areas.ts

export const areas = [
  {
    name: "甲府市",
    url: "https://ja.wttr.in/%E7%94%B2%E5%BA%9C?format=j1",
  },
  {
    name: "北杜市",
    url: "https://ja.wttr.in/%E5%8C%97%E6%9D%9C%E5%B8%82?format=j1",
  },
  {
    name: "南アルプス市",
    url:
      "https://ja.wttr.in/%E5%8D%97%E3%82%A2%E3%83%AB%E3%83%97%E3%82%B9%E5%B8%82?format=j1",
  },
  {
    name: "勝沼町",
    url: "https://ja.wttr.in/%E5%8B%9D%E6%B2%BC%E7%94%BA?format=j1",
  },
  {
    name: "大月市",
    url: "https://ja.wttr.in/%E5%A4%A7%E6%9C%88%E5%B8%82?format=j1",
  },
  {
    name: "身延町",
    url: "https://ja.wttr.in/%E8%BA%AB%E5%BB%B6%E7%94%BA?format=j1",
  },
  {
    name: "南部町",
    url: "https://ja.wttr.in/%E5%8D%97%E9%83%A8%E7%94%BA?format=j1",
  },
];

wether.ts

import { areas } from "https://gist.githubusercontent.com/Comamoca/9ef3b040c59e084e42a832517b55d5e3/raw/45d2af219afcfad94c40086500a1659db03aba5c/areas.ts";

interface Area {
  name: string;
  url: string;
}

interface Wether {
  wether: string;
  temp: string;
  humidity: string;
  feelsLike: string;
}

interface AreaWether {
  name: string;
  url: string;
  wether: Wether;
}

async function getWether(url: string): Promise<Wether> {
  const responce = await fetch(url);
  const data = await responce.json();

  let wether = data.current_condition[0].lang_ja[0].value;
  wether = wether.replace("驟雨", "にわか雨");

  const result: Wether = {
    wether: wether,
    temp: data.current_condition[0].temp_C,
    humidity: data.current_condition[0].humidity,
    feelsLike: data.current_condition[0].FeelsLikeC,
  };

  return result;
}

async function getAreaWether(areas: Array<Area>): Promise<Array<AreaWether>> {
  const areaData: Array<AreaWether> = [];
  for (const area of areas) {
    const data = await getWether(area.url);
    areaData.push(
      {
        name: area.name as string,
        url: area.url as string,
        wether: data as Wether,
      },
    );
  }

  return areaData;
}

console.log(await getAreaWether(areas));