Allow to embed source files into JS source maps

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

@@ -48,6 +48,15 @@ open class DefaultValues(val defaultValue: String, val possibleValues: List<Stri
             listOf("\"plain\"", "\"amd\"", "\"commonjs\"", "\"umd\"")
     )
 
+    object JsSourceMapContentModes : DefaultValues(
+            "\"${K2JsArgumentConstants.SOURCE_MAP_SOURCE_CONTENT_INLINING}\"",
+            listOf(
+                    K2JsArgumentConstants.SOURCE_MAP_SOURCE_CONTENT_NEVER,
+                    K2JsArgumentConstants.SOURCE_MAP_SOURCE_CONTENT_ALWAYS,
+                    K2JsArgumentConstants.SOURCE_MAP_SOURCE_CONTENT_INLINING
+            ).map { "\"$it\""}
+    )
+
     object JsMain : DefaultValues(
             "\"" + CALL + "\"",
             listOf("\"" + CALL + "\"", "\"" + NO_CALL + "\"")

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

@@ -52,6 +52,14 @@ public class K2JSCompilerArguments extends CommonCompilerArguments {
     )
     public String sourceMapSourceRoots;
 
+    @GradleOption(DefaultValues.JsSourceMapContentModes.class)
+    @Argument(
+            value = "-source-map-embed-sources",
+            valueDescription = "{ always, never, inlining }",
+            description = "Embed source files into source map"
+    )
+    public String sourceMapEmbedSources;
+
     @GradleOption(DefaultValues.BooleanTrueDefault.class)
     @Argument(value = "-meta-info", description = "Generate .meta.js and .kjsm files with metadata. Use to create a library")
     public boolean metaInfo;

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

@@ -24,4 +24,8 @@ public interface K2JsArgumentConstants {
     String MODULE_AMD = "amd";
     String MODULE_COMMONJS = "commonjs";
     String MODULE_UMD = "umd";
+
+    String SOURCE_MAP_SOURCE_CONTENT_ALWAYS = "always";
+    String SOURCE_MAP_SOURCE_CONTENT_NEVER = "never";
+    String SOURCE_MAP_SOURCE_CONTENT_INLINING = "inlining";
 }