compiler/testData/diagnostics/testsWithJsStdLibAndBackendCompilation/jsCode/badAssignment.fir.kt

// FIR_DIFFERENCE
// The diagnostic cannot be implemented with the FIR frontend checker because it requires constant evaluation over FIR.
// The diagnostic is implemented as a klib check over IR.

// IGNORE_BACKEND_K1: JS_IR
// DIAGNOSTICS: -UNUSED_PARAMETER
fun Int.foo(x: Int) {
    js(<!JSCODE_ERROR!>"this = x;"<!>)
}