diff --git a/build.xml b/build.xml
index cdee4e237a9..99b8c4a2b8b 100644
--- a/build.xml
+++ b/build.xml
@@ -19,6 +19,7 @@
         <pathelement path="${idea.sdk}/lib/resources_en.jar"/>
 
         <fileset dir="${basedir}/lib" includes="**/*.jar"/>
+        <fileset dir="${basedir}/js/js.translator/lib" includes="*.jar"/>
         <pathelement path="${output}/classes/runtime"/>
     </path>
 
@@ -36,6 +37,9 @@
             <include name="util/src"/>
             <include name="jet.as.java.psi/src"/>
         </dirset>
+       <dirset dir="${basedir}/js/js.translator">
+         <include name="src"/>
+       </dirset>
     </path>
 
     <target name="init" depends="clean">
diff --git a/compiler/cli/cli.iml b/compiler/cli/cli.iml
index 7a376081b61..03add988345 100644
--- a/compiler/cli/cli.iml
+++ b/compiler/cli/cli.iml
@@ -14,6 +14,7 @@
     <orderEntry type="module" module-name="jet.as.java.psi" />
     <orderEntry type="library" name="intellij-core" level="project" />
     <orderEntry type="library" name="asm" level="project" />
+    <orderEntry type="module" module-name="js.translator" />
   </component>
 </module>
 
diff --git a/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompileEnvironmentConfiguration.java b/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompileEnvironmentConfiguration.java
new file mode 100644
index 00000000000..055cd0f4bd0
--- /dev/null
+++ b/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompileEnvironmentConfiguration.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2012 JetBrains s.r.o.
+ *
+ * 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.jet.cli.js;
+
+import com.intellij.openapi.util.Disposer;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.cli.common.CompileEnvironmentConfig;
+import org.jetbrains.jet.cli.common.messages.MessageCollector;
+
+/**
+ * @author Pavel Talanov
+ */
+public class K2JSCompileEnvironmentConfiguration extends CompileEnvironmentConfig {
+    /**
+     * NOTE: It's very important to call dispose for every object of this class or there will be memory leaks.
+     *
+     * @see Disposer
+     */
+    public K2JSCompileEnvironmentConfiguration(@NotNull MessageCollector messageCollector) {
+        super(messageCollector);
+    }
+}
diff --git a/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompiler.java b/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompiler.java
index 63d8e8fb778..85ffe896d88 100644
--- a/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompiler.java
+++ b/compiler/cli/src/org/jetbrains/jet/cli/js/K2JSCompiler.java
@@ -16,12 +16,83 @@
 
 package org.jetbrains.jet.cli.js;
 
+import com.google.common.base.Predicates;
+import com.intellij.openapi.Disposable;
+import com.intellij.psi.PsiFile;
+import jet.Function0;
+import jet.modules.Module;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.analyzer.AnalyzeExhaust;
+import org.jetbrains.jet.cli.common.CLICompiler;
+import org.jetbrains.jet.cli.common.ExitCode;
+import org.jetbrains.jet.cli.common.messages.*;
+import org.jetbrains.jet.cli.jvm.compiler.CompileEnvironmentUtil;
+import org.jetbrains.jet.cli.jvm.compiler.JetCoreEnvironment;
+import org.jetbrains.jet.lang.psi.JetFile;
+import org.jetbrains.jet.lang.resolve.BindingContext;
+import org.jetbrains.jet.lang.types.lang.JetStandardLibrary;
+import org.jetbrains.k2js.analyze.AnalyzerFacadeForJS;
+import org.jetbrains.k2js.config.Config;
+
+import java.io.File;
+import java.io.PrintStream;
+import java.util.Collections;
+import java.util.List;
+
+import static org.jetbrains.jet.cli.common.messages.CompilerMessageLocation.NO_LOCATION;
+
 /**
  * @author Pavel Talanov
  */
-public final class K2JSCompiler {
+public class K2JSCompiler extends CLICompiler<K2JSCompilerArguments, K2JSCompileEnvironmentConfiguration> {
 
