代码含二元表达式存在问题

[duyinghua]

当测试代码片段含有二元表达式时存在死循环问题，如：

var test = function (a, b){
   return a > 20 ? a : b
}
console.log(test(10, 1))

[duyinghua]

尝试效仿IfStatement的解析，改动compiler.ts后可行，望作者CR并修复问题

case 'ConditionalExpression': {
         const endLabel = this.createLabelName('cond_end');
         const altLabel = this.createLabelName('cond_alt');
         const { test, consequent, alternate } = expr;
         this.compileExpression(test);
-        this.writeLabel(altLabel);
+        this.writeReference(alternate ? altLabel : endLabel);
         this.writeOp(OpCode.JUMPNOT);
         this.compileExpression(consequent);
-        this.writeReference(endLabel);
-        this.writeOp(OpCode.JUMP);
-        this.writeLabel(altLabel);
-        this.compileExpression(alternate);
+        if (alternate) {
+          this.writeReference(endLabel);
+          this.writeOp(OpCode.JUMP);
+          this.writeLabel(altLabel);
+          this.compileExpression(alternate);
+        }
         this.writeLabel(endLabel);
         break;
       }