// sample.ts
import { ref } from 'vue'

export const useSample = () => {
  const count = ref(0)
  const increment = () => { count += 1 }

  return {
    count,
    increment
  }
}

<script lang="ts" setup>
import { useSample } from './sample'

const { count, increment } = useSample()

count.value = 100 // (1)
</script>

<template>
  <div>
    <div>{{ count }}</div>
    <button type="button" @click="increment">increment</button>
  </div>
</template>

import { computed, ref } from 'vue'

export const useSample = () => {
  const count = ref(0)
  const increment = () => { count += 1 }

  return {
    count: computed(() => count.value),
    increment
  }
}

package main

import (
	"context"
	"os"

	secretManager "cloud.google.com/go/secretmanager/apiv1"
	secretManagerPB "google.golang.org/genproto/googleapis/cloud/secretmanager/v1"
)

func FetchPassword() string {
	// Cloud Run のみに存在する環境変数をチェックして
	_, ok := os.LookupEnv("K_SERVICE")
	if !ok {
		// 未設定の場合には環境変数から取得
		return os.Getenv("PASSWORD")
	}

	// 設定されている場合には Secret Manager にアクセス
	ctx := context.Background()
	c, _ := secretManager.Client(ctx)
	r := &secretManagerPB.AccessSecretVersionRequest{ Name: "1" }
	s, _ := c.AccessSecretVersion(ctx, r)
	return s.Payload.Data
}

.
|- src
|  |- index.ts
|  `- sample.node
|- package.json
|- tsconfig.json
`- yarn.lock

import { sample } from './sample.node'

sample()

declare module "*.node" {
  export function sample(): string;
}

// import {} from './sample.node' の時に使われる
declare module "*sample.node" {
  export function sample(): string;
}

// import {} from './foobar.node' の時に使われる
declare module "*foobar.node" {
  export function foobar(): string;
}

$ ./node_modules/.bin/cmake-js compile

.
|- lib
|  `- binding.js
|- node_modules
|- package.json
|- src
|  `- hello_world.cc
|- test
|  `- test_binding.js
|- CMakeLists.txt
`- yarn.lock

.
|- build
|  |- Release
|  |  `- out.node
|  `- (省略)
|- lib
|  `- binding.js
|- node_modules
|- package.json
|- src
|  `- hello_world.cc
|- test
|  `- test_binding.js
|- CMakeLists.txt
`- yarn.lock

.
|- cmake-build-debug
|  |- Release
|  |  `- out.node
|  `- (省略)
|- lib
|  `- binding.js
|- node_modules
|- package.json
|- src
|  `- hello_world.cc
|- test
|  `- test_binding.js
|- CMakeLists.txt
`- yarn.lock

set PATH="C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\CommonExtensions\Microsoft\TeamFoundation\TeamExplorer\Git\cmd";%PATH%

git version 2.33.0.windows.1

package main

import (
	"encoding/csv"
	"log"
	"os"
)

func main() {
	f, err := os.Open("sample.csv")
	if err != nil {
		log.Fatalln("Open failed", err)
	}

	b := make([]byte, 3)
	_, err = f.Read(b)
	if err != nil {
		log.Fatalln("Read failed", err)
	}

	if !(b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xEF) {
		f.Seek(0, os.SEEK_SET)
	}

	r := csv.NewReader(f)
	rs, err := r.ReadAll()
	if err != nil {
		log.Fatalln("CSV Reader read failed", err)
	}

	log.Printf("%v\n", rs)
}

import SwiftUI

class ViewModel: ObservableObject {
  @Published var message = "aaa"

  init(_ number: Int) {
    Timer.scheduledTimer(withTimeInterval: 3.0, repeats: false) { _ in
      self.message = "bbb"
      print("timer end \(number)")
    }
  }
}

struct MainView: View {
  @ObservedObject var vm: ViewModel

  var body: some View {
    NavigationView {
      Text(message)
        .toolbar {
          ToolbarItem(placement: .navigationBarTrailing) {
            NavigationLink(destination: SubView()) {
              Text("Show")
            }
          }
        }
    }
  }
}

struct SubView: View {
  @ObservedObject var vm: ViewModel

  var body: some View {
    Text("Sub view")
  }
}

  struct MainView: View {
    @ObservedObject var vm: ViewModel
  
    var body: some View {
      NavigationView {
-       Text(message)
-         .toolbar {
-           ToolbarItem(placement: .navigationBarTrailing) {
-             NavigationLink(destination: SubView()) {
-               Text("Show")
-             }
-           }
-         }
+       VStack {
+         Text(message)
+         NavigationLink(destination: SubView()) {
+           Text("Show")
+         }
+       }
      }
    }
  }

android {
    defaultConfig {
        targetSdkVersion(29)
    }
}

android {
    defaultConfig {
        targetSdkVersion(29)
    }
    testOptions {
        defaultConfig {
            targetSdkVersion(28)
        }
    }
}

android {
    defaultConfig {
        targetSdkVersion(29)
    }
    testOptions {
        unitTests {
            defaultConfig {
                targetSdkVersion(28)
            }
        }
    }
}

$ open /path/to/node

<body>
  <div id="app">
    <span>Loading...</span>
  </div>
</body>

new Vue({
  el: '#app',
  render(h) {
    return h('div', 'Hello, World!');
  }
});

<body>
  <div>Hello, World!</div>
</body>

ReactDOM.render(
  React.createElement('div', null, 'Hello, World!'),
  document.querySelector('#app')
);

<body>
  <div id="app"><div>Hello, World!</div></div>
</body>