diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt
index 8f7ee3c1f52..3089e78ec92 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt
@@ -132,7 +132,7 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) : Fir2IrCompon
                 get() {
                     // Pick the (necessarily unique) non-interface upper bound if it exists
                     for (type in bounds) {
-                        val klass = type.coneType.nothingToAny().toRegularClassSymbol(session)?.fir ?: continue
+                        val klass = type.coneType.coerceToAny().toRegularClassSymbol(session)?.fir ?: continue
                         val kind = klass.classKind
                         if (kind != ClassKind.INTERFACE && kind != ClassKind.ANNOTATION_CLASS) return klass
                     }
@@ -140,7 +140,7 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) : Fir2IrCompon
                     // Otherwise, choose either the first IrClass supertype or recurse.
                     // In the first case, all supertypes are interface types and the choice was arbitrary.
                     // In the second case, there is only a single supertype.
-                    val firstBoundType = bounds.first().coneType.fullyExpandedType(session).nothingToAny()
+                    val firstBoundType = bounds.first().coneType.fullyExpandedType(session).coerceToAny()
                     return when (val firstSuper = firstBoundType.toSymbol(session)?.fir) {
                         is FirRegularClass -> firstSuper
                         is FirTypeParameter -> firstSuper.erasedUpperBound
@@ -161,7 +161,7 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) : Fir2IrCompon
                 val symbol = when {
                     type.isArrayOrPrimitiveArray(checkUnsignedArrays = false) -> context.irBuiltIns.dataClassArrayMemberHashCodeSymbol
                     else -> {
-                        val classForType = when (val classifier = type.nothingToAny().toSymbol(session)?.fir) {
+                        val classForType = when (val classifier = type.coerceToAny().toSymbol(session)?.fir) {
                             is FirRegularClass -> classifier
                             is FirTypeParameter -> classifier.erasedUpperBound
                             else -> error("Unknown classifier kind $classifier")
@@ -176,11 +176,12 @@ class DataClassMembersGenerator(val components: Fir2IrComponents) : Fir2IrCompon
         }
 
         /**
-         * kotlin.Nothing has no members, so any function on property of type Nothing should be actually taken from kotlin.Any
+         * Convert types which do not have members - kotlin.Nothing and `dynamic` - to kotlin.Any.
          */
-        private fun ConeKotlinType.nothingToAny(): ConeKotlinType {
+        private fun ConeKotlinType.coerceToAny(): ConeKotlinType {
             return when {
                 this.isNothingOrNullableNothing -> session.builtinTypes.anyType.type
+                this is ConeDynamicType -> session.builtinTypes.anyType.type
                 else -> this
             }
         }
diff --git a/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.fir.ir.txt b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.fir.ir.txt
new file mode 100644
index 00000000000..8d12bd042df
--- /dev/null
+++ b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.fir.ir.txt
@@ -0,0 +1,157 @@
+FILE fqName:<root> fileName:/dynamicInDataClass.kt
+  CLASS CLASS name:Some modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Some
+    CONSTRUCTOR visibility:public <> (a:kotlin.String, b:dynamic) returnType:<root>.Some [primary]
+      VALUE_PARAMETER name:a index:0 type:kotlin.String
+      VALUE_PARAMETER name:b index:1 type:dynamic
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Some modality:FINAL visibility:public [data] superTypes:[kotlin.Any]'
+    PROPERTY name:a visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'a: kotlin.String declared in <root>.Some.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-a> visibility:public modality:FINAL <> ($this:<root>.Some) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:a visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.Some
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-a> (): kotlin.String declared in <root>.Some'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.<get-a>' type=<root>.Some origin=null
+    PROPERTY name:b visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'b: dynamic declared in <root>.Some.<init>' type=dynamic origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-b> visibility:public modality:FINAL <> ($this:<root>.Some) returnType:dynamic
+        correspondingProperty: PROPERTY name:b visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.Some
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-b> (): dynamic declared in <root>.Some'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.<get-b>' type=<root>.Some origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component1 visibility:public modality:FINAL <> ($this:<root>.Some) returnType:kotlin.String [operator]
