https://falsandtru.hatenablog.com/","type":"rich","image_url":null,"version":"1.0","author_name":"falsandtru","description":"TypeScript 2.8\u3067\u8ffd\u52a0\u4e88\u5b9a\u306eConditional\u578b\u3068infer prefix\u304c\u958b\u767a\u7248\u3067\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f\u306e\u3067\u578b\u30ec\u30d9\u30eb\u95a2\u6570\u3068\u5ff5\u9858\u306eRequired/DeepRequired\u578b\u3092\u4f5c\u3063\u3066\u578b\u30ec\u30d9\u30eb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002 \u578b\u30ec\u30d9\u30eb\u95a2\u6570 Conditional\u578b\u306fUnion\u578b\u3092\u5c55\u958b\u3059\u308b\u305f\u3081Eq<false, boolean>\u306e\u7d50\u679c\u306f\u305d\u306e\u975e\u6c7a\u5b9a\u6027\u304b\u3089boolean\u3068\u306a\u308b\u3002\u6c7a\u5b9a\u7684\u306a\u7d50\u679c\u3092\u8fd4\u3059\u95a2\u6570\u306fboolean\u578b\u306b\u306e\u307f\u7528\u610f\u3057\u3066\u304a\u308aDEq<false, boolean>\u306fundefined\u3068\u306a\u308b\u3002 type Falsy = undefined | false | 0 | '' | null | \u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffalsandtru.hatenablog.com%2Fentry%2Ftype-level-typescript\" title=\"TypeScript\u3067\u578b\u30ec\u30d9\u30eb\u95a2\u6570\u3068Required/DeepRequired\u578b\u3092\u4f5c\u3063\u3066\u578b\u30ec\u30d9\u30eb\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 - falsandtru\u306e\u30e1\u30e2\u5e33\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}