nl_tokens: Used internally to get value either raw or wrapped as specified by the wrapItems flag .
pl_tokens: function ( key , value , priority ) { var normalizedPriority = this . normalizePriority ( priority ) , serial = this . _internalSerialNumbers ++ ; if ( this . wrapItems ) { return new ( this . itemWrapperConstructor ) ( key , value , normalizedPriority , serial ) ; } try { <mask> . key = key ; value . priority = priority ; value . serial = serial ; } catch ( e ) { throw new TypeError ( 'PriorityList can only work in "unwrapped" mode with values/objects' + ' that can have properties created/set on them.  Type encountered: `' + sjl . classOf ( value ) + '`;' + '  Original error: ' + e . message ) ; } return value ; }