Cannot add contributors when commitConvention is set to gitmoji,

[iqfareez]

Describe the bug
Adding contributors failed when using gitmoji in the commitConvention

To Reproduce
Steps to reproduce the behavior:

1. Install all-contributors bot
2. Create new repo (or can use existing)
3. Add first contributors. Eg @all-contributors please add @fareez2 for code & test
4. Merge the first PR created by the bot (including README and .all-contributorsrc files)
5. In .all-contributorsrc, change commitConvention to gitmoji. Commit the changes
6. Add another contributor. Eg: @all-contributors please add @iqfareez for docs & test

Expected behavior
A new PR should be created with contributor iqfareez.

Actual behavior

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Additional context

Changed back to other entries other than gitmoji fixes the issue.

[jlandure]

FYI, I got the same issue if you need more details. 😊

[unode]

#476 could be related as we are also using gitmoji there.

[jerboa88]

Gitmoji works using the CLI app, but not with the bot, so it seems like this issue is related to generation of the commit message itself.

This project relies on commit-conv 1.0.3 to generate PR titles using the commitConvention setting in lib/add-contributor.js, but commit-conv 1.0.3 doesn't support gitmoji as an argument. Passing gitmoji anyway causes the library to throw an error. It doesn't seem like the PR to add gitmoji support to the CLI was tested with the bot before merge.

The author of that library has since added support for gitmoji in Berkmann18/commit-conv@f0289ab, but has not published a new package on npm or GitHub releases. I created an issue there for publishing a new release, but one should be able to fix this temporarily though by installing commit-conv straight from the master branch.