chore(compiler): Enable strict property access TS compiler flag. (#6255)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

integration-tests/write_file.test.ts

@@ -58,7 +58,8 @@ describe('write_file', () => {
     expect(newFileContent).not.toBe('');
 
     // Log success info if verbose
-    if (process.env.VERBOSE === 'true') {
+    vi.stubEnv('VERBOSE', 'true');
+    if (process.env['VERBOSE'] === 'true') {
       console.log(
         'File created successfully with content:',
         newFileContent.substring(0, 100) + '...',