fix

Author: Alex D

src/emitterlua.ts

@@ -2737,6 +2737,7 @@ export class EmitterLua {
  }
 
  private processPostfixUnaryExpression(node: ts.PostfixUnaryExpression): void {
+ const op = node.operator == ts.SyntaxKind.PlusPlusToken ? '+' : '-';
  switch (node.operator) {
  case ts.SyntaxKind.PlusPlusToken:
  case ts.SyntaxKind.MinusMinusToken:
@@ -2745,16 +2746,14 @@ export class EmitterLua {
  this.processExpression(node.operand);
  this.functionContext.textCode.push(" = ");
  this.processExpression(node.operand);
- this.functionContext.textCode.push(" + 1");
+ this.functionContext.textCode.push(" " + op + " 1");
  } else {
  this.functionContext.textCode.push("(function () ");
  let opIndex = parseInt(node.pos.toFixed());
  if (opIndex < 0) {
  opIndex = 0;
  }
 
- const op = node.operator == ts.SyntaxKind.PlusPlusToken ? '+' : '-';
-
  this.functionContext.textCode.push("local op" + opIndex + " = (");
  this.processExpression(node.operand);
  this.functionContext.textCode.push(") ");

test/test.ts

@@ -1,4 +1,7 @@
-var someArray = [9, 2, 5]; 
- for (var item of someArray) { 
- console.log(item); 
- }
+let a = 1; 
+ let count = 0; 
+ while (a) { 
+ a--; 
+ count++; 
+ } 
+ console.log(count);