Exception in delivering result of invoking method in FF only

Exception in delivering result of invoking 'module.methodName': isArguments@http://localhost:3000/packages/es5-shim.js?hash=adc3c6270d5697523fe2a72e73428390b7eba83a:1176:16
keys@http://localhost:3000/packages/es5-shim.js?hash=adc3c6270d5697523fe2a72e73428390b7eba83a:1239:17
prefix@http://localhost:3500/assets/web.js line 6642 > eval:151:7
prefix/<@http://localhost:3500/assets/web.js line 6642 > eval:155:30
prefix@http://localhost:3500/assets/web.js line 6642 > eval:151:7

after that have a lot of repeating last two lines.
Have it only in FF, in Chrome everything is ok. The method itself runs flawlessly, calls callback without exceptions as well. App breaks on rendering a react component.

Any suggestions? Has somebody experienced smth like that?