[JS IR] Add a compiler option for generating name entries in sourcemaps

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/DefaultValues.kt

@@ -13,6 +13,7 @@ import org.jetbrains.kotlin.config.LanguageVersion
 import org.jetbrains.kotlin.gradle.dsl.JsMainFunctionExecutionMode
 import org.jetbrains.kotlin.gradle.dsl.JsModuleKind
 import org.jetbrains.kotlin.gradle.dsl.JsSourceMapEmbedMode
+import org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy
 import org.jetbrains.kotlin.gradle.dsl.KotlinVersion as KotlinVersionDsl
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget as JvmTargetDsl
 import kotlin.reflect.KType
@@ -118,6 +119,23 @@ open class DefaultValues(
         """.trimIndent()
     )
 
+    object JsSourceMapNamesPolicies : DefaultValues(
+        "null",
+        typeOf<JsSourceMapNamesPolicy?>(),
+        typeOf<String?>(),
+        possibleValues = listOf(
+            K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_NO,
+            K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES,
+            K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_FQ_NAMES,
+        ).map { "\"$it\"" },
+        fromKotlinOptionConverterProp = """
+        this?.let { ${typeOf<JsSourceMapNamesPolicy>()}.fromPolicy(it) }
+        """.trimIndent(),
+        toKotlinOptionConverterProp = """
+        this?.policy
+        """.trimIndent()
+    )
+
     object JsMain : DefaultValues(
         "${typeOf<JsMainFunctionExecutionMode>()}.${JsMainFunctionExecutionMode.CALL.name}",
         typeOf<JsMainFunctionExecutionMode>(),

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JSCompilerArguments.kt

@@ -96,6 +96,17 @@ class K2JSCompilerArguments : CommonCompilerArguments() {
     )
     var sourceMapEmbedSources: String? by NullableStringFreezableVar(null)
 
+    @GradleOption(
+        value = DefaultValues.JsSourceMapNamesPolicies::class,
+        gradleInputType = GradleInputTypes.INPUT
+    )
+    @Argument(
+        value = "-source-map-names-policy",
+        valueDescription = "{no|simple-names|fully-qualified-names}",
+        description = "How to map generated names to original names (IR backend only)"
+    )
+    var sourceMapNamesPolicy: String? by NullableStringFreezableVar(null)
+
     @GradleOption(
         value = DefaultValues.BooleanTrueDefault::class,
         gradleInputType = GradleInputTypes.INPUT

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JsArgumentConstants.java

@@ -30,6 +30,10 @@ public interface K2JsArgumentConstants {
     String SOURCE_MAP_SOURCE_CONTENT_NEVER = "never";
     String SOURCE_MAP_SOURCE_CONTENT_INLINING = "inlining";
 
+    String SOURCE_MAP_NAMES_POLICY_NO = "no";
+    String SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES = "simple-names";
+    String SOURCE_MAP_NAMES_POLICY_FQ_NAMES = "fully-qualified-names";
+
     String RUNTIME_DIAGNOSTIC_LOG = "log";
     String RUNTIME_DIAGNOSTIC_EXCEPTION = "exception";
 }

compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt

@@ -576,9 +576,10 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
         else
             SourceMapSourceEmbedding.INLINING
         if (sourceMapContentEmbedding == null) {
-            val message = "Unknown source map source embedding mode: " + sourceMapEmbedContentString + ". Valid values are: " +
-                    StringUtil.join(sourceMapContentEmbeddingMap.keys, ", ")
-            messageCollector.report(ERROR, message, null)
+            messageCollector.report(
+                ERROR,
+                "Unknown source map source embedding mode: $sourceMapEmbedContentString. Valid values are: ${sourceMapContentEmbeddingMap.keys.joinToString()}"
+            )
             sourceMapContentEmbedding = SourceMapSourceEmbedding.INLINING
         }
         configuration.put(JSConfigurationKeys.SOURCE_MAP_EMBED_SOURCES, sourceMapContentEmbedding)
@@ -587,6 +588,20 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
             messageCollector.report(WARNING, "source-map-embed-sources argument has no effect without source map", null)
         }
 
