Function numOf

benchmarks/audit/wester.ts:81–84

(boxed: any)

  catch { return null; }
};
const numOf = (boxed: any): number | null => {
  try { const x = reOf(boxed.N()); return isFinite(x) ? x : null; }
  catch { return null; }
};

function symbolsOf(e: any, acc = new Set<string>()): Set<string> {
  if (typeof e === 'string') { if (!(e in CONSTS) && /^[a-zA-Z][a-zA-Z0-9]*$/.test(e)) acc.add(e); }