nl_tokens: Write as many elements out in a row as possible and then flush output . We render elements as their data becomes available so they might fill in out - of - order .
pl_tokens: function writeElements ( res , elements ) { // Pick up where we left off. var start = RLS ( ) . nextElement || ( RLS ( ) . nextElement = 0 ) ; for ( var i = start ; i < elements . <mask> ; RLS ( ) . nextElement = ++ i ) { // If we haven't rendered the next element yet, we're done. if ( elements [ i ] === ELEMENT_PENDING ) break ; // Got one! writeElement ( res , elements [ i ] , i ) ; // Free for GC. elements [ i ] = ELEMENT_ALREADY_WRITTEN ; if ( PageUtil . PageConfig . get ( 'isFragment' ) ) continue ; if ( RLS ( ) . haveBootstrapped ) { // We've already bootstrapped, so we can immediately tell the // client controller to wake the new element we just sent. wakeElementRange ( res , i , i ) ; } else if ( i === elements . length - 1 ) { // Page didn't emit `<TheFold/>`.  Now we're done. // This wakes everything up through `i`. bootstrapClient ( res , i ) ; } } // It may be a while before we render the next element, so if we just // wrote anything let's send it down right away. if ( i !== start ) flushRes ( res ) ; }