Description:
JavaScript playground that auto-evaluates as code is typed
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Type: Cask
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Latest Version: 4.1.0@0
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Tracked Since: Dec 28, 2025
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Links:
Homepage |
formulae.brew.sh
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Category: Developer tools
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Tags:
javascript
typescript
playground
developer-tools
editor
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Install:
brew install --cask runjs
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About:
RunJS is a desktop JavaScript and TypeScript playground that provides an interactive editor with immediate evaluation of code as you type. It supports modern JavaScript (ES6+) and TypeScript out of the box, offering a node-like environment with access to the file system and system clipboard. The tool is designed to replace browser-based consoles, offering better performance and native OS integration for developers needing quick calculations or code testing.
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Key Features:
- Real-time evaluation as you type
- Support for JavaScript and TypeScript
- File system and module import support
- Clean, native desktop interface
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Use Cases:
- Quickly testing JavaScript snippets without opening a browser
- Performing mathematical calculations or data transformations
- Prototyping logic for Node.js applications
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Alternatives:
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Quokka.js
– Quokka runs inside VS Code, while RunJS is a standalone application.
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Node REPL
– RunJS provides a graphical interface with syntax highlighting, unlike the terminal-based Node REPL.
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| Detected |
Version |
Rev |
Change |
Commit |
| Jul 7, 2026 2:19pm |
4.1.0 |
0 |
VERSION_BUMP |
80782fca |
| Jun 8, 2026 5:44pm |
4.0.6 |
0 |
VERSION_BUMP |
19d8b14e |
| May 24, 2026 4:43pm |
4.0.5 |
0 |
VERSION_BUMP |
a8e23be2 |
| May 5, 2026 8:17pm |
4.0.4 |
0 |
VERSION_BUMP |
c960e162 |
| Apr 30, 2026 4:53pm |
4.0.2 |
0 |
VERSION_BUMP |
72113a76 |
| Apr 29, 2026 1:58pm |
4.0.1 |
0 |
VERSION_BUMP |
3a81cfaa |
| Apr 28, 2026 10:06pm |
4.0.0 |
0 |
VERSION_BUMP |
147c5752 |
| Sep 15, 2025 1:02pm |
3.1.2 |
0 |
VERSION_BUMP |
a7123956 |
| Dec 20, 2023 11:24am |
2.10.1 |
0 |
VERSION_BUMP |
bd163c23 |
| Apr 20, 2023 8:11am |
2.9.0 |
0 |
VERSION_BUMP |
b2e2e1fb |
| Mar 12, 2023 3:24am |
2.8.0 |
0 |
VERSION_BUMP |
38b858f0 |
| Jan 28, 2023 4:46pm |
2.7.5 |
0 |
VERSION_BUMP |
324b50fd |
| Dec 10, 2022 8:40pm |
2.7.4 |
0 |
VERSION_BUMP |
dc7ac173 |
| Oct 8, 2022 12:22am |
2.7.1 |
0 |
VERSION_BUMP |
bcac44d4 |
| Aug 19, 2022 4:45pm |
2.6.0 |
0 |
VERSION_BUMP |
2263b500 |
| Jul 5, 2022 11:27pm |
2.5.1 |
0 |
VERSION_BUMP |
c5edacb1 |
| Jul 2, 2022 11:45pm |
2.5.0 |
0 |
VERSION_BUMP |
b1a9686f |
| Jun 10, 2022 5:14am |
2.4.1 |
0 |
VERSION_BUMP |
58faa842 |
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