import sheetify = require('sheetify'); function done1(err: Error, css: string, prefix: string) {} function done2(err: Error, css: string) {} function done3(err: Error) {} const test1 = sheetify('foobar'); const test2 = sheetify('foobar', {global: true}); const test3 = sheetify('foobar', 'beep.css', {global: true}); const test4 = sheetify('foobar', 'beep.css'); const test5 = sheetify('foobar', 'beep.css', {global: true}, done1); const test6 = sheetify('foobar', 'beep.css', {global: true}, done2); const test7 = sheetify('foobar', 'beep.css', {global: true}, done3); const test8 = sheetify` .test { border: 1px soild black; } `; const prefix = sheetify.getPrefix('boop');