How to use the lossless-json.parse function in lossless-json

if (args.length === 1 && (args[0] === '-v' || args[0] === '--version')) {
      stderr.write(require('./package.json').version + '\n')
      process.exit(2)
    }
    if (args.length === 1 && args[0] === '--life') {
      require('./bang')
      return
    }

    input = fs.readFileSync(args[0]).toString('utf8')
    filename = path.basename(args[0])
    global.FX_FILENAME = filename
    args.shift()
  }

  const json = JSON.parse(input)

  if (args.length === 0 && stdout.isTTY) {
    require('./fx')(filename, json)
    return
  }

  apply(json)
}

}).then((response) => {
            let body = lossless_json.parse(response.body, this._lossless_converter);

            if (body.returnCode && body.returnCode == "0000"){
                debug(`Completed confirming payment.`);
                debug(body);
                return body;
            } else {
                debug(`Failed to confirm payment.`);
                debug(body);
                return Promise.reject(new Error(body));
            }
        })
    }

const parse = (str, configs) => {
  let result
  try {
    result = _.get(configs, 'options.support-big-int')
      ? LosslessJSON.parse(str, _reviver)
      : JSON.parse(str)
  } catch (e) {
    throw new Error(`failed to parse json (message: "${e.message}") - source: ${JSON.stringify(str)}`)
  }

  return result
}

function apply(cb, input) {
  let json
  try {
    json = JSON.parse(input)
  } catch (e) {
    process.stderr.write(e.toString() + '\n')
    return
  }
  cb(json)
}