diff --git a/compiler/cli/cli-js-klib/src/GenerateJsIrKlib.kt b/compiler/cli/cli-js-klib/src/GenerateJsIrKlib.kt
index 60f27215550..14bcc7f20e9 100644
--- a/compiler/cli/cli-js-klib/src/GenerateJsIrKlib.kt
+++ b/compiler/cli/cli-js-klib/src/GenerateJsIrKlib.kt
@@ -71,6 +71,7 @@ fun buildKLib(
     allDependencies: KotlinLibraryResolveResult,
     commonSources: List<String>
 ) {
+    val configuration = buildConfiguration(environment, moduleName)
     generateKLib(
         project = environment.project,
         files = sources.map { source ->
@@ -80,7 +81,8 @@ fun buildKLib(
             }
             file
         },
-        configuration = buildConfiguration(environment, moduleName),
+        analyzer = AnalyzerWithCompilerReport(configuration),
+        configuration = configuration,
         allDependencies = allDependencies,
         friendDependencies = emptyList(),
         outputKlibPath = outputPath,
@@ -144,4 +146,4 @@ private fun messageCollectorLogger(collector: MessageCollector) = object : Logge
         (collector as? GroupingMessageCollector)?.flush()
         kotlin.error(message)
     }
-}
\ No newline at end of file
+}
diff --git a/compiler/cli/cli-js/build.gradle.kts b/compiler/cli/cli-js/build.gradle.kts
index 31948b38c0c..58d5af170a1 100644
--- a/compiler/cli/cli-js/build.gradle.kts
+++ b/compiler/cli/cli-js/build.gradle.kts
@@ -11,7 +11,6 @@ dependencies {
     compile(project(":compiler:cli"))
     compile(project(":compiler:frontend"))
     compile(project(":compiler:backend-common"))
-    compile(project(":compiler:backend"))
     compile(project(":compiler:ir.backend.common"))
     compile(project(":compiler:ir.serialization.js"))
     compile(project(":compiler:backend.js"))
diff --git a/compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt b/compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt
index 4a189ecafcb..45033d0f85a 100644
--- a/compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt
+++ b/compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt
@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments
 import org.jetbrains.kotlin.cli.common.arguments.K2JsArgumentConstants
 import org.jetbrains.kotlin.cli.common.config.addKotlinSourceRoot
 import org.jetbrains.kotlin.cli.common.extensions.ScriptEvaluationExtension
+import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.*
 import org.jetbrains.kotlin.cli.common.messages.GroupingMessageCollector
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
@@ -29,15 +30,14 @@ import org.jetbrains.kotlin.config.IncrementalCompilation
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.incremental.components.ExpectActualTracker
 import org.jetbrains.kotlin.incremental.components.LookupTracker
-import org.jetbrains.kotlin.incremental.js.IncrementalNextRoundChecker
 import org.jetbrains.kotlin.incremental.js.IncrementalDataProvider
+import org.jetbrains.kotlin.incremental.js.IncrementalNextRoundChecker
 import org.jetbrains.kotlin.incremental.js.IncrementalResultsConsumer
 import org.jetbrains.kotlin.ir.backend.js.*
 import org.jetbrains.kotlin.js.config.EcmaVersion
 import org.jetbrains.kotlin.js.config.JSConfigurationKeys
 import org.jetbrains.kotlin.js.config.JsConfig
 import org.jetbrains.kotlin.js.config.SourceMapSourceEmbedding
-import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.metadata.deserialization.BinaryVersion
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.serialization.js.ModuleKind
@@ -189,6 +189,7 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
                 generateKLib(
                     project = config.project,
                     files = sourcesFiles,
+                    analyzer = AnalyzerWithCompilerReport(config.configuration),
                     configuration = config.configuration,
                     allDependencies = resolvedLibraries,
                     friendDependencies = friendDependencies,
@@ -220,6 +221,7 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
                 compile(
                     projectJs,
                     mainModule,
+                    AnalyzerWithCompilerReport(config.configuration),
                     config.configuration,
                     phaseConfig,
                     allDependencies = resolvedLibraries,
@@ -396,4 +398,4 @@ fun loadPluginsForTests(configuration: CompilerConfiguration): ExitCode {
     pluginClasspaths = jars.map { it.canonicalPath } + pluginClasspaths
 
