{"id":48746207,"url":"https://github.com/lemoncloud-io/eureka-flow","last_synced_at":"2026-05-07T06:12:51.307Z","repository":{"id":343875434,"uuid":"1179486904","full_name":"lemoncloud-io/eureka-flow","owner":"lemoncloud-io","description":"Visual Workflow Editor for Building Data Flow 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returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2026-04-12T11:51:38.018Z","updated_at":"2026-04-12T11:51:38.780Z","avatar_url":"https://github.com/lemoncloud-io.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"\u003cp align=\"center\"\u003e\n  \u003cimg src=\"docs/images/logo.png\" alt=\"Eureka Flow Logo\" width=\"120\" /\u003e\n\u003c/p\u003e\n\n\u003ch1 align=\"center\"\u003eEureka Flow\u003c/h1\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003cstrong\u003eVisual Workflow Editor for Building Data Flow Pipelines\u003c/strong\u003e\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003cimg src=\"https://img.shields.io/badge/React-19-61DAFB?logo=react\u0026logoColor=white\u0026style=flat-square\" alt=\"React 19\" /\u003e\n  \u003cimg src=\"https://img.shields.io/badge/TypeScript-5.9-3178C6?logo=typescript\u0026logoColor=white\u0026style=flat-square\" alt=\"TypeScript 5.9\" /\u003e\n  \u003cimg src=\"https://img.shields.io/badge/Vite-7-646CFF?logo=vite\u0026logoColor=white\u0026style=flat-square\" alt=\"Vite 7\" /\u003e\n  \u003cimg src=\"https://img.shields.io/badge/Nx-22-143055?logo=nx\u0026logoColor=white\u0026style=flat-square\" alt=\"Nx 22\" /\u003e\n  \u003cimg src=\"https://img.shields.io/badge/License-Apache_2.0-blue?style=flat-square\" alt=\"Apache 2.0 License\" /\u003e\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003ca href=\"https://flow.eureka.codes\"\u003e\u003cstrong\u003eLive Demo\u003c/strong\u003e\u003c/a\u003e \u0026middot;\n  \u003ca href=\"#key-features\"\u003eFeatures\u003c/a\u003e \u0026middot;\n  \u003ca href=\"#screenshots\"\u003eScreenshots\u003c/a\u003e \u0026middot;\n  \u003ca href=\"#getting-started\"\u003eGetting Started\u003c/a\u003e \u0026middot;\n  \u003ca href=\"#architecture\"\u003eArchitecture\u003c/a\u003e \u0026middot;\n  \u003ca href=\"#contributing\"\u003eContributing\u003c/a\u003e\n\u003c/p\u003e\n\n---\n\n## Overview\n\n**Eureka Flow** is a powerful, browser-based visual workflow editor for creating and executing data processing pipelines. Build complex workflows by connecting pre-built blocks, execute them in real-time, and monitor execution status through WebSocket-based live updates.\n\n\u003e [!TIP]\n\u003e **Try it now** — Visit **[flow.eureka.codes](https://flow.eureka.codes)** to start building workflows instantly.\n\u003e Get your API key from [Eureka Codes Console](https://console.eureka.codes) with just one click.\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eTable of Contents\u003c/strong\u003e\u003c/summary\u003e\n\n- [Overview](#overview)\n- [Key Features](#key-features)\n- [Screenshots](#screenshots)\n- [Tech Stack](#tech-stack)\n- [Architecture](#architecture)\n- [Getting Started](#getting-started)\n- [Development](#development)\n- [Building \u0026 Deployment](#building--deployment)\n- [Code Style](#code-style)\n- [Contributing](#contributing)\n- [Related Projects](#related-projects)\n- [License](#license)\n\n\u003c/details\u003e\n\n## Key Features\n\n- **Drag-and-drop editor** — Node placement on an infinite canvas with pan, zoom, and multi-select\n- **100+ pre-built blocks** — Organized by category (input, process, output) with configurable parameters\n- **Dual execution modes** — Frontend blocks for instant feedback, backend blocks for heavy computation\n- **Real-time updates** — WebSocket integration for live node execution status tracking\n- **Bezier curve connections** — Port-based typed connections between nodes\n- **Undo/Redo** — Full history management with auto-layout algorithm\n- **Touch gesture support** — Tablet and mobile device compatibility\n- **Dark/Light theme** — System preference detection with manual toggle\n- **i18n** — English \u0026 Korean language