shakacode / react_on_rails / 2689

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travis-ci

Don't assume ActionMailer is available (#608)

If the Rails app that uses this gem doesn't include the
ActionMailer railtie, the gem raises this error:

`uninitialized constant ReactOnRailsHelper::ActionMailer`

This change introduces a check that the ActionMailer
constant is defined before setting the 'inMailer' option.

I'm not quite sure how to test this, so if anyone has
ideas, that would be helpful.

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