是否可以为 Java 和 JavaScript/TypeScript 创建库

Question

Im angular developer.

In our front & back exists some magic calculation methods.

Classes same, but when anyone find bug in calculation need to fix it in two different projects. maybe there is a way to create a generic codebase (maby function) that can be converted to js(or ts) & java and update two libraries based on the two results obtained

Answer 1

You could try to use kotlin.

Kotlin transpiles to JavaScript and also compiles to java bytecode .

However, you can only access kotlin utilities and neither access java or JS/TS types if you want to use the code in both java and ts/js code but you can use the kotlin stdlib .

But if it really is just a calculation, you may not need java/js specific classes/functions.

However, as VLAZ mentioned in the comments, you should consider doing the calculation only once in the backend.

Setting this up in IntelliJ

You can create such a project in IntelliJ by sekecting Kotlin in the New Project Window and using the project template Library .

Make sure you have the targets common , jvm and js . Since you didn't say you would do native stuff, you don't need the native target.

You can then use the kotlin library in both JavaScript (eg Angular) and Java projects as a dependency.

From a Java project, you can reference KOTLIN_PROJECT/build/classes/kotlin/jvm/main (this directory contains compiled Java classes).

From a JavaScript (eg Angular) project, you can reference KOTLIN_PROJECT/build/js/packages/kotlinToJavaAndJS .

As a proof of concept, I have made this repository on GitHub .