[Gradle, JS] Remove copypaste in js compiler argument

#KT-38485 fixed

libraries/tools/kotlin-gradle-plugin-api/src/main/kotlin/org/jetbrains/kotlin/gradle/plugin/KotlinJsCompilerType.kt

@@ -15,6 +15,12 @@ enum class KotlinJsCompilerType {
 
         fun byArgumentOrNull(argument: String): KotlinJsCompilerType? =
             values().firstOrNull { it.name.equals(argument, ignoreCase = true) }
+
+        fun byArgument(argument: String): KotlinJsCompilerType =
+            byArgumentOrNull(argument)
+                ?: throw IllegalArgumentException(
+                    "Unable to find $argument setting. Use [${values().toList().joinToString()}]"
+                )
     }
 }
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinProjectExtension.kt

@@ -166,10 +166,7 @@ open class KotlinJsProjectExtension :
         compiler: String,
         body: KotlinJsTargetDsl.() -> Unit = { }
     ): KotlinJsTargetDsl = js(
-        KotlinJsCompilerType.byArgumentOrNull(compiler)
+        KotlinJsCompilerType.byArgument(compiler),
-            ?: throw IllegalArgumentException(
-                "Unable to find $compiler setting. Use [${KotlinJsCompilerType.values().toList().joinToString()}]"
-            ),
         body
     )
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinTargetContainerWithJsPresetFunctions.kt

@@ -31,10 +31,7 @@ interface KotlinTargetContainerWithJsPresetFunctions :
         configure: KotlinJsTargetDsl.() -> Unit = { }
     ) = js(
         name = name,
-        compiler = KotlinJsCompilerType.byArgumentOrNull(compiler)
+        compiler = KotlinJsCompilerType.byArgument(compiler),
-            ?: throw IllegalArgumentException(
-                "Unable to find $compiler setting. Use [${KotlinJsCompilerType.values().toList().joinToString()}]"
-            ),
         configure = configure
     )