Merge pull request keichi#157 from mohd-akram/improve-array-perf

Improve array performance

Author: keichi

lib/binary_parser.ts

@@ -1009,11 +1009,11 @@ export class Parser {
       );
     } else if (lengthInBytes !== undefined) {
       ctx.pushCode(
-        `for (var ${counter} = offset; offset - ${counter} < ${lengthInBytes}; ) {`
+        `for (var ${counter} = offset + ${lengthInBytes}; offset < ${counter}; ) {`
       );
     } else {
       ctx.pushCode(
-        `for (var ${counter} = 0; ${counter} < ${length}; ${counter}++) {`
+        `for (var ${counter} = ${length}; ${counter} > 0; ${counter}--) {`
       );
     }