Dart SDK Spelling b, c, and d.

pkg/compiler/lib/src/resolution/semantic_visitor.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.semantics_visitor;
 
 import '../common.dart';
 import '../constants/expressions.dart';
 import '../elements/resolution_types.dart';
 import '../elements/elements.dart';
@@ skipping 312 matching lines @@
   ///
   /// For instance:
   ///
   ///     m(receiver) {
   ///       receiver.foo(null, 42);
   ///     }
   ///
   R visitDynamicPropertyInvoke(
       Send node, Node receiver, NodeList arguments, Selector selector, A arg);
 
-  /// Conditinal invocation of the property defined by [selector] on [receiver]
+  /// Conditional invocation of the property defined by [selector] on [receiver]
   /// with [arguments], if [receiver] is not null.
   ///
   /// For instance:
   ///
   ///     m(receiver) {
   ///       receiver?.foo(null, 42);
   ///     }
   ///
   R visitIfNotNullDynamicPropertyInvoke(
       Send node, Node receiver, NodeList arguments, Selector selector, A arg);
@@ skipping 1850 matching lines @@
   ///
   /// For instance:
   ///
   ///     import 'foo.dart' as p;
   ///
   ///     m() => p ??= 42;
   ///
   R errorInvalidSetIfNull(Send node, ErroneousElement error, Node rhs, A arg);
 
   /// If-null assignment expression of [rhs] to the class type literal
-  /// [contant]. That is, [rhs] is only evaluated and assigned, if the value
+  /// [constant]. That is, [rhs] is only evaluated and assigned, if the value
   /// is of the [constant] is `null`. The behavior is thus equivalent to a type
   /// literal access.
   ///
   /// For instance:
   ///
   ///     class C {}
   ///     m(rhs) => C ??= rhs;
   ///
   R visitClassTypeLiteralSetIfNull(
       Send node, ConstantExpression constant, Node rhs, A arg);
@@ skipping 2496 matching lines @@
   ///
   /// For instance `this._(42)` in:
   ///
   ///     class C {
   ///       C() : this._(42);
   ///     }
   ///
   R errorUnresolvedThisConstructorInvoke(
       Send node, Element element, NodeList arguments, Selector selector, A arg);
 }