define: DUK_OPT_NO_NONSTD_STRING_FROMCHARCODE_32BIT
introduced: 1.2.0
tags:
  - ecmascript
description: >
  By default Duktape String.fromCharCode() allows 32-bit codepoints which is
  non-compliant (the E5.1 specification has a ToUint16() coercion for the
  codepoints) but useful because Duktape supports non-BMP strings.  This
  feature option restores the compliant behavior.