{"author_url":"https://blog.hatena.ne.jp/thinkAmi/","image_url":null,"published":"2023-06-11 21:18:18","author_name":"thinkAmi","url":"https://thinkami.hatenablog.com/entry/2023/06/11/211818","height":"190","provider_url":"https://hatena.blog","width":"100%","blog_url":"https://thinkami.hatenablog.com/","blog_title":"\u30e1\u30e2\u7684\u306a\u601d\u8003\u7684\u306a","description":"\u95a2\u6570 sumItem \u304c\u3042\u308a\u30012\u3064\u306e\u5f15\u6570\u306e\u578b Item \u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002 export const sumItem = (a: Item, b: Item) => a.unitPrice + b.unitPrice Item\u306e\u578b\u306f export type Item = { name: string, description: string, contents: string, unitPrice: number, note: string, } \u306e\u3088\u3046\u306b\u3001\u3059\u3079\u3066\u5b9a\u7fa9\u304c\u5fc5\u8981\u3060\u3063\u305f\u3068\u3057\u307e\u3059\u3002 \u305d\u3093\u306a\u4e2d\u3001 sumItem \u95a2\u6570\u306b\u5bfe\u3057\u3066\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3092\u5b9a\u7fa9\u3057\u305f\u304f\u306a\u3063\u305f\u3051\u3069\u3001 Item \u578b\u3092\u6301\u3064\u30c6\u30b9\u30c8\u30c7\u30fc\u2026","provider_name":"Hatena Blog","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fthinkami.hatenablog.com%2Fentry%2F2023%2F06%2F11%2F211818\" title=\"TypeScript + Jest \u3067\u3001type\u6587\u3084interface\u5ba3\u8a00\u306b\u3088\u308b\u578b\u304b\u3089\u30e2\u30c3\u30af\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u3063\u3066\u307f\u305f - \u30e1\u30e2\u7684\u306a\u601d\u8003\u7684\u306a\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":"TypeScript + Jest \u3067\u3001type\u6587\u3084interface\u5ba3\u8a00\u306b\u3088\u308b\u578b\u304b\u3089\u30e2\u30c3\u30af\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u3063\u3066\u307f\u305f","categories":["TypeScript","Jest"],"version":"1.0"}