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rippro
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next.config.js
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next.config.js
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/** @type {import('next').NextConfig} */
// 環境変数から本番ビルドモードかどうかを判断
const isProductionBuild = process.env.BUILD_MODE === 'production';
let basePathEnv = process.env.NEXT_PUBLIC_BASE_PATH || '';
// Normalize: ensure basePathEnv (if present) starts with a leading '/'
if (basePathEnv && !basePathEnv.startsWith('/')) {
basePathEnv = '/' + basePathEnv;
}
const configuredBasePath = basePathEnv || undefined;
// 開発環境でも静的エクスポートに近い動作をさせるために共通設定を定義
const commonConfig = {
// 画像設定
images: {
unoptimized: true // 静的エクスポートでは必須
},
env: {
NEXT_PUBLIC_IS_PRODUCTION_BUILD: String(isProductionBuild),
NEXT_PUBLIC_BASE_PATH: basePathEnv
},
// 開発環境と本番環境の共通設定
staticPageGenerationTimeout: 300
};
const nextConfig = {
// 共通設定を適用
...commonConfig,
// 本番ビルドモード時のみ静的エクスポートを有効化
output: isProductionBuild ? 'export' : undefined,
trailingSlash: isProductionBuild,
// 静的エクスポート時のみ必要な設定
images: {
unoptimized: true
},
typescript: {
ignoreBuildErrors: isProductionBuild
},
basePath: configuredBasePath,
assetPrefix: configuredBasePath
};
console.log(`Building in ${isProductionBuild ? 'PRODUCTION' : 'DEVELOPMENT'} mode`);
module.exports = nextConfig;
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