+        val sourceMapNamesPolicyString = arguments.sourceMapNamesPolicy
+        var sourceMapNamesPolicy: SourceMapNamesPolicy? = if (sourceMapNamesPolicyString != null)
+            sourceMapNamesPolicyMap[sourceMapNamesPolicyString]
+        else
+            SourceMapNamesPolicy.SIMPLE_NAMES
+        if (sourceMapNamesPolicy == null) {
+            messageCollector.report(
+                ERROR,
+                "Unknown source map names policy: $sourceMapNamesPolicyString. Valid values are: ${sourceMapNamesPolicyMap.keys.joinToString()}"
+            )
+            sourceMapNamesPolicy = SourceMapNamesPolicy.SIMPLE_NAMES
+        }
+        configuration.put(JSConfigurationKeys.SOURCEMAP_NAMES_POLICY, sourceMapNamesPolicy)
+
         configuration.put(JSConfigurationKeys.PRINT_REACHABILITY_INFO, arguments.irDcePrintReachabilityInfo)
         configuration.put(JSConfigurationKeys.FAKE_OVERRIDE_VALIDATOR, arguments.fakeOverrideValidator)
     }
@@ -615,6 +630,12 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
             K2JsArgumentConstants.SOURCE_MAP_SOURCE_CONTENT_INLINING to SourceMapSourceEmbedding.INLINING
         )
 
+        private val sourceMapNamesPolicyMap = mapOf(
+            K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_NO to SourceMapNamesPolicy.NO,
+            K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES to SourceMapNamesPolicy.SIMPLE_NAMES,
+            K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_FQ_NAMES to SourceMapNamesPolicy.FULLY_QUALIFIED_NAMES
+        )
+
         @JvmStatic
         fun main(args: Array<String>) {
             doMain(K2JsIrCompiler(), args)

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/SourceMapsInfo.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.ir.backend.js
 
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.js.config.JSConfigurationKeys
+import org.jetbrains.kotlin.js.config.SourceMapNamesPolicy
 import org.jetbrains.kotlin.js.config.SourceMapSourceEmbedding
 import java.io.File
 
@@ -15,6 +16,7 @@ data class SourceMapsInfo(
     val sourceRoots: List<String>,
     val outputDir: File?,
     val sourceMapContentEmbedding: SourceMapSourceEmbedding,
+    val namesPolicy: SourceMapNamesPolicy,
 ) {
     companion object {
         fun from(configuration: CompilerConfiguration): SourceMapsInfo? =
@@ -24,6 +26,7 @@ data class SourceMapsInfo(
                     configuration.get(JSConfigurationKeys.SOURCE_MAP_SOURCE_ROOTS, emptyList()),
                     configuration.get(JSConfigurationKeys.OUTPUT_DIR),
                     configuration.get(JSConfigurationKeys.SOURCE_MAP_EMBED_SOURCES, SourceMapSourceEmbedding.INLINING),
+                    configuration.get(JSConfigurationKeys.SOURCEMAP_NAMES_POLICY, SourceMapNamesPolicy.SIMPLE_NAMES)
                 )
             } else {
                 null

compiler/testData/cli/js/jsHelp.out

@@ -13,6 +13,8 @@ where possible options include:
   -source-map-base-dirs <path> Base directories for calculating relative paths to source files in source map
   -source-map-embed-sources {always|never|inlining}
                              Embed source files into source map
+  -source-map-names-policy {no|simple-names|fully-qualified-names}
+                             How to map generated names to original names (IR backend only)
   -source-map-prefix         Add the specified prefix to paths in the source map
   -target { v5 }             Generate JS files for specific ECMA version
   -Werror                    Report an error if there are any warnings

generators/tests/org/jetbrains/kotlin/generators/arguments/GenerateGradleCompilerTypes.kt

@@ -22,6 +22,7 @@ fun generateGradleCompilerTypes(withPrinterToFile: (targetFile: File, Printer.()
     generateJsMainFunctionExecutionMode(destDir, withPrinterToFile)
     generateJsModuleKind(destDir, withPrinterToFile)
     generateJsSourceMapEmbedMode(destDir, withPrinterToFile)
+    generateJsSourceMapNamesPolicy(destDir, withPrinterToFile)
     generateJsDiagnosticMode(destDir, withPrinterToFile)
 }
 

