Help fixing "inconsistent return type" warning

[Ben McCann]

I'm getting a warning trying to compile some JS:

angular.js:366: WARNING - inconsistent return type

found : *

required: boolean

return obj && obj.document && obj.location && obj.alert && obj.setInterval;

I'm surprised this is causing a warning. What's the preferred way to do this with Closure Compiler?

Thanks,

Ben

[Ilia Mirkin]

This will actually return false or obj.setInterval (which is not a
boolean), hence the confusion. You can do

return Boolean(obj && ...);

Which should coerce it to a boolean.

[Ben McCann]

Ah, true. Thanks

--
about.me/benmccann

[John Lenz]

I usually use "!!"