Function objectToString

docs/tests/v2/es6/js/sanddance.js:8209–8211

(o)

exports.isBuffer = require('./support/isBuffer');

function objectToString(o) {
  return Object.prototype.toString.call(o);
}

function pad(n) {
  return n < 10 ? '0' + n.toString(10) : n.toString(10);