     public static void main(String... args) {
-        //TODO
+        doMain(new K2JSCompiler(), args);
+    }
+
+    @NotNull
+    @Override
+    protected K2JSCompilerArguments createArguments() {
+        return new K2JSCompilerArguments();
+    }
+
+
+    @NotNull
+    @Override
+    protected ExitCode doExecute(PrintStream stream, K2JSCompilerArguments arguments, MessageRenderer renderer) {
+        PrintingMessageCollector messageCollector = new PrintingMessageCollector(stream, renderer, true);
+        if (arguments.module == null) {
+            stream.print(renderer.render(CompilerMessageSeverity.ERROR, "Module should be specified", NO_LOCATION));
+            return ExitCode.INTERNAL_ERROR;
+        }
+
+        File directory = new File(arguments.module).getParentFile();
+        List<Module> modules = CompileEnvironmentUtil
+                .loadModuleScript(arguments.module, MessageCollector.PLAIN_TEXT_TO_SYSTEM_ERR);
+        for (Module module : modules) {
+            Disposable rootDisposable = CompileEnvironmentUtil.createMockDisposable();
+            final JetCoreEnvironment environmentForJS = JetCoreEnvironment.getCoreEnvironmentForJS(rootDisposable);
+            CompileEnvironmentUtil.addSourcesFromModuleToEnvironment(environmentForJS, module, directory);
+            AnalyzerWithCompilerReport analyzerWithCompilerReport =
+                    new AnalyzerWithCompilerReport(messageCollector);
+            final List<JetFile> sources = environmentForJS.getSourceFiles();
+            analyzerWithCompilerReport.analyzeAndReport(new Function0<AnalyzeExhaust>() {
+                @Override
+                public AnalyzeExhaust invoke() {
+                    BindingContext context = AnalyzerFacadeForJS
+                            .analyzeFiles(sources, Predicates.<PsiFile>alwaysTrue(), new Config(environmentForJS.getProject()) {
+                                @NotNull
+                                @Override
+                                protected List<JetFile> generateLibFiles() {
+                                    return Collections.emptyList();
+                                }
+                            });
+                    return AnalyzeExhaust.success(context, JetStandardLibrary.getInstance());
+                }
+            }, sources);
+        }
+
+        stream.print(renderer.render(CompilerMessageSeverity.ERROR, "Greeting", NO_LOCATION));
+        return ExitCode.OK;
     }
 }
diff --git a/idea/src/org/jetbrains/jet/plugin/compiler/K2JSCompiler.java b/idea/src/org/jetbrains/jet/plugin/compiler/K2JSCompiler.java
index ca8f5e0bb58..31e3888b344 100644
--- a/idea/src/org/jetbrains/jet/plugin/compiler/K2JSCompiler.java
+++ b/idea/src/org/jetbrains/jet/plugin/compiler/K2JSCompiler.java
@@ -24,10 +24,16 @@ import com.intellij.openapi.module.Module;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.util.Chunk;
+import jet.Function1;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.plugin.JetFileType;
 import org.jetbrains.jet.plugin.project.JsModuleDetector;
 
+import java.io.PrintStream;
+
+import static org.jetbrains.jet.plugin.compiler.CompilerUtils.invokeExecMethod;
+import static org.jetbrains.jet.plugin.compiler.CompilerUtils.outputCompilerMessagesAndHandleExitCode;
+
 /**
  * @author Pavel Talanov
  */
@@ -47,8 +53,45 @@ public final class K2JSCompiler implements TranslatingCompiler {
 
     @Override
     public void compile(final CompileContext context, Chunk<Module> moduleChunk, final VirtualFile[] files, OutputSink sink) {
-        context.addMessage(CompilerMessageCategory.INFORMATION, "Some useful code will be there", null, -1, -1);
-        //TODO:
+        if (files.length == 0) {
+            return;
+        }
+
+        if (moduleChunk.getNodes().size() != 1) {
+            context.addMessage(CompilerMessageCategory.ERROR, "K2JSCompiler does not support multiple modules.", null, -1, -1);
+            return;
+        }
+
+        Module module = moduleChunk.getNodes().iterator().next();
+        final CompilerEnvironment environment = CompilerEnvironment.getEnvironmentFor(context, module, /*tests = */ false);
+        if (!environment.success()) {
+            environment.reportErrorsTo(context);
+            return;
+        }
+
+        CompilerUtils.OutputItemsCollectorImpl collector = new CompilerUtils.OutputItemsCollectorImpl(environment.getOutput().getPath());
+        outputCompilerMessagesAndHandleExitCode(context, collector, new Function1<PrintStream, Integer>() {
+            @Override
+            public Integer invoke(PrintStream stream) {
+                return execInProcess(context, environment, stream);
+            }
+        });
+        sink.add(environment.getOutput().getPath(), collector.getOutputs(), collector.getSources().toArray(VirtualFile.EMPTY_ARRAY));
+    }
+
+    @NotNull
+    private static Integer execInProcess(@NotNull CompileContext context,
+            @NotNull CompilerEnvironment environment, @NotNull PrintStream out) {
+        try {
+            String[] commandLineArgs = {"-tags", "-verbose", "-version"};
+            Object rc = invokeExecMethod(environment, out, context, commandLineArgs,
+                                         "org.jetbrains.jet.cli.js.K2JSCompiler");
+            return CompilerUtils.getReturnCodeFromObject(rc);
+        }
+        catch (Throwable e) {
+            context.addMessage(CompilerMessageCategory.ERROR, "Fail!", null, -1, -1);
+        }
+        return -1;
     }
 
     @NotNull