     return PluginCliParser.loadPluginsSafe(pluginClasspaths, mutableListOf(), configuration)
-}
\ No newline at end of file
+}
diff --git a/compiler/cli/src/org/jetbrains/kotlin/cli/common/messages/AnalyzerWithCompilerReport.kt b/compiler/cli/src/org/jetbrains/kotlin/cli/common/messages/AnalyzerWithCompilerReport.kt
index 000d19b45c3..298efd641fe 100644
--- a/compiler/cli/src/org/jetbrains/kotlin/cli/common/messages/AnalyzerWithCompilerReport.kt
+++ b/compiler/cli/src/org/jetbrains/kotlin/cli/common/messages/AnalyzerWithCompilerReport.kt
@@ -20,10 +20,14 @@ import com.intellij.openapi.util.io.FileUtil.toSystemDependentName
 import com.intellij.openapi.util.text.StringUtil
 import com.intellij.psi.*
 import com.intellij.psi.util.PsiFormatUtil
+import org.jetbrains.kotlin.analyzer.AbstractAnalyzerWithCompilerReport
 import org.jetbrains.kotlin.analyzer.AnalysisResult
+import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.*
 import org.jetbrains.kotlin.codegen.state.IncompatibleClassTrackerImpl
+import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.LanguageVersionSettings
+import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.diagnostics.*
 import org.jetbrains.kotlin.diagnostics.DiagnosticUtils.sortedDiagnostics
 import org.jetbrains.kotlin.diagnostics.rendering.DefaultErrorMessages
@@ -43,8 +47,13 @@ import org.jetbrains.kotlin.serialization.deserialization.IncompatibleVersionErr
 class AnalyzerWithCompilerReport(
     private val messageCollector: MessageCollector,
     private val languageVersionSettings: LanguageVersionSettings
-) {
-    lateinit var analysisResult: AnalysisResult
+) : AbstractAnalyzerWithCompilerReport {
+    override lateinit var analysisResult: AnalysisResult
+
+    constructor(configuration: CompilerConfiguration) : this(
+        configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY) ?: MessageCollector.NONE,
+        configuration.languageVersionSettings
+    )
 
     private fun reportIncompleteHierarchies() {
         val bindingContext = analysisResult.bindingContext
@@ -99,11 +108,10 @@ class AnalyzerWithCompilerReport(
 
     class SyntaxErrorReport(val isHasErrors: Boolean, val isAllErrorsAtEof: Boolean)
 
-    fun hasErrors(): Boolean {
-        return messageCollector.hasErrors()
-    }
+    override fun hasErrors(): Boolean =
+        messageCollector.hasErrors()
 
-    fun analyzeAndReport(files: Collection<KtFile>, analyze: () -> AnalysisResult) {
+    override fun analyzeAndReport(files: Collection<KtFile>, analyze: () -> AnalysisResult) {
         analysisResult = analyze()
         ExperimentalUsageChecker.checkCompilerArguments(
             analysisResult.moduleDescriptor, languageVersionSettings,
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/analyzer/AbstractAnalyzerWithCompilerReport.kt b/compiler/frontend/src/org/jetbrains/kotlin/analyzer/AbstractAnalyzerWithCompilerReport.kt
new file mode 100644
index 00000000000..1825c7559b3
--- /dev/null
+++ b/compiler/frontend/src/org/jetbrains/kotlin/analyzer/AbstractAnalyzerWithCompilerReport.kt
@@ -0,0 +1,16 @@
+/*
+ * 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.analyzer
+
+import org.jetbrains.kotlin.psi.KtFile
+
+interface AbstractAnalyzerWithCompilerReport {
+    val analysisResult: AnalysisResult
+
+    fun analyzeAndReport(files: Collection<KtFile>, analyze: () -> AnalysisResult)
+
+    fun hasErrors(): Boolean
+}
diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt
index 4c2221aba86..4dfc1cbac2a 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/compiler.kt
@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.ir.backend.js
 