generators/tests/org/jetbrains/kotlin/generators/arguments/jsTypesGenerators.kt

@@ -101,6 +101,36 @@ internal fun generateJsSourceMapEmbedMode(
     }
 }
 
+internal fun generateJsSourceMapNamesPolicy(
+    apiDir: File,
+    filePrinter: (targetFile: File, Printer.() -> Unit) -> Unit
+) {
+    val jsSourceMapNamesPolicyFqName = FqName("org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy")
+    filePrinter(fileFromFqName(apiDir, jsSourceMapNamesPolicyFqName)) {
+        generateDeclaration("enum class", jsSourceMapNamesPolicyFqName, afterType = "(val policy: String)") {
+            val modes = hashMapOf(
+                K2JsArgumentConstants::SOURCE_MAP_NAMES_POLICY_NO.name to K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_NO,
+                K2JsArgumentConstants::SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES.name to K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES,
+                K2JsArgumentConstants::SOURCE_MAP_NAMES_POLICY_FQ_NAMES.name to K2JsArgumentConstants.SOURCE_MAP_NAMES_POLICY_FQ_NAMES,
+            )
+
+            for ((key, value) in modes) {
+                println("$key(\"$value\"),")
+            }
+            println(";")
+
+            println()
+            println("companion object {")
+            withIndent {
+                println("fun fromPolicy(policy: String): JsSourceMapNamesPolicy =")
+                println("    JsSourceMapNamesPolicy.values().firstOrNull { it.policy == policy }")
+                println("        ?: throw IllegalArgumentException(\"Unknown JS source map names policy: ${'$'}policy\")")
+            }
+            println("}")
+        }
+    }
+}
+
 internal fun generateJsDiagnosticMode(
     apiDir: File,
     filePrinter: (targetFile: File, Printer.() -> Unit) -> Unit

js/js.frontend/src/org/jetbrains/kotlin/js/config/JSConfigurationKeys.java

@@ -38,6 +38,9 @@ public class JSConfigurationKeys {
     public static final CompilerConfigurationKey<SourceMapSourceEmbedding> SOURCE_MAP_EMBED_SOURCES =
             CompilerConfigurationKey.create("embed source files into source map");
 
+    public static final CompilerConfigurationKey<SourceMapNamesPolicy> SOURCEMAP_NAMES_POLICY = CompilerConfigurationKey.create(
+            "a policy to generate a mapping from generated identifiers to their corresponding original names");
+
     public static final CompilerConfigurationKey<Boolean> META_INFO =
             CompilerConfigurationKey.create("generate .meta.js and .kjsm files");
 

js/js.frontend/src/org/jetbrains/kotlin/js/config/SourceMapNamesPolicy.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2022 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.js.config
+
+/**
+ * A policy to generate name mappings in sourcemaps.
+ *
+ * Sourcemaps can map names from the generated JavaScript code to the names of the corresponding entities in the Kotlin source code.
+ */
+enum class SourceMapNamesPolicy {
+    /**
+     * Don't generate name mappings
+     */
+    NO,
+
+    /**
+     * Generate name mappings. For functions and methods, map to their simple names instead of fully-qualified names.
+     *
+     * This is the default.
+     */
+    SIMPLE_NAMES,
+
+    /**
+     * Generate name mappings. For functions and methods, map to their fully-qualified names.
+     */
+    FULLY_QUALIFIED_NAMES,
+}

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-gradle-plugin-api.txt

@@ -64,6 +64,20 @@ public final class org/jetbrains/kotlin/gradle/dsl/JsSourceMapEmbedMode$Companio
 	public final fun fromMode (Ljava/lang/String;)Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapEmbedMode;
 }
 
