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| 1 | +# lynx-console |
| 2 | + |
| 3 | +An in-app developer console that can be embedded in Lynx apps. View console logs, network requests, and performance metrics in real time. |
| 4 | + |
| 5 | +## Features |
| 6 | + |
| 7 | +- **Console Logs** — View output from `console.log`, `console.error`, and more in real time |
| 8 | +- **Main Thread Console** — Capture logs from the main thread |
| 9 | +- **Network Monitor** — Inspect method, headers, body, and response of `fetch` requests |
| 10 | +- **Performance Monitor** — Track performance metrics such as FCP (First Contentful Paint) |
| 11 | +- **Floating Button** — Open and close the console with a floating button that displays the FCP value |
| 12 | +- **Light/Dark Theme** support |
| 13 | +- **Seed Design** based UI |
| 14 | + |
| 15 | +## Installation |
| 16 | + |
| 17 | +```bash |
| 18 | +yarn add lynx-console |
| 19 | +``` |
| 20 | + |
| 21 | +### Peer Dependencies |
| 22 | + |
| 23 | +```bash |
| 24 | +yarn add @lynx-js/react @lynx-js/types |
| 25 | +``` |
| 26 | + |
| 27 | +## Usage |
| 28 | + |
| 29 | +### 1. Initialize Monitors |
| 30 | + |
| 31 | +Call the monitoring functions at your app's entry point. This setup must run **before** the `LynxConsole` component is rendered. |
| 32 | + |
| 33 | +```typescript |
| 34 | +import { |
| 35 | + initLogMonitor, |
| 36 | + initMainThreadConsole, |
| 37 | + initNetworkMonitor, |
| 38 | + initPerformanceMonitor, |
| 39 | +} from "lynx-console/setup"; |
| 40 | + |
| 41 | +initLogMonitor(); |
| 42 | +initMainThreadConsole(); |
| 43 | +initNetworkMonitor(); |
| 44 | +initPerformanceMonitor(); |
| 45 | +``` |
| 46 | + |
| 47 | +### 2. Render the Component |
| 48 | + |
| 49 | +```tsx |
| 50 | +import LynxConsole from "lynx-console"; |
| 51 | + |
| 52 | +function App() { |
| 53 | + return ( |
| 54 | + <view> |
| 55 | + {/* Your app content */} |
| 56 | + <LynxConsole theme="light" safeAreaInsetBottom="34px" /> |
| 57 | + </view> |
| 58 | + ); |
| 59 | +} |
| 60 | +``` |
| 61 | + |
| 62 | +```tsx |
| 63 | +const LynxConsole = lazy(() => import("lynx-console")); |
| 64 | + |
| 65 | +function App() { |
| 66 | + return ( |
| 67 | + <view> |
| 68 | + {/* Your app content */} |
| 69 | + <Suspense> |
| 70 | + <LynxConsole theme="light" safeAreaInsetBottom="34px" /> |
| 71 | + <Suspense> |
| 72 | + </view> |
| 73 | + ); |
| 74 | +} |
| 75 | +``` |
| 76 | + |
| 77 | +### Controlling with ref |
| 78 | + |
| 79 | +You can programmatically open and close the console using `LynxConsoleHandle`. |
| 80 | + |
| 81 | +```tsx |
| 82 | +import { type LynxConsoleHandle } from "lynx-console"; |
| 83 | +import { useRef } from "@lynx-js/react"; |
| 84 | + |
| 85 | +const LynxConsole = lazy(() => import("lynx-console")); |
| 86 | + |
| 87 | +function App() { |
| 88 | + const consoleRef = useRef<LynxConsoleHandle>(null); |
| 89 | + |
| 90 | + const toggleConsole = () => { |
| 91 | + if (consoleRef.current?.isOpen()) { |
| 92 | + consoleRef.current.close(); |
| 93 | + } else { |
| 94 | + consoleRef.current?.open(); |
| 95 | + } |
| 96 | + }; |
| 97 | + |
| 98 | + return ( |
| 99 | + <view> |
| 100 | + <Suspense> |
| 101 | + <LynxConsole ref={consoleRef} /> |
| 102 | + <Suspense> |
| 103 | + </view> |
| 104 | + ); |
| 105 | +} |
| 106 | +``` |
| 107 | + |
| 108 | +## API |
| 109 | + |
| 110 | +### `LynxConsole` Props |
| 111 | + |
| 112 | +| Prop | Type | Default | Description | |
| 113 | +|------|------|---------|-------------| |
| 114 | +| `theme` | `"light" \| "dark"` | `"light"` | Console UI theme | |
| 115 | +| `safeAreaInsetBottom` | `string` | `"50px"` | Bottom safe area inset | |
| 116 | + |
| 117 | +### `LynxConsoleHandle` |
| 118 | + |
| 119 | +| Method | Description | |
| 120 | +|--------|-------------| |
| 121 | +| `open()` | Opens the console | |
| 122 | +| `close()` | Closes the console | |
| 123 | +| `isOpen()` | Returns whether the console is open | |
| 124 | + |
| 125 | +### Monitor Initialization Functions |
| 126 | + |
| 127 | +| Function | Description | |
| 128 | +|----------|-------------| |
| 129 | +| `initLogMonitor()` | Captures `console.log`, `console.error`, etc. | |
| 130 | +| `initMainThreadConsole()` | Captures console output from the main thread | |
| 131 | +| `initNetworkMonitor()` | Intercepts and records `fetch` requests | |
| 132 | +| `initPerformanceMonitor()` | Collects performance metrics | |
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