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component1 (): kotlin.String declared in <root>.Some'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.component1' type=<root>.Some origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component2 visibility:public modality:FINAL <> ($this:<root>.Some) returnType:dynamic [operator]
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component2 (): dynamic declared in <root>.Some'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.component2' type=<root>.Some origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:copy visibility:public modality:FINAL <> ($this:<root>.Some, a:kotlin.String, b:dynamic) returnType:<root>.Some
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      VALUE_PARAMETER name:a index:0 type:kotlin.String
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.copy' type=<root>.Some origin=null
+      VALUE_PARAMETER name:b index:1 type:dynamic
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.copy' type=<root>.Some origin=null
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun copy (a: kotlin.String, b: dynamic): <root>.Some declared in <root>.Some'
+          CONSTRUCTOR_CALL 'public constructor <init> (a: kotlin.String, b: dynamic) declared in <root>.Some' type=<root>.Some origin=null
+            a: GET_VAR 'a: kotlin.String declared in <root>.Some.copy' type=kotlin.String origin=null
+            b: GET_VAR 'b: dynamic declared in <root>.Some.copy' type=dynamic origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Some) returnType:kotlin.String
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Some'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Some("
+            CONST String type=kotlin.String value="a="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.toString' type=<root>.Some origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="b="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.toString' type=<root>.Some origin=null
+            CONST String type=kotlin.String value=")"
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Some) returnType:kotlin.Int
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        VAR name:result type:kotlin.Int [var]
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.String' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.hashCode' type=<root>.Some origin=null
+        SET_VAR 'var result: kotlin.Int declared in <root>.Some.hashCode' type=kotlin.Unit origin=EQ
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: GET_VAR 'var result: kotlin.Int declared in <root>.Some.hashCode' type=kotlin.Int origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: WHEN type=kotlin.Int origin=null
+              BRANCH
+                if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                  arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                    receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.hashCode' type=<root>.Some origin=null
+                  arg1: CONST Null type=kotlin.Nothing? value=null
+                then: CONST Int type=kotlin.Int value=0
+              BRANCH
+                if: CONST Boolean type=kotlin.Boolean value=true
+                then: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+                  $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                    receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.hashCode' type=<root>.Some origin=null
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Some'
+          GET_VAR 'var result: kotlin.Int declared in <root>.Some.hashCode' type=kotlin.Int origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Some, other:kotlin.Any?) returnType:kotlin.Boolean [operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Some.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Some
+              GET_VAR 'other: kotlin.Any? declared in <root>.Some.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.Some [val]
+          TYPE_OP type=<root>.Some origin=CAST typeOperand=<root>.Some
+            GET_VAR 'other: kotlin.Any? declared in <root>.Some.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                  receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+          CONST Boolean type=kotlin.Boolean value=true
+  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String
+    BLOCK_BODY
+      VAR name:event type:<root>.Some [val]
+        CONSTRUCTOR_CALL 'public constructor <init> (a: kotlin.String, b: dynamic) declared in <root>.Some' type=<root>.Some origin=null
+          a: CONST String type=kotlin.String value="O"
+          b: CONST String type=kotlin.String value="K"
+      TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
+        CALL 'public open fun hashCode (): kotlin.Int declared in <root>.Some' type=kotlin.Int origin=null
+          $this: GET_VAR 'val event: <root>.Some declared in <root>.box' type=<root>.Some origin=null