support\n- **Auto-save** — Configurable toggle with LocalStorage session continuity\n- **One-click API key** — Secure postMessage-based key transfer from [Eureka Codes Console](https://console.eureka.codes)\n\n## Screenshots\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\"\u003e\u003cstrong\u003eDark Mode\u003c/strong\u003e\u003c/td\u003e\n\u003ctd align=\"center\"\u003e\u003cstrong\u003eLight Mode\u003c/strong\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"docs/images/screenshot-dark.jpg\" alt=\"Eureka Flow - Dark Mode\" width=\"480\" /\u003e\u003c/td\u003e\n\u003ctd\u003e\u003cimg src=\"docs/images/screenshot-light.jpg\" alt=\"Eureka Flow - Light Mode\" width=\"480\" /\u003e\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/table\u003e\n\n## Tech Stack\n\n| Category      | Technology                           |\n| ------------- | ------------------------------------ |\n| **Framework** | React 19                             |\n| **Language**  | TypeScript 5.9 (strict mode)         |\n| **Build**     | Vite 7, Nx 22                        |\n| **Styling**   | Tailwind CSS 3, Radix UI (shadcn/ui) |\n| **State**     | Zustand 5, TanStack Query 5          |\n| **Real-time** | WebSocket with self-echo prevention  |\n| **Testing**   | Vitest                               |\n\n## Architecture\n\n```mermaid\ngraph TB\n    subgraph App\n        WEB[\"apps/web\u003cbr/\u003eReact Web App\u003cbr/\u003e\u003ci\u003e:3000\u003c/i\u003e\"]\n    end\n\n    subgraph Core[\"Core Libraries\"]\n        WEBCORE[\"web-core\u003cbr/\u003eAuth \u0026 API Client\"]\n        UIKIT[\"ui-kit\u003cbr/\u003e33 Radix Components\"]\n        SHARED[\"shared\u003cbr/\u003eErrorFallback, Loader\"]\n        THEME[\"theme\u003cbr/\u003eDark / Light Mode\"]\n    end\n\n    subgraph Features[\"Feature Libraries\"]\n        FLOWS[\"flows\u003cbr/\u003eEditor Logic \u0026 Stores\"]\n        SOCKET[\"socket\u003cbr/\u003eWebSocket Layer\"]\n    end\n\n    WEB --\u003e WEBCORE \u0026 UIKIT \u0026 SHARED \u0026 THEME\n    WEB --\u003e FLOWS \u0026 SOCKET\n    FLOWS --\u003e WEBCORE\n    SOCKET --\u003e WEBCORE\n```\n\n### Project Structure\n\n```\neureka-flow/\n├── apps/\n│   └── web/                    # React web application\n├── libs/\n│   ├── flows/                  # Flow editor core (API, hooks, stores, types)\n│   ├── socket/                 # WebSocket layer for real-time updates\n│   ├── web-core/               # HTTP client, auth state, error handling\n│   ├── ui-kit/                 # 33 shadcn/ui components (Radix UI)\n│   ├── shared/                 # Common components (ErrorFallback, ApiKeyDialog)\n│   └── theme/                  # Dark/light theme provider\n├── scripts/                    # Build and deployment scripts\n└── .github/                    # CI/CD workflows\n```\n\n### State Management\n\nFour Zustand stores manage different concerns:\n\n| Store               | Purpose                                            |\n| ------------------- | -------------------------------------------------- |\n| `useCanvasStore`    | Canvas UI: nodes, connections, viewport, selection |\n| `useFlowsStore`     | Flow metadata: blockRegistry, flowName, saveStatus |\n| `useWebSocketStore` | WebSocket: connectionStatus, subscribers           |\n| `useWebCoreStore`   | Auth: apiKey, isAuthenticated, profile             |\n\n### Data Flow\n\n```\nFlowEditorPage (orchestrator)\n├── useFlows hook (flow CRUD operations)\n├── useBlocks hook (block registry loading)\n├── useInitFlowSocket hook (WebSocket callbacks)\n│\n├── Header (file operations, save status)\n├── Sidebar (block library by category)\n├── WorkflowCanvas (imperative canvas ref)\n│   ├── NodeBlock (status: IDLE → READY → RUNNING → COMPLETED/ERROR)\n│   ├── ConnectionLine (SVG bezier curves)\n│   └── useCanvasStore (nodes, connections)\n└── DetailPanel (selected node configuration)\n```\n\n### Node Execution\n\n| Mode         | Description           | Flow                                                  |\n| ------------ | --------------------- | ----------------------------------------------------- |\n| **Frontend** | Executes in browser   | `EXECUTE_FUNCTIONS[type]` → `runNode(id, { output })` |\n| **Backend**  | Server-side execution | `runNode(id)` → WebSocket notification → UI refresh   |\n\n### Path Aliases\n\n```typescript\n@flows/flows      // libs/flows/src/index.ts\n@flows/socket     // libs/socket/src/index.ts\n@flows/web-core   // libs/web-core/src/index.ts\n@flows/ui-kit     // libs/ui-kit/src/index.ts\n@flows/shared     // libs/shared/src/index.ts\n@flows/theme      // libs/theme/src/index.ts\n@flows/lib/utils  // libs/ui-kit/src/utils/index.ts\n```\n\n## Getting Started\n\n### Prerequisites\n\n| Tool        | Version  | Notes                                |\n| ----------- | -------- | ------------------------------------ |\n| **Node.js** | v22.15.1 | Use `nvm use` — `.nvmrc` is included |\n| **Yarn**    | 1.22+    | Classic Yarn                         |\n\n### Installation\n\n```bash\n# Clone the repository\ngit clone https://github.com/lemoncloud-io/eureka-flow.git\ncd eureka-flow\n\n# Use the correct Node version\nnvm use\n\n# Install dependencies\nyarn install\n\n# Copy environment template\ncp .env.example .env.local\n\n# Start development server\nyarn web:start\n```\n\nThe app will be available at `http://localhost:3000`.\n\n### Using the Live Service\n\n1. Visit **[flow.eureka.codes](https://flow.eureka.codes)**\n2. Click \"Create New Key\" to open the [Eureka Codes Console](https://console.eureka.codes)\n3. Sign in and generate your API key\n4. The key is automatically transferred back to Eureka Flow\n5. Start building your workflows!\n\n## Development\n\n```bash\n# Development\nyarn web:start              # Start dev server on port 3000\nyarn lint                   # Run ESLint\nyarn lint:fix               # Run ESLint with auto-fix\nyarn prettier               # Format code with Prettier\n\n# Testing\nyarn web:test               # Run tests\n\n# Utilities\nyarn clean:cache            # Clear build caches\nyarn graph                  # View Nx dependency graph\n```\n\n\u003e [!TIP]\n\u003e Run `yarn graph` to visualize the dependency graph of all libraries.\n\n## Building \u0026 Deployment\n\n### Build\n\n```bash\nyarn web:build              # Build web application\nyarn web:build:dev          # Build for development environment\nyarn web:build:prod         # Build for production environment\n```\n\n### Deploy\n\nDeployment uses AWS S3 + CloudFront:\n\n```bash\nyarn web:deploy:dev         # Deploy to DEV\nyarn web:deploy:prod        # Deploy to PROD\n```\n\n\u003e [!WARNING]\n\u003e Local deployment requires `.env.deploy` configuration. Copy from `.env.deploy.example` and fill in your AWS settings.\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eEnvironment Variables\u003c/strong\u003e\u003c/summary\u003e\n\n**App configuration** (`apps/web/.env.*`):\n\n| Variable           | Description                              |\n| ------------------ | ---------------------------------------- |\n| `VITE_ENV`         | Environment identifier (`DEV` or `PROD`) |\n| `VITE_PROJECT`     | Project name (`FLOWS`)                   |\n| `VITE_API_URL`     | API endpoint URL                         |\n| `VITE_WS_ENDPOINT` | WebSocket endpoint URL                   |\n| `VITE_CODES_URL`   | Eureka Codes console URL                 |\n\n**AWS deployment** (`.env.deploy`):\n\n| Variable                  | Description                         |\n| ------------------------- | ----------------------------------- |\n| `AWS_PROFILE_NAME`        | AWS CLI profile name                |\n| `BUCKET_NAME`             | S3 bucket name for deployment       |\n| `DEV_CF_DISTRIBUTION_ID`  | CloudFront distribution ID for DEV  |\n| `PROD_CF_DISTRIBUTION_ID` | CloudFront distribution ID for PROD |\n\n\u003c/details\u003e\n\n### CI/CD\n\nGitHub Actions workflows are configured for automated deployment:\n\n| Workflow           | Trigger           | Description                                   |\n| ------------------ | ----------------- | --------------------------------------------- |\n| `deploy-dev.yml`   | Push to `develop` | Build \u0026 deploy to DEV                         |\n| `deploy-prod.yml`  | Push to `main`    | Build, deploy to PROD \u0026 create GitHub release |\n| `force-deploy.yml` | Manual dispatch   | Force deploy on demand                        |\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eRequired GitHub Secrets\u003c/strong\u003e\u003c/summary\u003e\n\n| Secret                    | Description            |\n| ------------------------- | ---------------------- |\n| `AWS_ACCESS_KEY_ID`       | AWS access key         |\n| `AWS_SECRET_ACCESS_KEY`   | AWS secret key         |\n| `AWS_DEFAULT_REGION`      | AWS region             |\n| `BUCKET_NAME`             | S3 bucket name         |\n| `DEV_CF_DISTRIBUTION_ID`  | CloudFront ID for DEV  |\n| `PROD_CF_DISTRIBUTION_ID` | CloudFront ID for PROD |\n| `VITE_DEV_API_URL`        | DEV API URL            |\n| `VITE_DEV_WS_ENDPOINT`    | DEV WebSocket URL      |\n| `VITE_DEV_CODES_URL`      | DEV Eureka Codes URL   |\n| `VITE_PROD_API_URL`       | PROD API URL           |\n| `VITE_PROD_WS_ENDPOINT`   | PROD WebSocket URL     |\n| `VITE_PROD_CODES_URL`     | PROD Eureka Codes URL  |\n\n\u003c/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eAPI Key Flow\u003c/strong\u003e\u003c/summary\u003e\n\n```\n┌─────────────────────┐     postMessage      ┌──────────────────────┐\n│    Eureka Flow      │ \u003c──────────────────\u003e │   Eureka Codes       │\n│ (flow.eureka.codes) │      (API Key)       │(console.eureka.codes)│\n└─────────────────────┘                       └──────────────────────┘\n         │                                              │\n         │ 1. Click \"Create New Key\"                    │\n         │ ────────────────────────────────────────────\u003e│\n         │                                              │\n         │                          2. User signs in    │\n         │                             \u0026 creates key    │\n         │                                              │\n         │ 3. API key sent via postMessage              │\n         │ \u003c────────────────────────────────────────────│\n         │                                              │\n         │ 4. State validation for security             │\n         │                                              │\n         ▼\n   Key stored locally\n   Ready to use!\n```\n\n\u003c/details\u003e\n\n## Code Style\n\n- **Named exports only** (no default exports)\n- **Arrow functions**: `const fn = (): Type =\u003e {}`\n- **4-space indentation**, single quotes, ES5 trailing commas\n- **TypeScript strict mode** enabled\n- **ESLint** enforces import ordering (React → `@flows/*` → relative → types)\n\n## Contributing\n\n1. Fork the repository\n2. Create your feature branch (`git checkout -b feature/amazing-feature`)\n3. Commit your changes using [Conventional Commits](https://www.conventionalcommits.org/) (`git commit -m 'feat: add amazing feature'`)\n4. Push to the branch (`git push origin feature/amazing-feature`)\n5. Open a Pull Request\n\n## License\n\nThis project is licensed under the Apache License 2.0. See the [LICENSE](LICENSE) file for details.\n\n---\n\n## Related Projects\n\n- **[Eureka Codes](https://console.eureka.codes)** — API key management and developer console\n- **[Eureka Flows API](https://www.npmjs.com/package/@lemoncloud/eureka-flows-api)** — TypeScript types for the Flows API\n\n---\n\n\u003cp align=\"center\"\u003e\n  Made with 💜 by \u003ca href=\"https://github.com/lemoncloud-io\"\u003eLemonCloud\u003c/a\u003e\n\u003c/p\u003e\n\n\u003cp align=\"center\"\u003e\n  \u003ca href=\"https://lemoncloud.io\"\u003eWebsite\u003c/a\u003e \u0026middot;\n  \u003ca href=\"https://github.com/lemoncloud-io\"\u003eGitHub\u003c/a\u003e\n\u003c/p\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flemoncloud-io%2Feureka-flow","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flemoncloud-io%2Feureka-flow","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flemoncloud-io%2Feureka-flow/lists"}