Spelling fixes e to i.

pkg/compiler/lib/src/serialization/values.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.
 
-/// Class hiarchy for semantic wrapping of serializable values.
+/// Class hierarchy for semantic wrapping of serializable values.
 
 library dart2js.serialization.values;
 
 import '../constants/expressions.dart';
 import '../elements/resolution_types.dart';
 import '../elements/elements.dart';
 import 'keys.dart';
 
 /// Intermediate representation of a serializable value.
 ///
 /// Serializable values are
 ///    * [bool],
 ///    * [int],
 ///    * [double],
 ///    * [String],
 ///    * enum values,
 ///    * [ConstantExpression],
 ///    * [DartType],
 ///    * [Element],
 ///    * [Uri],
 ///    * lists of serializeable values,
 ///    * maps from arbitrary strings to serializable values; these are called
 ///         `Map` values, and
 ///    * maps from [Key] to serializable values; these are called `Object`
 ///         values.
 ///
 /// The distinction between map and object values is chosen to provide a more
 /// robust and checkable implementation of the latter; since the keys are drawn
 /// from a fixed typed set of values, consistency between serialization and
-/// deserialization is easierly maintained.
+/// deserialization is more easily maintained.
 abstract class Value {
   accept(ValueVisitor visitor, arg);
 }
 
 class ElementValue implements Value {
   final Element element;
   final Value id;
 
   ElementValue(this.element, this.id);
 
@@ skipping 123 matching lines @@
   R visitBool(BoolValue value, A arg);
   R visitInt(IntValue value, A arg);
   R visitDouble(DoubleValue value, A arg);
   R visitString(StringValue value, A arg);
   R visitObject(ObjectValue value, A arg);
   R visitMap(MapValue value, A arg);
   R visitList(ListValue value, A arg);
   R visitEnum(EnumValue value, A arg);
   R visitUri(UriValue value, A arg);
 }