 import com.intellij.openapi.project.Project
+import org.jetbrains.kotlin.analyzer.AbstractAnalyzerWithCompilerReport
 import org.jetbrains.kotlin.backend.common.phaser.PhaseConfig
 import org.jetbrains.kotlin.backend.common.phaser.invokeToplevel
 import org.jetbrains.kotlin.config.CompilerConfiguration
@@ -48,6 +49,7 @@ class CompilerResult(
 fun compile(
     project: Project,
     mainModule: MainModule,
+    analyzer: AbstractAnalyzerWithCompilerReport,
     configuration: CompilerConfiguration,
     phaseConfig: PhaseConfig,
     allDependencies: KotlinLibraryResolveResult,
@@ -58,7 +60,7 @@ fun compile(
     generateDceJs: Boolean = false
 ): CompilerResult {
     val (moduleFragment: IrModuleFragment, dependencyModules, irBuiltIns, symbolTable, deserializer) =
-        loadIr(project, mainModule, configuration, allDependencies, friendDependencies)
+        loadIr(project, mainModule, analyzer, configuration, allDependencies, friendDependencies)
 
     val moduleDescriptor = moduleFragment.descriptor
 
diff --git a/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/compiler.kt b/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/compiler.kt
index 73716ea67c3..7e4b784b236 100644
--- a/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/compiler.kt
+++ b/compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/compiler.kt
@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.backend.wasm
 
 import com.intellij.openapi.project.Project
+import org.jetbrains.kotlin.analyzer.AbstractAnalyzerWithCompilerReport
 import org.jetbrains.kotlin.backend.common.phaser.PhaseConfig
 import org.jetbrains.kotlin.backend.common.phaser.invokeToplevel
 import org.jetbrains.kotlin.backend.wasm.codegen.IrModuleToWasm
@@ -25,6 +26,7 @@ data class WasmCompilerResult(val wat: String, val js: String)
 fun compileWasm(
     project: Project,
     files: List<KtFile>,
+    analyzer: AbstractAnalyzerWithCompilerReport,
     configuration: CompilerConfiguration,
     phaseConfig: PhaseConfig,
     allDependencies: KotlinLibraryResolveResult,
@@ -32,7 +34,7 @@ fun compileWasm(
     exportedDeclarations: Set<FqName> = emptySet()
 ): WasmCompilerResult {
     val (moduleFragment, dependencyModules, irBuiltIns, symbolTable, deserializer) =
-        loadIr(project, MainModule.SourceFiles(files), configuration, allDependencies, friendDependencies)
+        loadIr(project, MainModule.SourceFiles(files), analyzer, configuration, allDependencies, friendDependencies)
 
     val moduleDescriptor = moduleFragment.descriptor
     val context = WasmBackendContext(moduleDescriptor, irBuiltIns, symbolTable, moduleFragment, exportedDeclarations, configuration)
@@ -57,4 +59,4 @@ fun compileWasm(
     wasmPhases.invokeToplevel(phaseConfig, context, moduleFragment)
 
     return IrModuleToWasm(context).generateModule(moduleFragment)
-}
\ No newline at end of file
+}
diff --git a/compiler/ir/serialization.js/build.gradle.kts b/compiler/ir/serialization.js/build.gradle.kts
index bf3a438b718..5ce22dcd9e5 100644
--- a/compiler/ir/serialization.js/build.gradle.kts
+++ b/compiler/ir/serialization.js/build.gradle.kts
@@ -8,7 +8,6 @@ dependencies {
     compile(project(":compiler:ir.psi2ir"))
     compile(project(":compiler:ir.serialization.common"))
     compile(project(":js:js.frontend"))
-    compile(project(":compiler:cli"))
 
     compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
 
diff --git a/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt b/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt
index d4916d2d254..b8b3e64796e 100644
--- a/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt
+++ b/compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt
@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.ir.backend.js
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.vfs.VfsUtilCore
 import com.intellij.psi.PsiElement
+import org.jetbrains.kotlin.analyzer.AbstractAnalyzerWithCompilerReport
 import org.jetbrains.kotlin.analyzer.AnalysisResult
 import org.jetbrains.kotlin.backend.common.LoggingContext
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
@@ -18,11 +19,6 @@ import org.jetbrains.kotlin.backend.common.serialization.KlibIrVersion
 import org.jetbrains.kotlin.backend.common.serialization.metadata.DynamicTypeDeserializer
 import org.jetbrains.kotlin.backend.common.serialization.metadata.KlibMetadataVersion
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
-import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
-import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
-import org.jetbrains.kotlin.cli.common.messages.CompilerMessageLocation
-import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
-import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
@@ -59,11 +55,8 @@ import org.jetbrains.kotlin.storage.LockBasedStorageManager
 import org.jetbrains.kotlin.storage.StorageManager
 import org.jetbrains.kotlin.utils.DFS
 import java.io.File
-import java.util.*
-import kotlin.collections.ArrayList
 import org.jetbrains.kotlin.konan.file.File as KFile
 
-
 val KotlinLibrary.moduleName: String
     get() = manifestProperties.getProperty(KLIB_PROPERTY_UNIQUE_NAME)
 
@@ -96,6 +89,7 @@ class KotlinFileSerializedData(val metadata: ByteArray, val irData: SerializedIr
 fun generateKLib(
     project: Project,
     files: List<KtFile>,
+    analyzer: AbstractAnalyzerWithCompilerReport,
     configuration: CompilerConfiguration,
     allDependencies: KotlinLibraryResolveResult,
     friendDependencies: List<KotlinLibrary>,
@@ -131,7 +125,8 @@ fun generateKLib(
         icData = emptyList()
     }
 
-    val depsDescriptors = ModulesStructure(project, MainModule.SourceFiles(files), configuration, allDependencies, friendDependencies)
+    val depsDescriptors =
+        ModulesStructure(project, MainModule.SourceFiles(files), analyzer, configuration, allDependencies, friendDependencies)
 
     val psi2IrContext = runAnalysisAndPreparePsi2Ir(depsDescriptors)
 
@@ -180,11 +175,12 @@ private fun sortDependencies(dependencies: List<KotlinLibrary>, mapping: Map<Kot
 fun loadIr(
     project: Project,
     mainModule: MainModule,
+    analyzer: AbstractAnalyzerWithCompilerReport,
     configuration: CompilerConfiguration,
     allDependencies: KotlinLibraryResolveResult,
     friendDependencies: List<KotlinLibrary>
 ): IrModuleInfo {
-    val depsDescriptors = ModulesStructure(project, mainModule, configuration, allDependencies, friendDependencies)
+    val depsDescriptors = ModulesStructure(project, mainModule, analyzer, configuration, allDependencies, friendDependencies)
 
     when (mainModule) {
         is MainModule.SourceFiles -> {
@@ -323,6 +319,7 @@ sealed class MainModule {
 private class ModulesStructure(
     private val project: Project,
     private val mainModule: MainModule,
+    private val analyzer: AbstractAnalyzerWithCompilerReport,
     val compilerConfiguration: CompilerConfiguration,
     val allDependencies: KotlinLibraryResolveResult,
     private val friendDependencies: List<KotlinLibrary>
@@ -345,16 +342,7 @@ private class ModulesStructure(
         require(mainModule is MainModule.SourceFiles)
         val files = mainModule.files
 
