axe-core/lib/core/utils/extend-meta-data.js

Accessibility engine for automated Web UI testing

/**
 * Extends metadata onto result object and executes any functions
 * @param  {Object} to   The target of the extend
 * @param  {Object} from Metadata to extend
 */
function extendMetaData(to, from) {
  Object.assign(to, from);
  Object.keys(from)
    .filter(prop => typeof from[prop] === 'function')
    .forEach(prop => {
      to[prop] = null;
      try {
        to[prop] = from[prop](to);
      } catch (e) {
        // Ignore
      }
    });
}

export default extendMetaData;