validateCardNumber(number) which takes a string, and takes a boolean.I have a feeling that it should be possible to import this function using @JsMethod perhaps, but I'm not sure of the exact syntax. The specs doc is a little bit lacking in examples.I'm using 2.8.0-beta1
The doc is lacking examples? IMHO its pretty descriptive for your use case. Using the JsInterop annotations you can import any JS library.
You can use any interface / class as callback as long as this interface/class has exactly a single abstract method (SAM). If you have that you can mark that interface / class using @JsFunction and JsInterop will convert it to a JS function that can be passed to JS code as a callback.
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