@segment/isodate-traverse/lib/index.js

Traverse an object and convert all ISO strings into Dates.

'use strict';

var isodate = require('@segment/isodate');

/**
 * Expose `traverse`.
 */
module.exports = traverse;

/**
 * Recursively traverse an object or array, and convert
 * all ISO date strings parse into Date objects.
 *
 * @param {Object} input - object, array, or string to convert
 * @param {Boolean} strict - only convert strings with year, month, and date
 * @return {Object}
 */
function traverse(input, strict) {
  if (strict === undefined) strict = true;
  if (input && typeof input === 'object') {
    return traverseObject(input, strict);
  } else if (Array.isArray(input)) {
    return traverseArray(input, strict);
  } else if (isodate.is(input, strict)) {
    return isodate.parse(input);
  }
  return input;
}

/**
 * Object traverser helper function.
 *
 * @param {Object} obj - object to traverse
 * @param {Boolean} strict - only convert strings with year, month, and date
 * @return {Object}
 */
function traverseObject(obj, strict) {
  Object.keys(obj).forEach(function(key) {
    obj[key] = traverse(obj[key], strict);
  });
  return obj;
}

/**
 * Array traverser helper function
 *
 * @param {Array} arr - array to traverse
 * @param {Boolean} strict - only convert strings with year, month, and date
 * @return {Array}
 */
function traverseArray(arr, strict) {
  arr.forEach(function(value, index) {
    arr[index] = traverse(value, strict);
  });
  return arr;
}