anchor.diff:  
   // tests for nested lists
   var l3 = new A([ // LINT
  -                 // ^^^^ Should be OK (https://github.com/dart-lang/linter/issues/885)
     []]); // LINT
   var l4 = new A([ // LINT
     const[]]); // OK
  
positive.code: 
  // tests with maps and parenthesis
  var l6 = new A({1: // LINT
                     // ^^^^ Should be OK (https://github.com/dart-lang/linter/issues/885)
    []});// LINT
  var l7 = new A(const {1: const []});// OK
  var l8 = new A((([])));// LINT
  
negative.code: 
  // tests for nested maps
  var m3 = new A({ // LINT
    1: {}}); // LINT
  var m4 = new A({ // LINT
    1: const{}}); // OK
  