compare-geojson/comparators/added_place.js

Compare a features new and old versions in GeoJSON

'use strict';

module.exports = addedPlace;

function addedPlace(newVersion, oldVersion, callback) {
  if (!newVersion) {
    return callback(null, {});
  }
  if (oldVersion) {
    if ('place' in newVersion.properties && !('place' in oldVersion.properties)) {
      if (newVersion.properties['place'] === 'city' ||
            newVersion.properties['place'] === 'town' ||
            newVersion.properties['place'] === 'country') {
        return callback(null, {'result:addedPlace': true});
      }
    }
  } else if ('place' in newVersion.properties &&
        (newVersion.properties['place'] === 'city' ||
         newVersion.properties['place'] === 'town' ||
         newVersion.properties['place'] === 'country')) {
    return callback(null, {'result:addedPlace': true});
  }
  return callback(null, {});
}