+      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
+        CONST String type=kotlin.String value="OK"
diff --git a/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.fir.kt.txt b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.fir.kt.txt
new file mode 100644
index 00000000000..565b3fa909b
--- /dev/null
+++ b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.fir.kt.txt
@@ -0,0 +1,64 @@
+data class Some {
+  constructor(a: String, b: dynamic) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  val a: String
+    field = a
+    get
+
+  val b: dynamic
+    field = b
+    get
+
+  operator fun component1(): String {
+    return <this>.#a
+  }
+
+  operator fun component2(): dynamic {
+    return <this>.#b
+  }
+
+  fun copy(a: String = <this>.#a, b: dynamic = <this>.#b): Some {
+    return Some(a = a, b = b)
+  }
+
+  override fun toString(): String {
+    return "Some(" + "a=" + <this>.#a + ", " + "b=" + <this>.#b + ")"
+  }
+
+  override fun hashCode(): Int {
+    var result: Int = <this>.#a.hashCode()
+    result = result.times(other = 31).plus(other = when {
+      EQEQ(arg0 = <this>.#b, arg1 = null) -> 0
+      else -> <this>.#b.hashCode()
+    })
+    return result
+  }
+
+  override operator fun equals(other: Any?): Boolean {
+    when {
+      EQEQEQ(arg0 = <this>, arg1 = other) -> return true
+    }
+    when {
+      other !is Some -> return false
+    }
+    val tmp_0: Some = other as Some
+    when {
+      EQEQ(arg0 = <this>.#a, arg1 = tmp_0.#a).not() -> return false
+    }
+    when {
+      EQEQ(arg0 = <this>.#b, arg1 = tmp_0.#b).not() -> return false
+    }
+    return true
+  }
+
+}
+
+fun box(): String {
+  val event: Some = Some(a = "O", b = "K")
+  event.hashCode() /*~> Unit */
+  return "OK"
+}
diff --git a/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.ir.txt b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.ir.txt
new file mode 100644
index 00000000000..f7b9f44d04b
--- /dev/null
+++ b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.ir.txt
@@ -0,0 +1,158 @@
+FILE fqName:<root> fileName:/dynamicInDataClass.kt
+  CLASS CLASS name:Some modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
+    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Some
+    CONSTRUCTOR visibility:public <> (a:kotlin.String, b:dynamic) returnType:<root>.Some [primary]
+      VALUE_PARAMETER name:a index:0 type:kotlin.String
+      VALUE_PARAMETER name:b index:1 type:dynamic
+      BLOCK_BODY
+        DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () declared in kotlin.Any'
+        INSTANCE_INITIALIZER_CALL classDescriptor='CLASS CLASS name:Some modality:FINAL visibility:public [data] superTypes:[kotlin.Any]'
+    PROPERTY name:a visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'a: kotlin.String declared in <root>.Some.<init>' type=kotlin.String origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-a> visibility:public modality:FINAL <> ($this:<root>.Some) returnType:kotlin.String
+        correspondingProperty: PROPERTY name:a visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.Some
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-a> (): kotlin.String declared in <root>.Some'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.<get-a>' type=<root>.Some origin=null
+    PROPERTY name:b visibility:public modality:FINAL [val]
+      FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]
+        EXPRESSION_BODY
+          GET_VAR 'b: dynamic declared in <root>.Some.<init>' type=dynamic origin=INITIALIZE_PROPERTY_FROM_PARAMETER
+      FUN DEFAULT_PROPERTY_ACCESSOR name:<get-b> visibility:public modality:FINAL <> ($this:<root>.Some) returnType:dynamic
+        correspondingProperty: PROPERTY name:b visibility:public modality:FINAL [val]
+        $this: VALUE_PARAMETER name:<this> type:<root>.Some
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from='public final fun <get-b> (): dynamic declared in <root>.Some'
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.<get-b>' type=<root>.Some origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component1 visibility:public modality:FINAL <> ($this:<root>.Some) returnType:kotlin.String [operator]
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component1 (): kotlin.String declared in <root>.Some'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.component1' type=<root>.Some origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:component2 visibility:public modality:FINAL <> ($this:<root>.Some) returnType:dynamic [operator]
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun component2 (): dynamic declared in <root>.Some'
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.component2' type=<root>.Some origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:copy visibility:public modality:FINAL <> ($this:<root>.Some, a:kotlin.String, b:dynamic) returnType:<root>.Some
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      VALUE_PARAMETER name:a index:0 type:kotlin.String
