define: DUK_USE_NONSTD_ARRAY_MAP_TRAILER
introduced: 1.0.0
removed: 2.3.0
default: true
tags:
  - ecmascript
  - compliance
description: >
  This option was removed in 2.3.0 as it was unnecessary and in essence fixing
  a Duktape bug.  ES5.0/ES5.1 already behave like ES2015 in that trailing gaps
  in the input don't affect the result length.  The result array is created
  with a length based on the input array in Step 6 of ES5.1 Section 15.4.4.19
  and subsequent index writes don't affect the length.