bunnymq/src/modules/retrocompat-config.js

BunnyMq is a RabbitMq wrapper

// deprecated configuration property names
function oldConfigNames(config) {
  const configuration = Object.assign({}, config);
  if (configuration.amqpUrl) {
    configuration.host = configuration.amqpUrl;
  }

  if (configuration.amqpPrefetch) {
    configuration.prefetch = configuration.amqpPrefetch;
  }

  if (configuration.amqpRequeue) {
    configuration.requeue = configuration.amqpRequeue;
  }

  if (configuration.amqpTimeout) {
    configuration.timeout = configuration.amqpTimeout;
  }
  return configuration;
}

// deprecated env vars to configure the module
function envVars(config) {
  const configuration = Object.assign({}, config);
  if (process.env.AMQP_URL && !configuration.host) {
    configuration.host = process.env.AMQP_URL;
  }

  if (process.env.LOCAL_QUEUE && !configuration.consumerSuffix) {
    configuration.consumerSuffix = process.env.LOCAL_QUEUE;
  }

  if (process.env.AMQP_DEBUG && !configuration.transport) {
    configuration.transport = console;
  }

  return configuration;
}

/**
 * Retrocompatibility module to keep backward compat over configuration / env vars
 * @param  {object} config A BunnyMQ configuration object
 * @return {object}        Updated config object
 */
module.exports = (config) => {
  let configuration = Object.assign({}, config);
  configuration = envVars(configuration);
  configuration = oldConfigNames(configuration);

  return configuration;
};