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.copy' type=<root>.Some origin=null
+      VALUE_PARAMETER name:b index:1 type:dynamic
+        EXPRESSION_BODY
+          GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+            receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.copy' type=<root>.Some origin=null
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public final fun copy (a: kotlin.String, b: dynamic): <root>.Some declared in <root>.Some'
+          CONSTRUCTOR_CALL 'public constructor <init> (a: kotlin.String, b: dynamic) declared in <root>.Some' type=<root>.Some origin=null
+            a: GET_VAR 'a: kotlin.String declared in <root>.Some.copy' type=kotlin.String origin=null
+            b: GET_VAR 'b: dynamic declared in <root>.Some.copy' type=dynamic origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Some) returnType:kotlin.String
+      overridden:
+        public open fun toString (): kotlin.String declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Some'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Some("
+            CONST String type=kotlin.String value="a="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.toString' type=<root>.Some origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="b="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.toString' type=<root>.Some origin=null
+            CONST String type=kotlin.String value=")"
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Some) returnType:kotlin.Int
+      overridden:
+        public open fun hashCode (): kotlin.Int declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      BLOCK_BODY
+        VAR name:result type:kotlin.Int [var]
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.String' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.hashCode' type=<root>.Some origin=null
+        SET_VAR 'var result: kotlin.Int declared in <root>.Some.hashCode' type=kotlin.Unit origin=EQ
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: GET_VAR 'var result: kotlin.Int declared in <root>.Some.hashCode' type=kotlin.Int origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: WHEN type=kotlin.Int origin=null
+              BRANCH
+                if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                  arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                    receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.hashCode' type=<root>.Some origin=null
+                  arg1: CONST Null type=kotlin.Nothing? value=null
+                then: CONST Int type=kotlin.Int value=0
+              BRANCH
+                if: CONST Boolean type=kotlin.Boolean value=true
+                then: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+                  $this: TYPE_OP type=kotlin.Any origin=IMPLICIT_DYNAMIC_CAST typeOperand=kotlin.Any
+                    GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                      receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.hashCode' type=<root>.Some origin=null
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Some'
+          GET_VAR 'var result: kotlin.Int declared in <root>.Some.hashCode' type=kotlin.Int origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Some, other:kotlin.Any?) returnType:kotlin.Boolean [operator]
+      overridden:
+        public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in kotlin.Any
+      $this: VALUE_PARAMETER name:<this> type:<root>.Some
+      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Some.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Some
+              GET_VAR 'other: kotlin.Any? declared in <root>.Some.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.Some [val]
+          TYPE_OP type=<root>.Some origin=CAST typeOperand=<root>.Some
+            GET_VAR 'other: kotlin.Any? declared in <root>.Some.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:a type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                  receiver: GET_VAR '<this>: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:b type:dynamic visibility:private [final]' type=dynamic origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Some declared in <root>.Some.equals' type=<root>.Some origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Some'
+          CONST Boolean type=kotlin.Boolean value=true
+  FUN name:box visibility:public modality:FINAL <> () returnType:kotlin.String
+    BLOCK_BODY
+      VAR name:event type:<root>.Some [val]
+        CONSTRUCTOR_CALL 'public constructor <init> (a: kotlin.String, b: dynamic) declared in <root>.Some' type=<root>.Some origin=null
+          a: CONST String type=kotlin.String value="O"
+          b: CONST String type=kotlin.String value="K"
+      TYPE_OP type=kotlin.Unit origin=IMPLICIT_COERCION_TO_UNIT typeOperand=kotlin.Unit
+        CALL 'public open fun hashCode (): kotlin.Int declared in <root>.Some' type=kotlin.Int origin=null
