text: // Copyright (C) 2019 Leo Balter. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  esid: prod-NumericLiteralSeparator
  description: >
    NumericLiteralSeparator may not be the last digit character of a
    DecimalLiteral
  info: |
    NumericLiteral ::
      DecimalIntegerLiteral BigIntLiteralSuffix
      NumericLiteralBase BigIntLiteralSuffix
  
    NumericLiteralBase ::
      BinaryIntegerLiteral
      OctalIntegerLiteral
      HexIntegerLiteral
  
    BigIntLiteralSuffix :: n
  
    NumericLiteralSeparator ::
      _
  
    DecimalLiteral ::
      DecimalIntegerLiteral . DecimalDigits_opt ExponentPart_opt
  
    DecimalDigits ::
      ...
      DecimalDigits NumericLiteralSeparator DecimalDigit
  
  negative:
    phase: parse
    type: SyntaxError
  features: [BigInt, numeric-separator-literal]
  ---*/
  
  $DONOTEVALUATE();
  
  10_n;
  