energylink/public/app/core/utils/model_utils.ts

export function assignModelProperties(
  target,
  source,
  defaults,
  removeDefaults?
) {
  for (var key in defaults) {
    if (!defaults.hasOwnProperty(key)) {
      continue;
    }

    target[key] = source[key] === undefined ? defaults[key] : source[key];
  }
}