+          $this: GET_VAR 'val event: <root>.Some declared in <root>.box' type=<root>.Some origin=null
+      RETURN type=kotlin.Nothing from='public final fun box (): kotlin.String declared in <root>'
+        CONST String type=kotlin.String value="OK"
diff --git a/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt
new file mode 100644
index 00000000000..b8c7a10a141
--- /dev/null
+++ b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt
@@ -0,0 +1,9 @@
+// TARGET_BACKEND: JS_IR
+
+data class Some(val a: String, val b: dynamic)
+
+fun box(): String {
+    val event = Some("O", "K")
+    event.hashCode()
+    return "OK"
+}
\ No newline at end of file
diff --git a/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt.txt b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt.txt
new file mode 100644
index 00000000000..fa0152364a0
--- /dev/null
+++ b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt.txt
@@ -0,0 +1,64 @@
+data class Some {
+  constructor(a: String, b: dynamic) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  val a: String
+    field = a
+    get
+
+  val b: dynamic
+    field = b
+    get
+
+  operator fun component1(): String {
+    return <this>.#a
+  }
+
+  operator fun component2(): dynamic {
+    return <this>.#b
+  }
+
+  fun copy(a: String = <this>.#a, b: dynamic = <this>.#b): Some {
+    return Some(a = a, b = b)
+  }
+
+  override fun toString(): String {
+    return "Some(" + "a=" + <this>.#a + ", " + "b=" + <this>.#b + ")"
+  }
+
+  override fun hashCode(): Int {
+    var result: Int = <this>.#a.hashCode()
+    result = result.times(other = 31).plus(other = when {
+      EQEQ(arg0 = <this>.#b, arg1 = null) -> 0
+      else -> <this>.#b /*~> Any */.hashCode()
+    })
+    return result
+  }
+
+  override operator fun equals(other: Any?): Boolean {
+    when {
+      EQEQEQ(arg0 = <this>, arg1 = other) -> return true
+    }
+    when {
+      other !is Some -> return false
+    }
+    val tmp_0: Some = other as Some
+    when {
+      EQEQ(arg0 = <this>.#a, arg1 = tmp_0.#a).not() -> return false
+    }
+    when {
+      EQEQ(arg0 = <this>.#b, arg1 = tmp_0.#b).not() -> return false
+    }
+    return true
+  }
+
+}
+
+fun box(): String {
+  val event: Some = Some(a = "O", b = "K")
+  event.hashCode() /*~> Unit */
+  return "OK"
+}
diff --git a/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.sig.kt.txt b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.sig.kt.txt
new file mode 100644
index 00000000000..6777f1cecb8
--- /dev/null
+++ b/compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.sig.kt.txt
@@ -0,0 +1,74 @@
+// CHECK:
+//   Mangled name: Some
+//   Public signature: /Some|null[0]
+data class Some {
+  // CHECK:
+  //   Mangled name: Some{}a
+  //   Public signature: /Some.a|-1200697420457237799[0]
+  //   Public signature debug description: {}a
+  val a: String
+    // CHECK JS_IR NATIVE:
+    //   Mangled name: Some#<get-a>(){}
+    //   Public signature: /Some.a.<get-a>|6785176174175479410[0]
+    //   Public signature debug description: <get-a>(){}
+    get
+
+  // CHECK:
+  //   Mangled name: Some{}b
+  //   Public signature: /Some.b|772347207915745207[0]
+  //   Public signature debug description: {}b
+  val b: dynamic
+    // CHECK JS_IR NATIVE:
+    //   Mangled name: Some#<get-b>(){}
+    //   Public signature: /Some.b.<get-b>|812004636995167743[0]
+    //   Public signature debug description: <get-b>(){}
+    get
+
+  // CHECK:
+  //   Mangled name: Some#<init>(kotlin.String;<dynamic>){}
+  //   Public signature: /Some.<init>|-5225459408480290556[0]
+  //   Public signature debug description: <init>(kotlin.String;<dynamic>){}
+  constructor(a: String, b: dynamic) /* primary */
+  // CHECK JS_IR NATIVE:
+  //   Mangled name: Some#component1(){}
+  //   Public signature: /Some.component1|162597135895221648[0]
+  //   Public signature debug description: component1(){}
+  operator fun component1(): String
+
+  // CHECK JS_IR NATIVE:
+  //   Mangled name: Some#component2(){}
+  //   Public signature: /Some.component2|3796717572321500973[0]
+  //   Public signature debug description: component2(){}
+  operator fun component2(): dynamic
+
+  // CHECK JS_IR NATIVE:
+  //   Mangled name: Some#copy(kotlin.String;<dynamic>){}
+  //   Public signature: /Some.copy|-666200579701757332[0]
+  //   Public signature debug description: copy(kotlin.String;<dynamic>){}
+  fun copy(a: String, b: dynamic): Some
+
+  // CHECK JS_IR NATIVE:
+  //   Mangled name: Some#equals(kotlin.Any?){}
+  //   Public signature: /Some.equals|4638265728071529943[0]
+  //   Public signature debug description: equals(kotlin.Any?){}
+  override operator fun equals(other: Any?): Boolean
+
+  // CHECK JS_IR NATIVE:
+  //   Mangled name: Some#hashCode(){}
+  //   Public signature: /Some.hashCode|3409210261493131192[0]
+  //   Public signature debug description: hashCode(){}
+  override fun hashCode(): Int
+
+  // CHECK JS_IR NATIVE:
+  //   Mangled name: Some#toString(){}
+  //   Public signature: /Some.toString|-1522858123163872138[0]
