nl_tokens: Special case for binding same node as parent .
pl_tokens: function parentSetter ( x ) { var previousValue = memoizedObject [ <mask> ] var returnValue // Optimistically set the memoized value, so it persists even if an error // occurs after this point. memoizedObject [ key ] = x // Check for no-op. if ( x === previousValue ) return x // Need to qualify this check for non-empty value. if ( definition && x !== null && x !== void 0 ) bindKeys ( scope , x , definition , parentNode , keyPath ) else if ( change ) { returnValue = change ( parentNode , x , previousValue === void 0 ? null : previousValue , keyPath ) if ( returnValue !== void 0 ) changeValue ( parentNode , returnValue , branch [ replaceAttributeKey ] ) } return x }