fix navigation between files in the same directory

ui/shared/monaco/utils/getFullPathOfImportedFile.test.ts

@@ -9,6 +9,15 @@ it('construct correct absolute path', () => {
   expect(result).toBe('/foo/abc/contract.sol');
 });
 
+it('construct correct absolute path if file is in the current directory', () => {
+  const result = getFullPathOfImportedFile(
+    '/abc/index.sol',
+    './contract.sol',
+  );
+
+  expect(result).toBe('/abc/contract.sol');
+});
+
 it('returns undefined if imported file is outside the base file folder', () => {
   const result = getFullPathOfImportedFile(
     '/index.sol',

ui/shared/monaco/utils/getFullPathOfImportedFile.ts

@@ -19,7 +19,7 @@ export default function getFullPathOfImportedFile(baseFilePath: string, imported
 
   const result: Array<string> = baseFileChunks.slice(0, -1);
 
-  for (let index = 0; index < importedFileChunks.length - 1; index++) {
+  for (let index = 0; index < importedFileChunks.length; index++) {
     const element = importedFileChunks[index];
 
     if (element === '.') {
@@ -41,7 +41,5 @@ export default function getFullPathOfImportedFile(baseFilePath: string, imported
     return;
   }
 
-  result.push(importedFileChunks[importedFileChunks.length - 1]);
-
   return '/' + result.join('/');
 }