Babel source map required option

[fermads]

For Babel (6to5) to work with this branch the sourceFileName Babel option (http://babeljs.io/docs/usage/options/) must be set manually. Currently the error thrown is a bit mysterious and hard for the user to track what is wrong. I just treated the error with a friendlier message on 2 files.

source-maps.js: entry point of the problem, added a message showing that "sources" property is missing fslookup.js: end point of the problem. Generically try/catching file not found error

[sbdev]

Please consider merging this, folks (me included) have been using this branch and successfully verified it fixes the source-map issue. No regressions noted. Thanks!

[0xaguspunk]

Which version includes this feature?

[mgamsjager]

Any plans on merging this ?

[aerze]

Status? How can we help?

[darkowic]

Any further plans with this mr?

[sullof]

Hi guys, is there a reason why this is still unmerged? This would be very helpful.