diff --git a/js/js.ast/src/org/jetbrains/kotlin/js/common/SourceInfo.java b/js/js.ast/src/org/jetbrains/kotlin/js/common/SourceInfo.java
deleted file mode 100644
index 9e793a496fb..00000000000
--- a/js/js.ast/src/org/jetbrains/kotlin/js/common/SourceInfo.java
+++ /dev/null
@@ -1,59 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-package org.jetbrains.kotlin.js.common;
-
-import org.jetbrains.kotlin.js.Source;
-
-import java.io.Serializable;
-
-/**
- * Tracks file and line information for AST nodes.
- */
-public interface SourceInfo extends Serializable {
-
-  /**
-   * The source code provider.
-   */
-  Source getSource();
-
-  /**
-   * @return A 1-based line number into the original source file indicating
-   * where the source fragment begins.
-   */
-  int getLine();
-
-  /**
-   * @return A 1-based column number into the original source file indicating
-   * where the source fragment begins.
-   */
-  int getColumn();
-
-  /**
-   * Returns the character index into the original source file indicating
-   * where the source fragment corresponding to this node begins.
-   * 
-   * <p>
-   * The parser supplies useful well-defined source ranges to the nodes it creates.
-   *
-   * @return the 0-based character index, or <code>-1</code>
-   *    if no source startPosition information is recorded for this node
-   * @see #getLength()
-   * @see HasSourceInfo#setSourceLocation(Source, int, int, int, int)
-   */
-  int getStart();
-
-  /**
-   * Returns the length in characters of the original source file indicating
-   * where the source fragment corresponding to this node ends.
-   * <p>
-   * The parser supplies useful well-defined source ranges to the nodes it creates.
-   *
-   * @return a (possibly 0) length, or <code>0</code>
-   *    if no source source position information is recorded for this node
-   * @see #getStart()
-   * @see HasSourceInfo#setSourceLocation(Source, int, int, int, int)
-   */
-  int getLength();
-}
diff --git a/js/js.ast/src/org/jetbrains/kotlin/js/common/SourceInfoImpl.java b/js/js.ast/src/org/jetbrains/kotlin/js/common/SourceInfoImpl.java
deleted file mode 100644
index fb5b76dfc7c..00000000000
--- a/js/js.ast/src/org/jetbrains/kotlin/js/common/SourceInfoImpl.java
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright 2010-2017 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.kotlin.js.common;
-
-import org.jetbrains.kotlin.js.Source;
-
-public class SourceInfoImpl implements SourceInfo {
-    protected Source source = null;
-    protected int line = -1;
-    protected int column = -1;
-    protected int start = -1;
-    protected int length = -1;
-
-    public SourceInfoImpl(Source source, int line, int column, int start, int length) {
-        this.source = source;
-        this.line = line;
-        this.column = column;
-        this.start = start;
-        this.length = length;
-    }
-
-    @Override
-    public Source getSource() {
-        return source;
-    }
-
-    @Override
-    public int getLine() {
-        return line;
-    }
-
-    @Override
-    public int getColumn() {
-        return column;
-    }
-
-    @Override
-    public int getStart() {
-        return start;
-    }
-
-    @Override
-    public int getLength() {
-        return length;
-    }
-}