nl_tokens: Main exposed function . Here we check the options and callback then run the files through jsdom .
pl_tokens: function init ( files , options , callback ) { if ( _ . isFunction ( options ) ) { /* There were no options, this argument is actually the callback */ callback = options ; options = { } ; } else if ( ! _ . isFunction ( callback ) ) { throw <mask> TypeError ( 'UnCSS: expected a callback' ) ; } /* Try and read options from the specified uncssrc file */ if ( options . uncssrc ) { try { /* Manually-specified options take precedence over uncssrc options */ options = _ . merge ( utility . parseUncssrc ( options . uncssrc ) , options ) ; } catch ( err ) { if ( err instanceof SyntaxError ) { callback ( new SyntaxError ( 'UnCSS: uncssrc file is invalid JSON.' ) ) ; return ; } callback ( err ) ; return ; } } /* Assign default values to options, unless specified */ options = _ . defaults ( options , { csspath : '' , ignore : [ ] , media : [ ] , timeout : 0 , report : false , ignoreSheets : [ ] , html : files , banner : true , // gulp-uncss parameters: raw : null , userAgent : 'uncss' , inject : null } ) ; process ( options ) . then ( ( [ css , report ] ) => callback ( null , css , report ) , callback ) ; }