Feature request: console level

[furstenheim]

Page offers a console event but it is not possible to know the level of the message (log, error...).

page.on('console', function (...args) {
    // No way to know if this is an error
})

Would it be possible to implement a way to know the level? I don't know what would be the cleanest way, either one more event per level:

page.on('consoleError', ...)

or a new type of event:

page.on('consoleWithType', function ({type, args}) ...

Basically here: https://github.com/GoogleChrome/puppeteer/blob/master/lib/Page.js#L308 the event type is totally ignored

[michaelfward]

@ebidel - I didn't know if creating a Console object with its own Events class property would be preferable; I couldn't find anywhere else in the project that didn't explicitly declare it's events, or emit more than one at a time.

Let me know what you recommend and I'll submit a PR!

[aslushnikov]

@michaelfward I like page.console namespace that will deliver specific events; go for it!

page.console.on('log', console.log);
page.console.on('warn', console.warn);
page.console.on('debug', console.debug);
page.console.on('pageerror', console.error);