export default function normalizeToString(input) {
  // string or String object
  if (typeof input === 'string' || input instanceof String) return input.toString();

  // boolean value
  if (typeof input === 'boolean') return input.toString();

  // numeric value
  if (typeof input === 'number' || input instanceof Number) {
    // not a finite value - invalid input - return empty
    if (!Number.isFinite(input)) return '';

    // safe integer, return as-is
    if (Number.isSafeInteger(input)) return input.toString(10);

    // not a safe integer, return with 5 decimal places
    return input.toFixed(5); // fix to 4 decimal places
  }

  // if there's a JSON method, use the result of that
  if (typeof input.toJSON === 'function') {
    const ret = input.toJSON();
    if (typeof ret === 'string') return ret;
  }

  // unsupported value - empty string
  return '';
}