define: DUK_OPT_NO_SECTION_B
introduced: 1.0.0
tags:
  - ecmascript
description: >
  Disable optional features in ECMAScript specification
  Annex B: http://www.ecma-international.org/ecma-262/5.1/#sec-B.
  Causes escape(), unescape(), and String.prototype.substr() to throw
  an error.