[Gradle, JS] Add typescript optionally

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/KotlinJsTarget.kt

@@ -187,4 +187,8 @@ constructor(
     override fun useEsModules() {
         error("ES modules are not supported in legacy JS compiler. Please, use IR one instead.")
     }
+
+    override fun generateTypeScriptDefinitions() {
+        project.logger.warn("Legacy compiler does not support generation of TypeScript Definitions")
+    }
 }

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/dsl/KotlinJsTargetDsl.kt

@@ -55,6 +55,8 @@ interface KotlinJsTargetDsl : KotlinTarget {
     fun useCommonJs()
     fun useEsModules()
 
+    fun generateTypeScriptDefinitions()
+
     val binaries: KotlinJsBinaryContainer
 
     @Deprecated(

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTarget.kt

@@ -384,4 +384,17 @@ constructor(
         sourceMap = true
         sourceMapEmbedSources = "never"
     }
+
+    override fun generateTypeScriptDefinitions() {
+        compilations
+            .all {
+                binaries
+                    .withType(JsIrBinary::class.java)
+                    .all {
+                        it.linkTask.configure { linkTask ->
+                            linkTask.compilerOptions.freeCompilerArgs.add(GENERATE_D_TS)
+                        }
+                    }
+            }
+    }
 }

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/tasks/configuration/KotlinJsIrLinkConfig.kt

@@ -61,15 +61,13 @@ internal open class KotlinJsIrLinkConfig(
                             configureOptions(
                                 compilation,
                                 ENABLE_DCE,
-                                GENERATE_D_TS,
                                 MINIMIZED_MEMBER_NAMES
                             )
                         }
 
                         KotlinJsBinaryMode.DEVELOPMENT -> {
                             configureOptions(
-                                compilation,
+                                compilation
-                                GENERATE_D_TS
                             )
                         }
                         else -> throw InvalidUserDataException(