Automate updating deprecation-workflow.js

[elwayman02]

Is it possible to automate what this addon provides even further? For example, we could write test output to a log, run flushDeprecations() against that log, and then diff against the existing deprecation-workflow.js to add newly discovered deprecations.

This could be a huge improvement to utilize as part of an upgrade workflow. After running ember-cli-update, you just trigger a script in this addon that automatically updates its own config based on deprecations triggered by your project's tests.

[rwjblue]

Ya, we definitely can do something like this (would require a bit of work, but seems worth it).

[jelhan]

I also feel that manually maintaining config/deprecation-workflow.js makes it difficult to keep the file up-to-date. It would be great if we could replace all manual steps to upgrade it by a command. Something like ember deprecation-workflow update, which runs the tests, collects a list of triggered deprecation and writes it to config/deprecation-workflow.js. This would also allow us to add a ember deprecation-workflow check command, which verifies that all deprecation are listed in config/deprecation-workflow. This would be helpful to verify in CI that the file is up-to-date.