nl_tokens: Generate a complete set of responsive spacing helpers
pl_tokens: function ( breakpoints , spacingScale ) { return _ . <mask> ( breakpoints , function ( breakpointValue , breakpointKey ) { let mediaQuery = postcss . atRule ( { name : 'media' , params : breakpointValue , } ) let rules = _ . flatMap ( spacingScale , function ( scaleValue , scaleKey ) { return _ . map ( helpers , function ( helperValues , helperKey ) { return makeFunctionalRule ( ` ${ breakpointKey } ${ helperKey } ${ scaleKey } ` , helperValues , scaleValue ) } ) } ) return mediaQuery . append ( rules ) } ) }