Closed
Description
Compiler version
Any, tested fom 3.0.0 to 3.2.1-RC1-bin-20220717-5c43324-NIGHTLY. Behaviour does not occur on 2.13.8.
Minimized code
import scala.scalajs.js
object Main {
def main(args: Array[String]): Unit = {
// Message is dynamically imported and results in a `import(...) call in JS`
js.dynamicImport {
println(new Message().msg)
}
}
}
class Message {
def msg = "Hello world dynamic import"
}Needs some linker config settings to support ES modules. Repro here in a sbt project: https://github.com/hugo-vrijswijk/scala-js-dynamic-import-scala3-bug
Output
[info] Running Main.
<ref *1> $c_jl_Error [java.lang.Error]: stub
at $c_LMain$.main__AT__V (file:///project/target/scala-3.2.1-RC1-bin-20220717-5c43324-NIGHTLY/hello-world-fastopt/main.mjs:818:27)
at $s_LMain__main__AT__V (file:///project/target/scala-3.2.1-RC1-bin-20220717-5c43324-NIGHTLY/hello-world-fastopt/main.mjs:804:15)
at file:///project/target/scala-3.2.1-RC1-bin-20220717-5c43324-NIGHTLY/hello-world-fastopt/main.mjs:1744:1
at ModuleJob.run (node:internal/modules/esm/module_job:198:25)
at async Promise.all (index 0)
at async ESMLoader.import (node:internal/modules/esm/loader:385:24)
at async importModuleDynamicallyWrapper (node:internal/vm/module:437:15) {
jl_Throwable__f_s: 'stub',
jl_Throwable__f_e: null,
jl_Throwable__f_enableSuppression: true,
jl_Throwable__f_writableStackTrace: true,
jl_Throwable__f_stackTraceStateInternal: [Circular *1],
jl_Throwable__f_stackTrace: null,
jl_Throwable__f_suppressed: null
}Scala.JS on Scala 3 emits the line:
- fastLinkJS:
throw $ct_jl_Error__T__(new $c_jl_Error(), "stub") - fullLinkJS:
throw new $c_jl_Error("stub")
On 2.13.8 the import is emitted as expected.
Expectation
Code runs without error and prints the expected message to the console. sbt ++2.13.x run works as expected, while sbt run gives the error above