tap-debug/src/utils.js

Debug/trace output of a function. For use with the tap() method of promises and functional programming pipelines.

'use strict';

function isString(object) {
  return typeof object === 'string';
}

function isObject(object) {
  return typeof object === 'object';
}

function identity(object) {
  return !!object;
}

function extend(destination, source) {
  for (var property in source) {
    if (source[property] && source[property].constructor &&
                            source[property].constructor === Object) {
      destination[property] = destination[property] || {};
      extend(destination[property], source[property]);
    } else {
      destination[property] = source[property];
    }
  }
  return destination;
}

module.exports.isString = isString;
module.exports.isObject = isObject;
module.exports.isArray = Array.isArray;
module.exports.identity = identity;
module.exports.extend = extend;