The meaning of this check is the same as K1
JSCODE_ARGUMENT_SHOULD_BE_CONSTANT and JSCODE_ARGUMENT_NON_CONST_EXPRESSION
diagnostics.
The main difference is that K2 JSCODE_ARGUMENT_NON_CONST_EXPRESSION
diagnostic checks the js() argument in the same way as
const val initializers or annotation arguments are checked.
This means that, the K2 diagnostic is stricter than original
K1 JSCODE_ARGUMENT_SHOULD_BE_CONSTANT diagnostic,
which allows the use of non-constant vals.
^KT-59435 Fixed
Add a special annotation @JsExternalTypeArgument for
marking function parameters. The marked parameter
accepts an argument with an external type only.
^KT-57479 Fixed
Add a special annotation @JsExternalInheritorsOnly for marking
external interfaces and classes. The marked interface or class
can’t be a parent for non external interfaces, classes or objects.
^KT-57423 Fixed
Svyatoslav Kuzmich