enhance(backend): bundle backend using Rolldown

CHANGELOG.md

@@ -11,6 +11,11 @@
 - Fix: 連合が無効化されたサーバーで一部の設定項目が空欄で表示される問題を修正
 
 ### Server
+- Enhance: メモリ使用量を削減
+- Enhance: 起動の高速化  
+  (Cherry-picked from https://github.com/MisskeyIO/misskey/pull/1410)
+- Enhance: バックエンドの開発モード時の安定性向上
+- Fix: ファイルシステムを用いる処理におけるパスの取り扱いを改善
 - Fix: `/api-doc` にアクセスできない問題を修正
 - Fix: support `alsoKnownAs` from remote actors as either array or unwrapped singleton
 - Fix: ローカルに存在しないリモートアカウントに対するアカウント削除リクエストを受信した際に、そのユーザーを新規作成して削除する挙動を修正

Dockerfile

@@ -102,7 +102,6 @@ COPY --chown=misskey:misskey --from=native-builder /misskey/packages/misskey-js/
 COPY --chown=misskey:misskey --from=native-builder /misskey/packages/misskey-reversi/built ./packages/misskey-reversi/built
 COPY --chown=misskey:misskey --from=native-builder /misskey/packages/misskey-bubble-game/built ./packages/misskey-bubble-game/built
 COPY --chown=misskey:misskey --from=native-builder /misskey/packages/backend/built ./packages/backend/built
-COPY --chown=misskey:misskey --from=native-builder /misskey/packages/backend/src-js ./packages/backend/src-js
 COPY --chown=misskey:misskey --from=native-builder /misskey/packages/i18n/built ./packages/i18n/built
 COPY --chown=misskey:misskey --from=native-builder /misskey/fluent-emojis /misskey/fluent-emojis
 COPY --chown=misskey:misskey . ./

package.json

@@ -28,9 +28,9 @@
 		"build": "pnpm build-pre && pnpm -r build && pnpm build-assets",
 		"build-storybook": "pnpm --filter frontend build-storybook",
 		"build-misskey-js-with-types": "pnpm build-pre && pnpm --filter backend... --filter=!misskey-js build && pnpm --filter backend generate-api-json --no-build && ncp packages/backend/built/api.json packages/misskey-js/generator/api.json && pnpm --filter misskey-js update-autogen-code && pnpm --filter misskey-js build && pnpm --filter misskey-js api",
-		"start": "cd packages/backend && pnpm compile-config && node ./built/boot/entry.js",
-		"start:inspect": "cd packages/backend && pnpm compile-config && node --inspect ./built/boot/entry.js",
-		"start:test": "ncp ./.github/misskey/test.yml ./.config/test.yml && cd packages/backend && cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./built/boot/entry.js",
+		"start": "cd packages/backend && pnpm compile-config && node ./built/entry.js",
+		"start:inspect": "cd packages/backend && pnpm compile-config && node --inspect ./built/entry.js",
+		"start:test": "ncp ./.github/misskey/test.yml ./.config/test.yml && cd packages/backend && cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./built/entry.js",
 		"cli": "cd packages/backend && pnpm cli",
 		"init": "pnpm migrate",
 		"migrate": "cd packages/backend && pnpm migrate",

packages/backend/ormconfig.js

@@ -1,6 +1,6 @@
 import { DataSource } from 'typeorm';
-import { loadConfig } from './src-js/config.js';
-import { entities } from './src-js/postgres.js';
+import { loadConfig } from './built/config.js';
+import { entities } from './built/postgres.js';
 
 const isConcurrentIndexMigrationEnabled = process.env.MISSKEY_MIGRATION_CREATE_INDEX_CONCURRENTLY === '1';
 

