How can I compute the next release version from a PR branch

[surchs]

Hey,

If I decide to release off of a PR I want to be able to compute the version of this new release ahead of time, for example so that I can update the version of my tool in a package.json file before the release is made.

The problem is that the version computed by e.g. auto version only looks at the labels applied to the PR itself - not to any previously merged PRs. That is, if I'm releasing off a "patch" PR but have made a "breaking" change since the last release, the computed version will just be "patch".

It seems that we would need to use auto shipit --dry-run. However, auto does this thing called "context aware publishing" where it makes a canary release when run on a PR branch (as we are): https://intuit.github.io/auto/docs/generated/shipit

And when we run auto shipit --dry-run on the PR branch, we get a warning that:

warning   None of the plugins that you are using implement the `canary` command!

So we don't know how to proceed from here. Would really appreciate if someone has a tip or could share a similar setup for us to learn from. Many thanks!