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83.41% Statements 3545/4250

72.63% Branches 3376/4648

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83.45% Lines 3535/4236

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engine.js	83.03%	3098/3731	72.83%	3029/4159	87.07%	128/147	83.08%	3089/3718
export-util.js	96.77%	30/31	90%	9/10	83.33%	5/6	96.77%	30/31
util.js	85.45%	417/488	70.56%	338/479	93.44%	57/61	85.42%	416/487