+public final class org/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy : java/lang/Enum {
+	public static final field Companion Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy$Companion;
+	public static final field SOURCE_MAP_NAMES_POLICY_FQ_NAMES Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy;
+	public static final field SOURCE_MAP_NAMES_POLICY_NO Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy;
+	public static final field SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy;
+	public final fun getPolicy ()Ljava/lang/String;
+	public static fun valueOf (Ljava/lang/String;)Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy;
+	public static fun values ()[Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy;
+}
+
+public final class org/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy$Companion {
+	public final fun fromPolicy (Ljava/lang/String;)Lorg/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy;
+}
+
 public final class org/jetbrains/kotlin/gradle/dsl/JvmTarget : java/lang/Enum {
 	public static final field Companion Lorg/jetbrains/kotlin/gradle/dsl/JvmTarget$Companion;
 	public static final field JVM_10 Lorg/jetbrains/kotlin/gradle/dsl/JvmTarget;
@@ -233,6 +247,7 @@ public abstract interface class org/jetbrains/kotlin/gradle/dsl/KotlinJsCompiler
 	public abstract fun getOutputFile ()Lorg/gradle/api/provider/Property;
 	public abstract fun getSourceMap ()Lorg/gradle/api/provider/Property;
 	public abstract fun getSourceMapEmbedSources ()Lorg/gradle/api/provider/Property;
+	public abstract fun getSourceMapNamesPolicy ()Lorg/gradle/api/provider/Property;
 	public abstract fun getSourceMapPrefix ()Lorg/gradle/api/provider/Property;
 	public abstract fun getTarget ()Lorg/gradle/api/provider/Property;
 	public abstract fun getTypedArrays ()Lorg/gradle/api/provider/Property;
@@ -277,6 +292,7 @@ public abstract interface class org/jetbrains/kotlin/gradle/dsl/KotlinJsOptions
 	public abstract fun getOutputFile ()Ljava/lang/String;
 	public abstract fun getSourceMap ()Z
 	public abstract fun getSourceMapEmbedSources ()Ljava/lang/String;
+	public abstract fun getSourceMapNamesPolicy ()Ljava/lang/String;
 	public abstract fun getSourceMapPrefix ()Ljava/lang/String;
 	public abstract fun getTarget ()Ljava/lang/String;
 	public abstract fun getTypedArrays ()Z
@@ -289,6 +305,7 @@ public abstract interface class org/jetbrains/kotlin/gradle/dsl/KotlinJsOptions
 	public abstract fun setOutputFile (Ljava/lang/String;)V
 	public abstract fun setSourceMap (Z)V
 	public abstract fun setSourceMapEmbedSources (Ljava/lang/String;)V
+	public abstract fun setSourceMapNamesPolicy (Ljava/lang/String;)V
 	public abstract fun setSourceMapPrefix (Ljava/lang/String;)V
 	public abstract fun setTarget (Ljava/lang/String;)V
 	public abstract fun setTypedArrays (Z)V
@@ -308,6 +325,7 @@ public final class org/jetbrains/kotlin/gradle/dsl/KotlinJsOptions$DefaultImpls
 	public static fun getOutputFile (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Ljava/lang/String;
 	public static fun getSourceMap (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Z
 	public static fun getSourceMapEmbedSources (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Ljava/lang/String;
+	public static fun getSourceMapNamesPolicy (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Ljava/lang/String;
 	public static fun getSourceMapPrefix (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Ljava/lang/String;
 	public static fun getSuppressWarnings (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Z
 	public static fun getTarget (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;)Ljava/lang/String;
@@ -327,6 +345,7 @@ public final class org/jetbrains/kotlin/gradle/dsl/KotlinJsOptions$DefaultImpls
 	public static fun setOutputFile (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Ljava/lang/String;)V
 	public static fun setSourceMap (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Z)V
 	public static fun setSourceMapEmbedSources (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Ljava/lang/String;)V
+	public static fun setSourceMapNamesPolicy (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Ljava/lang/String;)V
 	public static fun setSourceMapPrefix (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Ljava/lang/String;)V
 	public static fun setSuppressWarnings (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Z)V
 	public static fun setTarget (Lorg/jetbrains/kotlin/gradle/dsl/KotlinJsOptions;Ljava/lang/String;)V

libraries/tools/kotlin-gradle-compiler-types/src/generated/kotlin/org/jetbrains/kotlin/gradle/dsl/JsSourceMapNamesPolicy.kt

@@ -0,0 +1,19 @@
+// DO NOT EDIT MANUALLY!
+// Generated by org/jetbrains/kotlin/generators/arguments/GenerateGradleOptions.kt
+// To regenerate run 'generateGradleOptions' task
+@file:Suppress("RemoveRedundantQualifierName", "Deprecation", "DuplicatedCode")
+
+package org.jetbrains.kotlin.gradle.dsl
+
+enum class JsSourceMapNamesPolicy(val policy: String) {
+    SOURCE_MAP_NAMES_POLICY_FQ_NAMES("fully-qualified-names"),
+    SOURCE_MAP_NAMES_POLICY_SIMPLE_NAMES("simple-names"),
+    SOURCE_MAP_NAMES_POLICY_NO("no"),
+    ;
+
+    companion object {
+        fun fromPolicy(policy: String): JsSourceMapNamesPolicy =
+            JsSourceMapNamesPolicy.values().firstOrNull { it.policy == policy }
+                ?: throw IllegalArgumentException("Unknown JS source map names policy: $policy")
+    }
+}

