Make DialectDetector correctly detect js language from custom JsFileImpl

pa.trickjlp · May 27, 2025, 8:47am

Hi,

I have a custom JSFile that extends JsFileImpl.

github.com/patricklx/intellij-emberjs-experimental

src/main/kotlin/com/emberjs/gts/GtsSupport.kt

main


      
              }
          }
          
          class GjsLanguage(): GtsLanguage(JS, "Gjs") {
              companion object {
                  val INSTANCE = GjsLanguage()
              }
          }
          
          
          class GtsFile(viewProvider: FileViewProvider?, val isJS: Boolean =false)
              : JSFileImpl(viewProvider!!, isJS.ifTrue { GjsLanguage.INSTANCE } ?: GtsLanguage.INSTANCE) {
              override fun getFileType(): FileType {
                  return isJS.ifTrue { GjsFileType.INSTANCE } ?: GtsFileType.INSTANCE
              }
          
              override fun toString(): String {
                  return "GTS File"
              }

the problem I have that many annotations appear in editor which relate to EcmaScript 5.1.
e.g. trailing comma in object warnings.

I traced it down to DialectDetector.calculateJSLanguage of stub elements returning JavaScript instead of Typescript.

in file JSStubElementImpl.class called in getLanguage

How can I make it correctly detect the JS language?

IntelliJ IDEA 2025.1.1.1 (Ultimate Edition)
Build #IU-251.25410.129, built on May 9, 2025
Source revision: b815cfdcaa594

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Make DialectDetector correctly detect js language from custom JsFileImpl

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