JSweet vs TeaVM
JSweet
jsweet.orgTeaVM
teavm.orgSide by side
| Figure | JSweet | TeaVM |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 0 |
| Spec score · Code Transpilers | 8.7 (#1) | 6.7 (#28) |
| Build integrations | Official tooling includes Eclipse, Maven and Gradle plugins. | The getting-started guide documents Maven archetypes and a Gradle plugin, with generated web apps deployable as WAR files or opened from an unzipped directory. |
| Debugging | A debug mode is provided for debugging Java code in a browser. | TeaVM produces source maps, and its IDEA plugin supports debugging code from the IDE. |
| License | The repository links to a license file but the opened page does not state the license name in its displayed README text. | The project repository states that TeaVM is distributed under the Apache License 2.0. |
| What it does | JSweet transpiles Java source into TypeScript and JavaScript for browser, mobile-webview and Node.js applications. | TeaVM is an ahead-of-time compiler that turns Java bytecode into JavaScript and WebAssembly for browsers. |
| Who it is for | JSweet is presented for Java developers building web and mobile HTML5 applications with JavaScript libraries and frameworks. | TeaVM describes itself as suited to Java, Kotlin, or Scala developers building a web front end or reusing backend code in a front end. |
Plans
In their own words
JSweet
JSweet converts Java programs into TypeScript and JavaScript for browsers, mobile Web views, or Node.js. It uses Oracle's Java compiler alongside Microsoft's TypeScript compiler to generate type-checked JavaScript. The project describes the output as regular JavaScript that can work directly with JavaScript programs and libraries. Listed language features include Java-to-TypeScript syntax mapping, Java constructs, async/await, and ECMAScript targets from ES3 to ES6. JSweet lists support for more than 1,000 JavaScript libraries, frameworks, and plugins, packaged as Maven artifacts called candies. It provides Eclipse, Maven, and Gradle plugins, and names Angular, Cordova, Node.js, and Three.js among example integrations. Generated programs can use CommonJS, AMD, or UMD modules and run in browsers or Node.js. A debug mode supports debugging Java code in a browser. Setup instructions call for Git, Node.js, and Maven, then use Maven to generate JavaScript from a quickstart project. JSweet is open source and free, and is presented for Java developers building web and mobile HTML5 applications with JavaScript libraries and frameworks.