packages/backend/package.json

@@ -7,21 +7,22 @@
 		"node": "^22.15.0 || ^24.10.0"
 	},
 	"scripts": {
-		"start": "pnpm compile-config && node ./built/boot/entry.js",
-		"start:inspect": "pnpm compile-config && node --inspect ./built/boot/entry.js",
-		"start:test": "cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./built/boot/entry.js",
+		"start": "pnpm compile-config && node ./built/entry.js",
+		"start:inspect": "pnpm compile-config && node --inspect ./built/entry.js",
+		"start:test": "cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./built/entry.js",
 		"migrate": "pnpm compile-config && pnpm typeorm migration:run -d ormconfig.js",
 		"revert": "pnpm compile-config && pnpm typeorm migration:revert -d ormconfig.js",
-		"cli": "pnpm compile-config && node ./src-js/boot/cli.js",
+		"cli": "pnpm compile-config && node ./built/cli.js",
 		"check:connect": "pnpm compile-config && node ./scripts/check_connect.js",
 		"compile-config": "node ./scripts/compile_config.js",
-		"build": "swc src -d src-js -D --strip-leading-paths && node ./build.js",
-		"build:test": "swc test-server -d built-test -D --config-file test-server/.swcrc --strip-leading-paths",
+		"build": "rolldown -c",
+		"build:unit": "rolldown -c --sourcemap",
+		"build:e2e": "swc src -d src-js -D --strip-leading-paths && swc test-server -d built-test -D --config-file test-server/.swcrc --strip-leading-paths",
 		"watch:swc": "swc src -d built -D -w --strip-leading-paths",
 		"build:tsc": "tsgo -p tsconfig.json && tsc-alias -p tsconfig.json",
 		"watch": "pnpm compile-config && node ./scripts/watch.mjs",
 		"restart": "pnpm build && pnpm start",
-		"dev": "pnpm compile-config && node ./scripts/dev.mjs",
+		"dev": "pnpm compile-config && rolldown -c --watch",
 		"typecheck": "tsgo --noEmit && tsgo -p test --noEmit && tsgo -p test-federation --noEmit",
 		"eslint": "eslint --quiet \"{src,test-federation}/**/*.ts\"",
 		"lint": "pnpm typecheck && pnpm eslint",
@@ -31,11 +32,11 @@
 		"jest-and-coverage": "cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./jest.js --coverage --forceExit --config jest.config.unit.cjs",
 		"jest-and-coverage:e2e": "cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./jest.js --coverage --forceExit --config jest.config.e2e.cjs",
 		"jest-clear": "cross-env NODE_ENV=test pnpm compile-config && cross-env NODE_ENV=test node ./jest.js --clearCache",
-		"test": "pnpm jest",
-		"test:e2e": "pnpm build && pnpm build:test && pnpm jest:e2e",
+		"test": "pnpm build:unit && pnpm jest",
+		"test:e2e": "pnpm build:e2e && pnpm jest:e2e",
 		"test:fed": "pnpm jest:fed",
-		"test-and-coverage": "pnpm jest-and-coverage",
-		"test-and-coverage:e2e": "pnpm build && pnpm build:test && pnpm jest-and-coverage:e2e",
+		"test-and-coverage": "pnpm build:unit && pnpm jest-and-coverage",
+		"test-and-coverage:e2e": "pnpm build:e2e && pnpm jest-and-coverage:e2e",
 		"check-migrations": "node scripts/check_migrations_clean.js",
 		"generate-api-json": "pnpm compile-config && node ./scripts/generate_api_json.js"
 	},
@@ -179,6 +180,7 @@
 		"@jest/globals": "29.7.0",
 		"@kitajs/ts-html-plugin": "4.1.4",
 		"@nestjs/platform-express": "11.1.18",
+		"@rollup/plugin-esm-shim": "0.1.8",
 		"@sentry/vue": "10.47.0",
 		"@simplewebauthn/types": "12.0.0",
 		"@swc/jest": "0.2.39",
@@ -217,15 +219,14 @@
 		"aws-sdk-client-mock": "4.1.0",
 		"cbor": "10.0.12",
 		"cross-env": "10.1.0",
-		"esbuild-plugin-swc": "1.0.1",
 		"eslint-plugin-import": "2.32.0",
 		"execa": "9.6.1",
 		"fkill": "10.0.3",
 		"jest": "29.7.0",
 		"jest-mock": "29.7.0",
 		"js-yaml": "4.1.1",
-		"nodemon": "3.1.14",
 		"pid-port": "2.1.1",
+		"rolldown": "1.0.0-rc.15",
 		"simple-oauth2": "5.1.0",
 		"supertest": "7.2.2",
 		"vite": "8.0.7"

