Emulate devices?

[aslushnikov]

Thanks to the emulation domain, we can emulate mobile devices.

Is there a need for such an api in puppeteer? If yes, what's the scenario and what would api look like?

[aslushnikov]

@ebidel: do you think this might be needed?

[paulirish]

Certainly for testing with different UAs.

In LH we do a pretty heavy emulation:

• devicemetricsoverride w/ nexus 5 stats
• setvisiblesize with viewport size
• setuseragentoverride
• settouchemulationenabled (for feature detects, etc)
• the extra ontouch handlers enabled via a addScriptToEvaluateOnLoad

One approach here is to separate emulating screen, touch events, and network UA.
(as throttling and online/offline is already separate)

But yeah I think even casual users will need this. UA spoofing at a minimum, but then screenshots would also necessitate screen overrides.

[aslushnikov]

Sweet, there's already Page.setUserAgentOverride, and @pavelfeldman is addressing the rest in #37

[aslushnikov]

Device emulation has landed in #72.