【Svelte Framework入門】Svelteアプリ開発でrollup.jsからViteに移行する

            
            $ yarn create vite
yarn create v1.22.17
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Installed "create-vite@3.0.0" with binaries:
      - create-vite
      - cva
✔ Project name: … svelte-vite
✔ Select a framework: › svelte
✔ Select a variant: › svelte-ts

Scaffolding project in /usr/src/app/svelte-vite...

Done. Now run:

  cd svelte-vite
  yarn
  yarn dev

Done in 11.04s.
        

            
            $ cd svelte-vite
$ yarn
$ yarn dev
        

            
            version: '3'

services:
  #...中略
  app:
    ports:
    #👇追加
      - "5173:5173"
#...以下略
        

            
            {
  //...中略
  "scripts": {
    "dev": "vite --host 0.0.0.0",
    //...以下略
        

            
            $ yarn dev
vite

  VITE v3.0.1  ready in 616 ms

  ➜  Local:   http://localhost:5173/
  ➜  Network: http://192.168.0.2:5173/
        

            
            $ vite --host 0.0.0.0 --port [開放先のポート番号]
        

            
            $ vite --help
#もしくは
$ ./node_modules/.bin/vite --help
        

            
            $ yarn add sass postcss autoprefixer -D
        

            
            :root {
    font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 24px;
    font-weight: 400;

    color-scheme: light dark;
    color: rgba(255, 255, 255, 0.87);
    background-color: #242424;
    @media (prefers-color-scheme: light) {
        color: #213547;
        background-color: #ffffff;
    }

    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    display: flex;
    place-items: center;
    min-width: 320px;
    min-height: 100vh;
    a {
        font-weight: 500;
        color: #646cff;
        text-decoration: inherit;
        &:hover {
        color: #535bf2;
        @media (prefers-color-scheme: light) { color: #747bff; }
        }
    }
}

#app {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
    h1 {
        font-size: 3.2em;
        line-height: 1.1;
    }
    .card { padding: 2em; }
    button {
        border-radius: 8px;
        border: 1px solid transparent;
        padding: 0.6em 1.2em;
        font-size: 1em;
        font-weight: 500;
        font-family: inherit;
        background-color: #1a1a1a;
        @media (prefers-color-scheme: light) { background-color: #f9f9f9; }
        cursor: pointer;
        transition: border-color 0.25s;
        &:hover { border-color: #646cff; }
        &:focus, &:focus-visible { outline: 4px auto -webkit-focus-ring-color; }
    }
}
        

            
            import autoprefixer from 'autoprefixer'

export default {
    plugins:[autoprefixer]
}
        

            
            import { defineConfig } from 'vite';
import { svelte } from '@sveltejs/vite-plugin-svelte';
//👇追記
import postcss from './postcss.config.js';

export default defineConfig({
    plugins: [svelte()],
    //👇追記
    css: {postcss}
})