packages/backend/rolldown.config.ts

@@ -0,0 +1,107 @@
+import { defineConfig } from 'rolldown';
+import type { Plugin, ExternalOption } from 'rolldown';
+import { execa, execaNode } from 'execa';
+import type { ResultPromise } from 'execa';
+import esmShim from '@rollup/plugin-esm-shim';
+
+/**
+ * Watchモード時にバックエンドの起動・停止制御を行うプラグイン
+ */
+function backendDevServerPlugin(): Plugin {
+	let backendProcess: ResultPromise | null = null;
+
+	async function runBuildAssets() {
+		await execa('pnpm', ['run', 'build-assets'], {
+			cwd: '../../',
+			stdout: process.stdout,
+			stderr: process.stderr,
+		});
+	}
+
+	async function killBackendProcess() {
+		if (backendProcess) {
+			backendProcess.catch(() => {}); // backendProcess.kill()によって発生する例外を無視するためにcatch()を呼び出す
+			backendProcess.kill();
+			await new Promise(resolve => backendProcess!.on('exit', resolve));
+			backendProcess = null;
+		}
+	}
+
+	return {
+		name: 'backend-dev-server',
+		async closeBundle() {
+			await runBuildAssets();
+			if (backendProcess) {
+				await killBackendProcess();
+			}
+			backendProcess = execaNode('./built/entry.js', {
+				stdout: process.stdout,
+				stderr: process.stderr,
+				env: {
+					NODE_ENV: 'development',
+				},
+			});
+		},
+		async watchChange() {
+			if (backendProcess) {
+				await killBackendProcess();
+				await runBuildAssets();
+			}
+		},
+	};
+}
+
+export default defineConfig((args) => {
+	const isWatchMode = args.watch != null && args.watch !== 'false';
+
+	// 通常のビルド時にexternalとするモジュール
+	const externalModules: ExternalOption = [
+		/^slacc-.*/,
+		'class-transformer',
+		'class-validator',
+		/^@sentry\/.*/,
+		/^@sentry-internal\/.*/,
+		'@nestjs/websockets/socket-module',
+		'@nestjs/microservices/microservices-module',
+		'@nestjs/microservices',
+		/^@napi-rs\/.*/,
+		'mock-aws-s3',
+		'aws-sdk',
+		'nock',
+		'sharp',
+		'jsdom',
+		're2',
+		'ipaddr.js',
+		'oauth2orize',
+	];
+
+	return {
+		input: [
+			'./src/boot/entry.ts',
+			'./src/boot/cli.ts',
+			'./src/config.ts',
+			'./src/postgres.ts',
+			'./src/server/api/openapi/gen-spec.ts',
+		],
+		platform: 'node',
+		tsconfig: true,
+		plugins: [
+			esmShim(),
+			(isWatchMode ? backendDevServerPlugin() : undefined),
+		],
+		output: {
+			keepNames: true,
+			minify: !isWatchMode,
+			sourcemap: isWatchMode,
+			dir: './built',
+			cleanDir: !isWatchMode,
+			format: 'esm',
+		},
+		watch: {
+			include: ['src/**/*.{ts,js,mjs,cjs,tsx,json}'],
+			clearScreen: false,
+		},
+		// ビルドの高速化のために、watchモードのときは外部モジュールは全てバンドルしないようにする
+		external: isWatchMode ? [/node_modules/] : externalModules,
+	};
+});

packages/backend/scripts/check_connect.js

@@ -4,8 +4,8 @@
  */
 
 import Redis from 'ioredis';
-import { loadConfig } from '../src-js/config.js';
-import { createPostgresDataSource } from '../src-js/postgres.js';
+import { loadConfig } from '../built/config.js';
+import { createPostgresDataSource } from '../built/postgres.js';
 
 const config = loadConfig();