Excessive memory usage?

[Dave Workman]

We've recently began to shard out our text extraction processes and I noticed a significant spike in memory usage. Looks like it's coming from this module. Running the following:

var textract = require('textract');
setInterval(function () {
  console.error(process.memoryUsage());
}, 1000);

Results in around 135 MB of memory being used. Comment out the first line and that shoots down to around 10 MB.

Any ideas what's causing this?

[Dave Workman]

I've found the culprit... J (xls.js) module jumps memory usage from 14 MB to 129 MB.