Apologies if this is already well known, but after upgrading to 3.0 I saw the following message in the log.
I was going to raise an issue in Github, but there was a message there encouraging problems to be raised here.
(node:15668) [DEP0111] DeprecationWarning: Access to process.binding('http_parser') is deprecated. (Use `node --trace-deprecation ...` to show where the warning was created) (node:15668) [DEP0128] DeprecationWarning: Invalid 'main' field in 'C:\Users\williams_b\.node-red\node_modules\node-red-dashboard\package.json' of 'none'. Please either fix that or report it to the module author