const getValue = (target, prop) => {
  if (prop === 'Math') return Math;
  const { expressions, data } = target;
  if (!expressions.has(prop)) return data.get(prop);
  const expression = expressions.get(prop);
  return expression();
};
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.