diff --git a/front_end/formatter/ScriptFormatter.js b/front_end/formatter/ScriptFormatter.js
index d1a15320a4..d6b0619cbb 100644
--- a/front_end/formatter/ScriptFormatter.js
+++ b/front_end/formatter/ScriptFormatter.js
@@ -91,13 +91,23 @@ export class ScriptFormatter {
    * @param {function(string, !FormatterSourceMapping)} callback
    */
   constructor(mimeType, content, callback) {
-    content = content.replace(/\r\n?|[\n\u2028\u2029]/g, '\n').replace(/^\uFEFF/, '');
+    this._mimeType = mimeType;
+    this._originalContent = content.replace(/\r\n?|[\n\u2028\u2029]/g, '\n').replace(/^\uFEFF/, '');
     this._callback = callback;
-    this._originalContent = content;
 
-    formatterWorkerPool()
-        .format(mimeType, content, Common.Settings.Settings.instance().moduleSetting('textEditorIndent').get())
-        .then(this._didFormatContent.bind(this));
+    this._initialize();
+  }
+
+  async _initialize() {
+    const pool = formatterWorkerPool();
+    const indent = Common.Settings.Settings.instance().moduleSetting('textEditorIndent').get();
+
+    const formatResult = await pool.format(this._mimeType, this._originalContent, indent);
+    if (!formatResult) {
+      this._callback(this._originalContent, new IdentityFormatterSourceMapping());
+    } else {
+      this._didFormatContent(formatResult);
+    }
   }
 
   /**