+  //   Public signature debug description: toString(){}
+  override fun toString(): String
+
+}
+
+// CHECK JS_IR NATIVE:
+//   Mangled name: #box(){}
+//   Public signature: /box|2173511048851971368[0]
+//   Public signature debug description: box(){}
+fun box(): String
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibIrTextTestCaseGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibIrTextTestCaseGenerated.java
index 6ff8e2deb6c..a9a2d10b84e 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibIrTextTestCaseGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibIrTextTestCaseGenerated.java
@@ -2283,6 +2283,11 @@ public class KlibIrTextTestCaseGenerated extends AbstractKlibIrTextTestCase {
                 runTest("compiler/testData/ir/irText/js/dynamic/dynamicExclExclOperator.kt");
             }
 
+            @TestMetadata("dynamicInDataClass.kt")
+            public void testDynamicInDataClass() throws Exception {
+                runTest("compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt");
+            }
+
             @TestMetadata("dynamicInfixCall.kt")
             public void testDynamicInfixCall() throws Exception {
                 runTest("compiler/testData/ir/irText/js/dynamic/dynamicInfixCall.kt");
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibJsIrTextTestCaseGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibJsIrTextTestCaseGenerated.java
index 161d5b744af..78e10f38b23 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibJsIrTextTestCaseGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/klib/KlibJsIrTextTestCaseGenerated.java
@@ -102,6 +102,11 @@ public class KlibJsIrTextTestCaseGenerated extends AbstractKlibJsIrTextTestCase
             runTest("compiler/testData/ir/irText/js/dynamic/dynamicExclExclOperator.kt");
         }
 
+        @TestMetadata("dynamicInDataClass.kt")
+        public void testDynamicInDataClass() throws Exception {
+            runTest("compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt");
+        }
+
         @TestMetadata("dynamicInfixCall.kt")
         public void testDynamicInfixCall() throws Exception {
             runTest("compiler/testData/ir/irText/js/dynamic/dynamicInfixCall.kt");
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirLightTreeJsIrTextTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirLightTreeJsIrTextTestGenerated.java
index ce9a98bda70..17d75268422 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirLightTreeJsIrTextTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirLightTreeJsIrTextTestGenerated.java
@@ -2617,6 +2617,12 @@ public class FirLightTreeJsIrTextTestGenerated extends AbstractFirLightTreeJsIrT
                 runTest("compiler/testData/ir/irText/js/dynamic/dynamicExclExclOperator.kt");
             }
 
+            @Test
+            @TestMetadata("dynamicInDataClass.kt")
+            public void testDynamicInDataClass() throws Exception {
+                runTest("compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt");
+            }
+
             @Test
             @TestMetadata("dynamicInfixCall.kt")
             public void testDynamicInfixCall() throws Exception {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsIrTextTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsIrTextTestGenerated.java
index 7598cda3032..e8a6ee6b4b7 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsIrTextTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsIrTextTestGenerated.java
@@ -2617,6 +2617,12 @@ public class FirPsiJsIrTextTestGenerated extends AbstractFirPsiJsIrTextTest {
                 runTest("compiler/testData/ir/irText/js/dynamic/dynamicExclExclOperator.kt");
             }
 
+            @Test
+            @TestMetadata("dynamicInDataClass.kt")
+            public void testDynamicInDataClass() throws Exception {
+                runTest("compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt");
+            }
+
             @Test
             @TestMetadata("dynamicInfixCall.kt")
             public void testDynamicInfixCall() throws Exception {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/ClassicJsIrTextTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/ClassicJsIrTextTestGenerated.java
index bddf89680fa..59001acaab7 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/ClassicJsIrTextTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/ClassicJsIrTextTestGenerated.java
@@ -2617,6 +2617,12 @@ public class ClassicJsIrTextTestGenerated extends AbstractClassicJsIrTextTest {
                 runTest("compiler/testData/ir/irText/js/dynamic/dynamicExclExclOperator.kt");
             }
 
+            @Test
+            @TestMetadata("dynamicInDataClass.kt")
+            public void testDynamicInDataClass() throws Exception {
+                runTest("compiler/testData/ir/irText/js/dynamic/dynamicInDataClass.kt");
+            }
+
             @Test
             @TestMetadata("dynamicInfixCall.kt")
             public void testDynamicInfixCall() throws Exception {