Don't check swSrc for hardcoded injection point in wizard flow

[jeffposnick]

R: @philipwalton

Fixes #2447

Using the wizard mode in the workbox-cli, there was previously a validation step that would check to see if your swSrc file contained the manifest injection point. This check wasn't updated for Workbox v5, so it was still looking for precacheAndRoute([]).

There's already runtime validation that will check for the proper injection point when you run workbox injectManifest after you complete the wizard step. That runtime validation will work properly if you happen to override the injectionPoint configuration option, which this previous hardcode assertion didn't support.

So I'm just dropping the assertion from the wizard flow entirely.

[linonetwo]

so we can not use the workbox now...Please release a version!

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Seems I can comment code in node_modules...haha

Thanks for your great work!

[jeffposnick]

In the meantime, you can also work around this issue by just adding in

// precacheAndRoute([])

commented out in your swSrc file.