How to use the pigpio.Gpio.PUD_UP function in pigpio

export interface IConfig {
  pin: number | string;
  pullResistor?: number;
}

interface INormalizedConfig {
  pin: number | string;
  pullResistor: number;
}

export const LOW = 0;
export const HIGH = 1;

export const PULL_NONE = Gpio.PUD_OFF;
export const PULL_DOWN = Gpio.PUD_DOWN;
export const PULL_UP = Gpio.PUD_UP;

function parseConfig(config: number | string | IConfig): INormalizedConfig {
  let pin: number | string;
  let pullResistor: number;
  if (typeof config === 'number' || typeof config === 'string') {
    pin = config;
    pullResistor = PULL_NONE;
  } else if (typeof config === 'object') {
    pin = config.pin;
    pullResistor = config.pullResistor || PULL_NONE;
    if ([ PULL_NONE, PULL_DOWN, PULL_UP].indexOf(pullResistor) === -1) {
      throw new Error('Invalid pull resistor option ' + pullResistor);
    }
  } else {
    throw new Error('Invalid pin or configuration');
  }