fs.js alters stack trace from v8 console methods

[parkerault]

fs.js seems to be wrapping the console methods info, warn, and error (maybe others). We use console methods extensively for logging, and it's a little off putting to see fs.js:3 everywhere instead of the line from our source maps. Example:

You can see in the screenshot that calls to console.debug are unaffected. The calling location does show up lower down the stack trace, but it's just one of those minor annoyances that adds up to a major irritation over time.