Inference through conditional expressions

test/dart_codegen/expect/convert/json.dart

 part of dart.convert;
  class JsonUnsupportedObjectError extends Error {final unsupportedObject;
  final cause;
  JsonUnsupportedObjectError(this.unsupportedObject, {
   this.cause}
 );
  String toString() {
   if (cause != null) {
     return "Converting object to an encodable object failed.";
     }
@@ skipping 184 matching lines @@
  static const int CHAR_0 = 0x30;
  static const int BACKSLASH = 0x5c;
  static const int CHAR_b = 0x62;
  static const int CHAR_f = 0x66;
  static const int CHAR_n = 0x6e;
  static const int CHAR_r = 0x72;
  static const int CHAR_t = 0x74;
  static const int CHAR_u = 0x75;
  final List _seen = new List();
  final Function _toEncodable;
- _JsonStringifier(Object _toEncodable(Object o)) : _toEncodable = ((__x14) => DEVC$RT.cast(__x14, dynamic, Function, "DynamicCast", """line 547, column 24 of dart:convert/json.dart: """, __x14 is Function, true))((_toEncodable != null) ? _toEncodable : _defaultToEncodable);
+ _JsonStringifier(Object _toEncodable(Object o)) : _toEncodable = (_toEncodable != null) ? _toEncodable : _defaultToEncodable;
  void writeString(String characters);
  void writeStringSlice(String characters, int start, int end);
  void writeCharCode(int charCode);
  void writeNumber(num number);
  static int hexDigit(int x) => x < 10 ? 48 + x : 87 + x;
  void writeStringContent(String s) {
 int offset = 0;
  final int length = s.length;
  for (int i = 0; i < length; i++) {
 int charCode = s.codeUnitAt(i);
@@ skipping 323 matching lines @@
 for (int i = 0; i < indentLength; i++) {
 writeByte(indent[i]);
 }
 }
 }
 }
 }
  typedef Object __CastType6(Object __u7);
  typedef dynamic __CastType8(dynamic __u9);
  typedef dynamic __CastType11(Object __u12);