{"image_url":null,"provider_url":"https://hatena.blog","width":"100%","published":"2021-11-14 02:52:59","blog_title":"emahiro/b.log","title":"TypeScript \u3067\u96c6\u5408\u95a2\u4fc2\u306b\u3042\u308b\u578b\u306e\u5024\u306e\u518d\u4ee3\u5165\u3092\u3059\u308b","blog_url":"https://ema-hiro.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fema-hiro.hatenablog.com%2Fentry%2F2021%2F11%2F14%2F025259\" title=\"TypeScript \u3067\u96c6\u5408\u95a2\u4fc2\u306b\u3042\u308b\u578b\u306e\u5024\u306e\u518d\u4ee3\u5165\u3092\u3059\u308b - emahiro/b.log\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["TypeScript"],"url":"https://ema-hiro.hatenablog.com/entry/2021/11/14/025259","type":"rich","version":"1.0","height":"190","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/ema_hiro/","description":"Overview \u4ee5\u4e0b\u306e\u3088\u3046\u306a\u96c6\u5408\u95a2\u4fc2\u306b\u3042\u308b2\u3064\u306e\u578b\u306e\u9593\u3067\u5024\u306e\u518d\u4ee3\u5165\u3092\u3057\u305f\u3044\u30b1\u30fc\u30b9\u3067\u30cf\u30de\u3063\u3066\u3057\u307e\u3044\u3001\u540c\u50da\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u624b\u4f1d\u3063\u3066\u3082\u3089\u3063\u3066\u4e00\u5b9a\u306e\u65b9\u91dd\u3067\u89e3\u6c7a\u3057\u305f\u306e\u3067\u305d\u306e\u5099\u5fd8\u9332\u3067\u3059\u3002 type ObjA = { a: number; b: string; } type ObjB = { a: number; b: string; c: string; } \u3053\u306e2\u3064\u306e\u95a2\u4fc2\u306f\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u96c6\u5408\u95a2\u4fc2\u306b\u3042\u308a ObjB \u306f ObjA \u3068\u3057\u3066\u632f\u308b\u821e\u3046\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 \u8abf\u3079\u305f\u3053\u3068 \u5b58\u5728\u3057\u306a\u3044\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3066 never \u578b\u306b\u30a2\u30b5\u30a4\u30f3\u3057\u3088\u3046\u3068\u3057\u3066\u578b\u30a8\u30e9\u30fc\u306b\u306a\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308b \u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5b9f\u88c5\u3067\u306f\u5024\u306e\u518d\u4ee3\u5165\u2026","author_name":"ema_hiro"}