PDF-to-svg error

gistfile1.txt

NORTHWEST-THIRTYFIVE-FIVE-NINETY-THREE:iesl-pdf-to-text eddie$ bin/run.js --svg -i test.pdf -o out.svg
Warning: Setting up fake worker.
# End of Document

/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:3276
  var canvas = document.createElement('canvas');
                        ^
TypeError: Object #<Object> has no method 'createElement'
    at createScratchCanvas (/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:3276:25)
    at img.onload (/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:2768:29)
    at Image.inspect [as src] (/Users/eddie/Documents/programming/iesl-pdf-to-text/node_modules/canvas/lib/image.js:27:17)
    at Object.<anonymous> (/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:2790:19)
    at Object.Promise (/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:1247:16)
    at /Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:2760:16
    at Object.Promise.resolve.then.then.comObj.postMessage.isReply [as onResolve] (/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:1520:28)
    at Object.runHandlers (/Users/eddie/Documents/programming/iesl-pdf-to-text/src/main/js/pdf.combined.js:1169:35)
    at Timer.listOnTimeout [as ontimeout] (timers.js:112:15)