text: // Copyright 2018 Mathias Bynens. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  author: Mathias Bynens
  description: >
    Non-existent properties must not be supported in Unicode property escapes.
  esid: sec-static-semantics-unicodematchproperty-p
  negative:
    phase: parse
    type: SyntaxError
  features: [regexp-unicode-property-escapes]
  ---*/
  
  $DONOTEVALUATE();
  
  /\P{UnknownBinaryProperty}/u;
  