anchor.diff:            _computeHints(file, unit);
           });
         }
  +
  +      if (_analysisOptions.lint) {
  +        units.forEach((file, unit) {
  +          _computeLints(file, unit);
  +        });
  +      }
       } finally {
         _context.dispose();
       }
  
positive.code: 
  import 'package:analyzer/context/declared_variables.dart';
  import 'package:analyzer/dart/ast/ast.dart';
  import 'package:analyzer/dart/element/element.dart';
  import 'package:analyzer/error/error.dart';
  import 'package:analyzer/error/listener.dart';
  import 'package:analyzer/src/context/context.dart';
  import 'package:analyzer/src/dart/analysis/file_state.dart';
  import 'package:analyzer/src/dart/ast/ast.dart';
  import 'package:analyzer/src/dart/constant/evaluation.dart';
  import 'package:analyzer/src/dart/constant/utilities.dart';
  import 'package:analyzer/src/error/codes.dart';
  
negative.code: import 'package:analyzer/src/generated/error_verifier.dart';
  import 'package:analyzer/src/generated/resolver.dart';
  import 'package:analyzer/src/generated/source.dart';
  import 'package:analyzer/src/services/lint.dart';
  import 'package:analyzer/src/summary/package_bundle_reader.dart';
  import 'package:analyzer/src/task/dart.dart';
  import 'package:analyzer/src/task/strong/checker.dart';
  