Fixed LineGutter declaration

src/components/LineGutter/index.tsx

@@ -1,31 +1,27 @@
-import React, { Component } from 'react';
+import React, { Component } from "react";
 
-import styles from './index.module.css';
+import styles from "./index.module.css";
 
 export interface LineGutterProps {
-	/**
-	 * The gutter object
-	 */
-	gutter: React.ReactNode;
-}
-
-interface LineGutterProps {
-	gutter?: unknown;
+    /**
+     * The gutter object
+     */
+    gutter: React.ReactNode;
 }
 
 /**
  * The gutter is an element between the line number and content.
  */
 export default class LineGutter extends Component<LineGutterProps> {
-	static defaultProps = {
-		gutter: null,
-	};
+    static defaultProps = {
+        gutter: null,
+    };
 
-	render() {
-		const { gutter } = this.props;
+    render() {
+        const { gutter } = this.props;
 
-		return (
-			<span className={`log-gutter ${styles.lineGutter}`}>{gutter}</span>
-		);
-	}
+        return (
+            <span className={`log-gutter ${styles.lineGutter}`}>{gutter}</span>
+        );
+    }
 }