add support for --updateSnapshot

[tmquinn]

No description provided.

[rwjblue]

Say more? How would like to use it, what would that look like?

[tmquinn]

Similar to the jest --updateSnapshot. It would provide a way to update .output test fixtures with the currently rendering version of the .input.

jest provides a menu selection to choose which fixtures you would like to update, as described here: https://jestjs.io/docs/en/snapshot-testing#updating-snapshots

[dogoku]

That's something that jscodeshift needs to do first. See facebook/jscodeshift#135

Once they update their testUtils to generate tests using snapshots instead of their custom way, then it would be easy to simply pipe the argument to jest

[rwjblue]

I think we can do it actually. @Turbo87 did something similar over in ember-codemods/ember-angle-brackets-codemod#138.

[Hypnosphi]

PR fixing this: facebook/jscodeshift#297