使用Chance，随机生成中国电话号码

generateZhPhone.js

let chance = require('chance')();
function generatePhone(nums) {
  if (!nums){
    nums = 1;
  }

  return chance.unique(function generatePhone() {
    let phone = '1';
    phone+= chance.string({length: 1, pool: '34578'});
    phone+= chance.string({length: 9, pool: '9876543210'});
    return phone;
  }, nums, { country: 'uk', mobile: true });
}