Catch unexpected errors during patch

[eagleeye]

When something is going wrong during patch, and error is not returned by callback, than i can't see before and after documents in error message, or at least before document. I think there should be try catch inside patch with fallback to general callback(catchedErr)

Just real example: One patched failed on 46% of progress, and it looks like document-specific problem, but i can't see that problematic document

ubuntu@ip-10-73-144-232 production-deployment ~ $ mongopatch debitoor-patch/patches/14w13/SB-7884-set-unpaidAmountCents-for-expenses --db "$MONGOPATCH_STAGING2_DB" --log-db "$MONGOPATCH_LOG" --dry-run --parallel 25 Progress: [=======================> ] 40938/87229 46.9% Patch: patch_20140319.091131.858_economic-staging-eu-2.expenses

Summary: Time 00h 07m 45s ETA 00h 09m 01s (speed 87) Modified 40938 (rest 0) Skipped 0 Diff: added updated removed unpaidAmountCents +40937 1 0 unpaidAmount 0 0 -1876 Cannot call method 'minus' of undefined TypeError: Cannot call method 'minus' of undefined at substractAmount (/home/ubuntu/debitoor-patch/patches/14w13/SB-7884-set-unpaidAmountCents-for-expenses/index.js:87:25) at getUnpaidAmount (/home/ubuntu/debitoor-patch/patches/14w13/SB-7884-set-unpaidAmountCents-for-expenses/index.js:56:9) at /home/ubuntu/debitoor-patch/patches/14w13/SB-7884-set-unpaidAmountCents-for-expenses/index.js:16:48 at null._ontransform (/usr/local/lib/node_modules/mongopatch/source/streams.js:222:3) at ParallelTransform._transform (/usr/local/lib/node_modules/mongopatch/node_modules/parallel-transform/index.js:46:7) at Transform._read (_stream_transform.js:179:10) at Readable.read (_stream_readable.js:320:10) at flow (_stream_readable.js:589:52) at null. (_stream_readable.js:573:7) at EventEmitter.emit (events.js:92:17)