diff --git a/platform/script-debugger/debugger-ui/src/com/jetbrains/javascript/debugger/FileUrlMapper.java b/platform/script-debugger/debugger-ui/src/com/jetbrains/javascript/debugger/FileUrlMapper.java
new file mode 100644
index 000000000000..b079afcddcd1
--- /dev/null
+++ b/platform/script-debugger/debugger-ui/src/com/jetbrains/javascript/debugger/FileUrlMapper.java
@@ -0,0 +1,54 @@
+package com.jetbrains.javascript.debugger;
+
+import com.intellij.openapi.extensions.ExtensionPointName;
+import com.intellij.openapi.fileEditor.OpenFileDescriptor;
+import com.intellij.openapi.fileTypes.FileType;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.pom.Navigatable;
+import com.intellij.util.Url;
+import com.intellij.util.containers.ObjectIntHashMap;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+
+public abstract class FileUrlMapper {
+  public static final ExtensionPointName<FileUrlMapper> EP_NAME = ExtensionPointName.create("com.jetbrains.fileUrlMapper");
+
+  @NotNull
+  public abstract List<Url> getUrls(@NotNull VirtualFile file, @NotNull Project project, @Nullable String currentAuthority);
+
+  /**
+   * Optional to implement, useful if default navigation position to source file is not equals to 0:0 (java file for example)
+   */
+  @Nullable
+  public Navigatable getNavigatable(@NotNull Url url, @NotNull Project project, @Nullable Url requestor) {
+    VirtualFile file = getFile(url, project, requestor);
+    return file == null ? null : new OpenFileDescriptor(project, file);
+  }
+
+  @Nullable
+  public abstract VirtualFile getFile(@NotNull Url url, @NotNull Project project, @Nullable Url requestor);
+
+  /**
+   * Optional to implement, sometimes you cannot build URL, but can match.
+   * Lifetime: resolve session lifetime. Could be called multiple times: n <= total sourcemap count
+   */
+  @Nullable
+  public SourceResolver createSourceResolver(@NotNull VirtualFile file, @NotNull Project project) {
+    return null;
+  }
+
+  @Nullable
+  public FileType getFileType(@NotNull Url url) {
+    return null;
+  }
+
+  public static abstract class SourceResolver {
+    /**
+     * Return -1 if no match
+     */
+    public abstract int resolve(@NotNull ObjectIntHashMap<Url> map, @NotNull Project project);
+  }
+}
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