fix temp used in postfix ops

lib/runtime/dart/convert.js

 var convert;
 (function(exports) {
   'use strict';
   let ASCII = new AsciiCodec();
   let _ASCII_MASK = 127;
   let _allowInvalid = Symbol('_allowInvalid');
   let Codec$ = dart.generic(function(S, T) {
     class Codec extends core.Object {
       Codec() {
       }
@@ skipping 1167 matching lines @@
       this.writeByte(128 | dart.notNull(charCode) >> 6 & 63);
       this.writeByte(128 | dart.notNull(charCode) & 63);
     }
     writeByte(byte) {
       dart.assert(dart.notNull(byte) <= 255);
       if (this.index === this.buffer.length) {
         dart.dinvokef(this.addChunk, this.buffer, 0, this.index);
         this.buffer = new typed_data.Uint8List(this.bufferSize);
         this.index = 0;
       }
-      this.buffer.set(((x) => this.index = dart.notNull(x$) + 1, x$).bind(this)(this.index), byte);
+      this.buffer.set(((x$) => this.index = dart.notNull(x$) + 1, x$).bind(this)(this.index), byte);
     }
   }
   class _JsonUtf8StringifierPretty extends dart.mixin(_JsonUtf8Stringifier, _JsonPrettyPrintMixin) {
     _JsonUtf8StringifierPretty(toEncodableFunction, indent, bufferSize, addChunk) {
       this.indent = indent;
       super._JsonUtf8Stringifier(toEncodableFunction, dart.as(bufferSize, core.int), dart.as(addChunk, core.Function));
     }
     writeIndentation(count) {
       let indent = this.indent;
       let indentLength = indent.length;
@@ skipping 503 matching lines @@
       this[_bufferIndex] = 0;
     }
     static [_createBuffer$](size) {
       return new typed_data.Uint8List(size);
     }
     [_writeSurrogate](leadingSurrogate, nextCodeUnit) {
       if (_isTailSurrogate(nextCodeUnit)) {
         let rune = _combineSurrogatePair(leadingSurrogate, nextCodeUnit);
         dart.assert(dart.notNull(rune) > dart.notNull(_THREE_BYTE_LIMIT));
         dart.assert(dart.notNull(rune) <= dart.notNull(_FOUR_BYTE_LIMIT));
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 240 | dart.notNull(rune) >> 18);
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) >> 12 & 63);
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) >> 6 & 63);
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) & 63);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 240 | dart.notNull(rune) >> 18);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) >> 12 & 63);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) >> 6 & 63);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) & 63);
         return true;
       } else {
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 224 | dart.notNull(leadingSurrogate) >> 12);
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(leadingSurrogate) >> 6 & 63);
-        this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(leadingSurrogate) & 63);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 224 | dart.notNull(leadingSurrogate) >> 12);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(leadingSurrogate) >> 6 & 63);
+        this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(leadingSurrogate) & 63);
         return false;
       }
     }
     [_fillBuffer](str, start, end) {
       if (start !== end && dart.notNull(_isLeadSurrogate(str.codeUnitAt(dart.notNull(end) - 1)))) {
         end = dart.notNull(end) - 1;
       }
       let stringIndex = null;
       for (stringIndex = start; dart.notNull(stringIndex) < dart.notNull(end); stringIndex = dart.notNull(stringIndex) + 1) {
         let codeUnit = str.codeUnitAt(stringIndex);
         if (dart.notNull(codeUnit) <= dart.notNull(_ONE_BYTE_LIMIT)) {
           if (dart.notNull(this[_bufferIndex]) >= dart.notNull(this[_buffer].length))
             break;
-          this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), codeUnit);
+          this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), codeUnit);
         } else if (_isLeadSurrogate(codeUnit)) {
           if (dart.notNull(this[_bufferIndex]) + 3 >= dart.notNull(this[_buffer].length))
             break;
           let nextCodeUnit = str.codeUnitAt(dart.notNull(stringIndex) + 1);
           let wasCombined = this[_writeSurrogate](codeUnit, nextCodeUnit);
           if (wasCombined)
             stringIndex = dart.notNull(stringIndex) + 1;
         } else {
           let rune = codeUnit;
           if (dart.notNull(rune) <= dart.notNull(_TWO_BYTE_LIMIT)) {
             if (dart.notNull(this[_bufferIndex]) + 1 >= dart.notNull(this[_buffer].length))
               break;
-            this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 192 | dart.notNull(rune) >> 6);
-            this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) & 63);
+            this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 192 | dart.notNull(rune) >> 6);
+            this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) & 63);
           } else {
             dart.assert(dart.notNull(rune) <= dart.notNull(_THREE_BYTE_LIMIT));
             if (dart.notNull(this[_bufferIndex]) + 2 >= dart.notNull(this[_buffer].length))
               break;
-            this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 224 | dart.notNull(rune) >> 12);
-            this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) >> 6 & 63);
-            this[_buffer].set(((x) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) & 63);
+            this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 224 | dart.notNull(rune) >> 12);
+            this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) >> 6 & 63);
+            this[_buffer].set(((x$) => this[_bufferIndex] = dart.notNull(x$) + 1, x$).bind(this)(this[_bufferIndex]), 128 | dart.notNull(rune) & 63);
           }
         }
       }
       return stringIndex;
     }
   }
   dart.defineNamedConstructor(_Utf8Encoder, 'withBufferSize');
   _Utf8Encoder._DEFAULT_BYTE_BUFFER_SIZE = 1024;
   class _Utf8EncoderSink extends dart.mixin(_Utf8Encoder, StringConversionSinkMixin) {
     _Utf8EncoderSink(sink$) {
@@ skipping 204 matching lines @@
             }
           while (dart.notNull(i) < dart.notNull(endIndex)) {
             let oneBytes = scanOneByteCharacters(codeUnits, i);
             if (dart.notNull(oneBytes) > 0) {
               this[_isFirstCharacter] = false;
               addSingleBytes(i, dart.notNull(i) + dart.notNull(oneBytes));
               i = oneBytes;
               if (i === endIndex)
                 break;
             }
-            let unit = codeUnits.get(((x) => i = dart.notNull(x$) + 1, x$)(i));
+            let unit = codeUnits.get(((x$) => i = dart.notNull(x$) + 1, x$)(i));
             if (dart.notNull(unit) < 0) {
               if (!dart.notNull(this[_allowMalformed])) {
                 throw new core.FormatException(`Negative UTF-8 code unit: -0x${(-dart.notNull(unit)).toRadixString(16)}`);
               }
               this[_stringSink].writeCharCode(UNICODE_REPLACEMENT_CHARACTER_RUNE);
             } else {
               dart.assert(dart.notNull(unit) > dart.notNull(_ONE_BYTE_LIMIT));
               if ((dart.notNull(unit) & 224) === 192) {
                 value = dart.notNull(unit) & 31;
                 expectedUnits = extraUnits = 1;
@@ skipping 330 matching lines @@
   exports.LineSplitter = LineSplitter;
   exports.StringConversionSink = StringConversionSink;
   exports.ClosableStringSink = ClosableStringSink;
   exports.UNICODE_REPLACEMENT_CHARACTER_RUNE = UNICODE_REPLACEMENT_CHARACTER_RUNE;
   exports.UNICODE_BOM_CHARACTER_RUNE = UNICODE_BOM_CHARACTER_RUNE;
   exports.UTF8 = UTF8;
   exports.Utf8Codec = Utf8Codec;
   exports.Utf8Encoder = Utf8Encoder;
   exports.Utf8Decoder = Utf8Decoder;
 })(convert || (convert = {}));