1つのExpoコードベースから複数アプリをEASでデプロイする設計パターン

import type { ExpoConfig } from "expo/config";
import fs from "node:fs";
import path from "node:path";

const APP_PROJECT = process.env.APP_PROJECT;

if (!APP_PROJECT) {
  throw new Error(
    "APP_PROJECT environment variable is required.\n" +
    "Usage: APP_PROJECT=app-alpha npx expo start"
  );
}

const projectDir = path.resolve(__dirname, "projects", APP_PROJECT);

if (!fs.existsSync(projectDir)) {
  const available = fs.readdirSync(
    path.resolve(__dirname, "projects")
  );
  throw new Error(
    `Project "${APP_PROJECT}" not found.\n` +
    `Available projects: ${available.join(", ")}`
  );
}

// プロジェクト固有の app.json を読み込む
const projectAppJson = JSON.parse(
  fs.readFileSync(path.join(projectDir, "app.json"), "utf-8")
);

// アセットパスをプロジェクトディレクトリからの相対パスに変換
const assetDir = `./projects/${APP_PROJECT}/assets`;

const config: ExpoConfig = {
  ...projectAppJson.expo,
  icon: `${assetDir}/images/icon.png`,
  splash: {
    ...projectAppJson.expo.splash,
    image: `${assetDir}/images/splash.png`,
  },
  android: {
    ...projectAppJson.expo.android,
    adaptiveIcon: {
      ...projectAppJson.expo.android?.adaptiveIcon,
      foregroundImage: `${assetDir}/images/adaptive-icon.png`,
    },
  },
};

export default (): ExpoConfig => config;

#!/bin/bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
MOBILE_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
PROJECTS_DIR="$MOBILE_DIR/projects"

# 使い方を表示
usage() {
  cat <<EOF
Usage:
  $(basename "$0") --all [eas-build-options...]
  $(basename "$0") --projects alpha,beta [eas-build-options...]
  $(basename "$0") --project alpha [eas-build-options...]

Examples:
  $(basename "$0") --all --profile production --platform ios
  $(basename "$0") --projects alpha,beta --profile preview --platform all
  $(basename "$0") --project alpha --profile development --platform ios
EOF
  exit 1
}

# 単一プロジェクトをビルド
build_project() {
  local project="$1"
  shift
  local eas_args=("$@")
  local project_dir="$PROJECTS_DIR/$project"

  if [ ! -d "$project_dir" ]; then
    echo "Error: Project '$project' not found"
    exit 1
  fi

  # eas.json をプロジェクト固有のものに差し替え
  if [ -f "$project_dir/eas.json" ]; then
    cp "$project_dir/eas.json" "$MOBILE_DIR/eas.json"
  fi

  # APP_PROJECT を設定してEASビルドを実行
  cd "$MOBILE_DIR"
  APP_PROJECT="$project" npx eas build "${eas_args[@]}"
}

# 元の eas.json をバックアップ & 復元
trap cleanup EXIT

# 各プロジェクトをビルド
for project in "${PROJECTS[@]}"; do
  build_project "$project" "${EAS_ARGS[@]}"
done

{
  "expo": {
    "name": "My App Alpha",
    "slug": "my-app-alpha",
    "version": "1.0.0",
    "ios": {
      "bundleIdentifier": "com.example.alpha",
      "newArchEnabled": true
    },
    "android": {
      "package": "com.example.alpha",
      "newArchEnabled": true
    },
    "scheme": "myapp-alpha",
    "extra": {
      "eas": {
        "projectId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
      }
    }
  }
}

{
  "build": {
    "development": {
      "developmentClient": true,
      "distribution": "internal",
      "env": { "APP_ENV": "development" }
    },
    "production": {
      "env": { "APP_ENV": "production" }
    }
  },
  "submit": {
    "production": {
      "ios": {
        "appleId": "dev@example.com",
        "ascAppId": "1234567890",
        "appleTeamId": "ABCDE12345"
      }
    }
  }
}

# 特定プロジェクトで開発サーバーを起動
APP_PROJECT=app-alpha npx expo start

# 単一プロジェクト
./scripts/eas-deploy.sh --project app-alpha --profile production --platform ios

# 複数プロジェクトを指定
./scripts/eas-deploy.sh --projects app-alpha,app-beta --profile production --platform ios

# 全プロジェクトに一斉リリース
./scripts/eas-deploy.sh --all --profile production --platform ios

{
  "scripts": {
    "build:alpha:dev": "APP_PROJECT=app-alpha npx eas build --profile development --platform ios",
    "build:alpha:prod": "APP_PROJECT=app-alpha npx eas build --profile production --platform all",
    "build:beta:prod": "APP_PROJECT=app-beta npx eas build --profile production --platform all",
    "build:all:prod": "./scripts/eas-deploy.sh --all --profile production --platform all",
    "start:alpha": "APP_PROJECT=app-alpha npx expo start",
    "start:beta": "APP_PROJECT=app-beta npx expo start"
  }
}

name: EAS Build

on:
  workflow_dispatch:
    inputs:
      projects:
        description: 'Projects to build (comma-separated, or "all")'
        default: 'all'
      profile:
        description: 'Build profile'
        type: choice
        options: [development, preview, production]
      platform:
        description: 'Platform'
        type: choice
        options: [ios, android, all]

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        project: ${{ fromJson(...) }}
    steps:
      - uses: actions/checkout@v4
      - uses: oven-sh/setup-bun@v2
      - uses: expo/expo-github-action@v8

      - run: bun install

      - name: Copy project config
        run: |
          cp projects/${{ matrix.project }}/eas.json ./eas.json
          cp projects/${{ matrix.project }}/.env ./.env

      - name: Build
        run: APP_PROJECT=${{ matrix.project }} npx eas build --non-interactive

APP_PROJECT=app-alpha npx eas update --branch production --message "Bug fix"

const project = process.env.APP_PROJECT || "app-alpha";
const theme = require(`./projects/${project}/theme.js`);

module.exports = {
  content: ["./src/**/*.{js,jsx,ts,tsx}"],
  presets: [require("nativewind/preset")],
  theme: { extend: theme },
  plugins: [],
};

import Constants from "expo-constants";

const projectFeatures: Record<string, { audio: boolean; video: boolean }> = {
  "app-alpha": { audio: true, video: true },
  "app-beta": { audio: true, video: false },
};

const slug = Constants.expoConfig?.slug ?? "app-alpha";

export const Features = projectFeatures[slug] ?? projectFeatures["app-alpha"];