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinJsCompilerOptions.kt

@@ -76,6 +76,15 @@ interface KotlinJsCompilerOptions : org.jetbrains.kotlin.gradle.dsl.KotlinCommon
     @get:org.gradle.api.tasks.Input
     val sourceMapEmbedSources: org.gradle.api.provider.Property<org.jetbrains.kotlin.gradle.dsl.JsSourceMapEmbedMode>
 
+    /**
+     * How to map generated names to original names (IR backend only)
+     * Possible values: "no", "simple-names", "fully-qualified-names"
+     * Default value: null
+     */
+    @get:org.gradle.api.tasks.Optional
+    @get:org.gradle.api.tasks.Input
+    val sourceMapNamesPolicy: org.gradle.api.provider.Property<org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy>
+
     /**
      * Add the specified prefix to paths in the source map
      * Default value: null

libraries/tools/kotlin-gradle-plugin-api/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinJsOptions.kt

@@ -97,6 +97,19 @@ interface KotlinJsOptions : org.jetbrains.kotlin.gradle.dsl.KotlinCommonOptions
         get() = options.sourceMapEmbedSources.orNull.sourceMapEmbedSourcesKotlinOption
         set(value) = options.sourceMapEmbedSources.set(value.sourceMapEmbedSourcesCompilerOption)
 
+    private val kotlin.String?.sourceMapNamesPolicyCompilerOption get() = this?.let { org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy.fromPolicy(it) }
+
+    private val org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy?.sourceMapNamesPolicyKotlinOption get() = this?.policy
+
+    /**
+     * How to map generated names to original names (IR backend only)
+     * Possible values: "no", "simple-names", "fully-qualified-names"
+     * Default value: null
+     */
+    var sourceMapNamesPolicy: kotlin.String?
+        get() = options.sourceMapNamesPolicy.orNull.sourceMapNamesPolicyKotlinOption
+        set(value) = options.sourceMapNamesPolicy.set(value.sourceMapNamesPolicyCompilerOption)
+
     /**
      * Add the specified prefix to paths in the source map
      * Default value: null

libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinJsCompilerOptionsDefault.kt

@@ -37,6 +37,9 @@ internal abstract class KotlinJsCompilerOptionsDefault @javax.inject.Inject cons
     override val sourceMapEmbedSources: org.gradle.api.provider.Property<org.jetbrains.kotlin.gradle.dsl.JsSourceMapEmbedMode> =
         objectFactory.property(org.jetbrains.kotlin.gradle.dsl.JsSourceMapEmbedMode::class.java)
 
+    override val sourceMapNamesPolicy: org.gradle.api.provider.Property<org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy> =
+        objectFactory.property(org.jetbrains.kotlin.gradle.dsl.JsSourceMapNamesPolicy::class.java)
+
     override val sourceMapPrefix: org.gradle.api.provider.Property<kotlin.String> =
         objectFactory.property(kotlin.String::class.java)
 
@@ -57,6 +60,7 @@ internal abstract class KotlinJsCompilerOptionsDefault @javax.inject.Inject cons
         args.outputFile = outputFile.orNull
         args.sourceMap = sourceMap.get()
         args.sourceMapEmbedSources = sourceMapEmbedSources.orNull?.mode
+        args.sourceMapNamesPolicy = sourceMapNamesPolicy.orNull?.policy
         args.sourceMapPrefix = sourceMapPrefix.orNull
         args.target = target.get()
         args.typedArrays = typedArrays.get()
@@ -73,6 +77,7 @@ internal abstract class KotlinJsCompilerOptionsDefault @javax.inject.Inject cons
         args.outputFile = null
         args.sourceMap = false
         args.sourceMapEmbedSources = null
+        args.sourceMapNamesPolicy = null
         args.sourceMapPrefix = null
         args.target = "v5"
         args.typedArrays = true