-        // TODO: Should we not provide default message collector?
-        val messageCollector: MessageCollector =
-            compilerConfiguration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY) ?: MessageCollector.NONE
-
-        val analyzerWithCompilerReport = AnalyzerWithCompilerReport(
-            messageCollector,
-            compilerConfiguration.languageVersionSettings
-        )
-
-        analyzerWithCompilerReport.analyzeAndReport(files) {
+        analyzer.analyzeAndReport(files) {
             TopDownAnalyzerFacadeForJSIR.analyzeFiles(
                 files,
                 project,
@@ -368,12 +356,12 @@ private class ModulesStructure(
 
         ProgressIndicatorAndCompilationCanceledStatus.checkCanceled()
 
-        val analysisResult = analyzerWithCompilerReport.analysisResult
+        val analysisResult = analyzer.analysisResult
         if (IncrementalCompilation.isEnabledForJs()) {
             /** can throw [IncrementalNextRoundException] */
             compareMetadataAndGoToNextICRoundIfNeeded(analysisResult, compilerConfiguration, files)
         }
-        if (analyzerWithCompilerReport.hasErrors() || analysisResult !is JsAnalysisResult)
+        if (analyzer.hasErrors() || analysisResult !is JsAnalysisResult)
             throw JsIrCompilationError
 
         TopDownAnalyzerFacadeForJSIR.checkForErrors(files, analysisResult.bindingContext)
@@ -557,4 +545,4 @@ private fun KlibMetadataIncrementalSerializer(
     metadataVersion = configuration.metadataVersion,
     descriptorTable = descriptorTable,
     skipExpects = !configuration.klibMpp
-)
\ No newline at end of file
+)
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicIrBoxTest.kt b/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicIrBoxTest.kt
index ee89b6b88bc..4ce9a94ddf6 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicIrBoxTest.kt
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicIrBoxTest.kt
@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.js.test
 
 import org.jetbrains.kotlin.backend.common.phaser.PhaseConfig
 import org.jetbrains.kotlin.backend.common.phaser.toPhaseMap
+import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.js.messageCollectorLogger
 import org.jetbrains.kotlin.ir.backend.js.*
@@ -113,6 +114,7 @@ abstract class BasicIrBoxTest(
             val compiledModule = compile(
                 project = config.project,
                 mainModule = MainModule.SourceFiles(filesToCompile),
+                analyzer = AnalyzerWithCompilerReport(config.configuration),
                 configuration = config.configuration,
                 phaseConfig = phaseConfig,
                 allDependencies = resolvedLibraries,
@@ -140,6 +142,7 @@ abstract class BasicIrBoxTest(
             generateKLib(
                 project = config.project,
                 files = filesToCompile,
+                analyzer = AnalyzerWithCompilerReport(config.configuration),
                 configuration = config.configuration,
                 allDependencies = resolvedLibraries,
                 friendDependencies = emptyList(),
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicWasmBoxTest.kt b/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicWasmBoxTest.kt
index 1cad5bb502d..defd42195a2 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicWasmBoxTest.kt
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/BasicWasmBoxTest.kt
@@ -13,6 +13,7 @@ import org.jetbrains.kotlin.backend.common.phaser.PhaseConfig
 import org.jetbrains.kotlin.backend.common.phaser.toPhaseMap
 import org.jetbrains.kotlin.backend.wasm.compileWasm
 import org.jetbrains.kotlin.backend.wasm.wasmPhases
+import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
 import org.jetbrains.kotlin.cli.jvm.compiler.EnvironmentConfigFiles
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.jetbrains.kotlin.config.CommonConfigurationKeys
@@ -112,6 +113,7 @@ abstract class BasicWasmBoxTest(
         val compilerResult = compileWasm(
             project = config.project,
             files = filesToCompile,
+            analyzer = AnalyzerWithCompilerReport(config.configuration),
             configuration = config.configuration,
             phaseConfig = phaseConfig,
             // TODO: Bypass the resolver fow wasm.