Service worker debug logging is suppressed even during local development

[robbytx]

Problem

During local development (using ember serve or ember build without --environment production), the Workbox service worker output is built without logging enabled. This appears to be due to the fact that the Workbox mode option defaults to production (reference), and this plugin does not set the mode option.

Desired Behavior

IMHO this plugin should pass the current Ember environment as the value for the mode option by default here.

The only hesitation I see to doing this is if the Workbox debug logging is too verbose, in which case one can set disableDevLogs: true. If others prefer not to enable this, then I propose that the mode option should at least be documented in this project's README.

Workarounds

Run NODE_ENV=development ember serve (or build), or pass the option explicitly in ember-cli-build.js:

let app = new EmberApp(defaults, {
  workbox: {
    mode: EmberApp.env()
  }
  ...