addon/helpers/storage.js
function _buildKey(context, key) {
  let appConfig = getOwner(context).resolveRegistration('config:environment');
  let addonConfig = appConfig && appConfig['ember-local-storage'] || {};
  let namespace = _getNamespace(appConfig, addonConfig);
  let delimiter = addonConfig.keyDelimiter || ':';

  return namespace ? `${namespace}${delimiter}${key}` : key;
}
function _buildKey(context, key) {
  let appConfig = getOwner(context).resolveRegistration('config:environment');
  let addonConfig = appConfig && appConfig['ember-local-storage'] || {};
  let namespace = _getNamespace(appConfig, addonConfig);
  let delimiter = addonConfig.keyDelimiter || ':';

  return namespace ? `${namespace}${delimiter}${key}` : key;
}
function _buildKey ( context , key ) { let appConfig = getOwner ( context ) . resolveRegistration ( 'config:environment' ) ; let addonConfig = appConfig && appConfig [ 'ember-local-storage' ] || { } ; let namespace = _getNamespace ( appConfig , addonConfig ) ; let delimiter = addonConfig . keyDelimiter || ':' ; return namespace ? ` ${ namespace } ${ delimiter } ${ key } ` : key ; }
TODO: Add migration helper
TODO : Add migration helper