JS

Apply this macro to Swift declarations that you want to make callable from JavaScript:

// Export a function to JavaScript
@JS public func greet(name: String) -> String {
    return "Hello, \(name)!"
}

// Export a class and its members
@JS class Counter {
    private var count = 0

    @JS init() {}

    @JS func increment() {
        count += 1
    }

    @JS func getValue() -> Int {
        return count
    }
}

When you build your project with the BridgeJS plugin, these declarations will be accessible from JavaScript, and TypeScript declaration files (.d.ts) will be automatically generated to provide type safety.

For detailed usage information, see the article Exporting Swift to JavaScript.