compare-geojson/oldComparators/highway_deleted.js

Compare a features new and old versions in GeoJSON

'use strict';
// To flag deleted highway's.


/**
* Identify deletion of a highway.
* @param {object} newVersion Features new version in GeoJSON.
* @param {object} oldVersion Features old version in GeoJSON.
* @param {Function} callback called with (error, result).
* @returns {undefined} calls callback.
*/
function highway_deleted(newVersion, oldVersion, callback) {

  if (!newVersion || !oldVersion) {
    return callback(null, {});
  }

  var highwayTypesToFlag = ['motorway', 'trunk', 'primary', 'secondary', 'tertiary'];
  if (newVersion && oldVersion && newVersion.deleted && oldVersion.properties && oldVersion.properties.highway && highwayTypesToFlag.indexOf(oldVersion.properties.highway) !== -1) {
    callback(null, {
      'result:highway_deleted': true
    });
  } else {
    callback(null, {});
  }
}
module.exports = highway_deleted;