diff --git a/src/App.tsx b/src/App.tsx
index 24cf6cb..83c7309 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -12,10 +12,6 @@ const Resolve = lazy(() => import("./resolve/Resolve"));
 type T = typeof Resolve;
 
 class App extends Component {
-  constructor(props: {}) {
-    super(props);
-  }
-
   state = {};
 
   render() {
diff --git a/src/import/prefix_cleaner.ts b/src/import/prefix_cleaner.ts
index 6ef1321..f52fe62 100644
--- a/src/import/prefix_cleaner.ts
+++ b/src/import/prefix_cleaner.ts
@@ -8,7 +8,7 @@ export function findCommonPrefix(strings: string[]): string | null {
       let matched = false;
       for (let splitPoint = k.length; splitPoint > 0; splitPoint--) {
         const split = k.slice(0, splitPoint);
-        if (commonPrefix.indexOf(split) != -1) {
+        if (commonPrefix.indexOf(split) !== -1) {
           commonPrefix = split;
           matched = true;
           break;
diff --git a/src/import/rollup/Import.tsx b/src/import/rollup/Import.tsx
index ddb5f95..22059f6 100644
--- a/src/import/rollup/Import.tsx
+++ b/src/import/rollup/Import.tsx
@@ -4,7 +4,6 @@ import { readFileAsText, readFilesAsText } from "../file_reader";
 import { processImports, buildImportErrorReport } from "../process_imports";
 import { ImportProps, ImportResolveState, ImportState } from "../../types";
 
-
 // noopener noreferrer
 class RollupImport extends Component<ImportProps, ImportState> {
   sourceMapInput?: React.RefObject<HTMLInputElement & { files: FileList }>;