[Gradle, JS] Extract ir compiler flags

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/CompilerFlags.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.targets.js.ir
+
+/**
+ * @see [compiler/testData/cli/js/jsExtraHelp.out]
+ */
+
+const val DISABLE_PRE_IR = "-Xir-only"
+const val ENABLE_DCE = "-Xir-dce"
+
+const val GENERATE_D_TS = "-Xgenerate-dts"
+
+const val PRODUCE_JS = "-Xir-produce-js"
+const val PRODUCE_UNZIPPED_KLIB = "-Xir-produce-klib-dir"
+const val PRODUCE_ZIPPED_KLIB = "-Xir-produce-klib-file"

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrSubTarget.kt

@@ -54,11 +54,11 @@ abstract class KotlinJsIrSubTarget(
     }
 
     override fun produceKotlinLibrary() {
-        produceByFlags(PRODUCE_KLIB_DIR)
+        produceByFlags(PRODUCE_UNZIPPED_KLIB)
     }
 
     override fun produceJs() {
-        produceByFlags(PRODUCE_KLIB_DIR, PRODUCE_JS)
+        produceByFlags(PRODUCE_UNZIPPED_KLIB, PRODUCE_JS)
 
         configureMain()
     }
@@ -71,7 +71,7 @@ abstract class KotlinJsIrSubTarget(
             .matching { it.name == KotlinCompilation.TEST_COMPILATION_NAME }
             .all {
                 it.kotlinOptions {
-                    freeCompilerArgs += listOf(PRODUCE_KLIB_DIR, PRODUCE_JS)
+                    freeCompilerArgs += listOf(PRODUCE_UNZIPPED_KLIB, PRODUCE_JS)
                 }
             }
 
@@ -167,10 +167,6 @@ abstract class KotlinJsIrSubTarget(
     protected abstract fun configureMain(compilation: KotlinJsCompilation)
 
     companion object {
-        const val PRODUCE_JS = "-Xir-produce-js"
-        const val PRODUCE_KLIB_FILE = "-Xir-produce-klib-file"
-        const val PRODUCE_KLIB_DIR = "-Xir-produce-klib-dir"
-
         const val RUN_TASK_NAME = "run"
     }
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrTargetConfigurator.kt

@@ -58,7 +58,7 @@ open class KotlinJsIrTargetConfigurator(kotlinPluginVersion: String) :
                 sourceMap = true
                 sourceMapEmbedSources = null
 
-                freeCompilerArgs += listOf("-Xir-only")
+                freeCompilerArgs += listOf(DISABLE_PRE_IR)
             }
         }
     }