Stl to png not working on ubuntu 16.04

[knuks]

I tried Converting STL to PNG
stljs = require('stljs')
stljs.imageify('teapot.stl', { width: 200, height: 100, dst: 'teapot.png' }
, (err, povOutput, name) ->
# done with converting the image
, (err, povPolygon, name) ->
# called on each polygon is processed
)
gives error
/var/www/html/stltopng/index.js:4
, (err, povOutput, name) ->
^

SyntaxError: Unexpected token >
at createScript (vm.js:56:10)
at Object.runInThisContext (vm.js:97:10)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:383:7)
at startup (bootstrap_node.js:149:9)
please resolve i need conversion