[Gradle, JS] Change byArgument on byArgumentOrNull

#KT-38485 fixed

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

@@ -13,7 +13,7 @@ enum class KotlinJsCompilerType {
     companion object {
         const val jsCompilerProperty = "kotlin.js.compiler"
 
-        fun byArgument(argument: String): KotlinJsCompilerType? =
+        fun byArgumentOrNull(argument: String): KotlinJsCompilerType? =
             values().firstOrNull { it.name.equals(argument, ignoreCase = true) }
     }
 }

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

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

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

@@ -1,3 +1,8 @@
+/*
+ * Copyright 2010-2020 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.dsl
 
 import groovy.lang.Closure
@@ -26,7 +31,7 @@ interface KotlinTargetContainerWithJsPresetFunctions :
         configure: KotlinJsTargetDsl.() -> Unit = { }
     ) = js(
         name = name,
-        compiler = KotlinJsCompilerType.byArgument(compiler)
+        compiler = KotlinJsCompilerType.byArgumentOrNull(compiler)
             ?: throw IllegalArgumentException(
                 "Unable to find $compiler setting. Use [${KotlinJsCompilerType.values().toList().joinToString()}]"
             ),

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

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * Copyright 2010-2020 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.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
  */
 
 package org.jetbrains.kotlin.gradle.plugin
@@ -206,7 +195,7 @@ internal class PropertiesProvider private constructor(private val project: Proje
      * Use Kotlin/JS backend compiler type
      */
     val jsCompiler: KotlinJsCompilerType
-        get() = property(jsCompilerProperty)?.let { KotlinJsCompilerType.byArgument(it) } ?: KotlinJsCompilerType.LEGACY
+        get() = property(jsCompilerProperty)?.let { KotlinJsCompilerType.byArgumentOrNull(it) } ?: KotlinJsCompilerType.LEGACY
 
     private fun propertyWithDeprecatedVariant(propName: String, deprecatedPropName: String): String? {
         val deprecatedProperty = property(deprecatedPropName)