@teppeis/git-delete-squashed (forked)

This is a tool that deletes all of your git branches that have been "squash-merged" into default branch (master or main).

This is useful if you work on a project that squashes branches into default branch. After your branch is squashed and merged, you can use this tool to clean up the local branch.

Guessing default branch (difference from original)

1. If env DEFAULT_BRANCH is set, use it.
2. If the repo has local branch master, use it.
3. If the repo has local branch main, use it.
4. Throws an error.

Usage

sh

To run as a shellscript, simply copy the following command (setting up an alias is recommended). There's no need to clone the repo. (If the default branch is main)

git checkout -q main && git for-each-ref refs/heads/ "--format=%(refname:short)" | while read branch; do mergeBase=$(git merge-base main $branch) && [[ $(git cherry main $(git commit-tree $(git rev-parse $branch\^{tree}) -p $mergeBase -m _)) == "-"* ]] && git branch -D $branch; done

Node.js

You can also install the tool as a Node.js package from NPM. (The package code is in this repo.)

$ npx @teppeis/git-delete-squashed

Details

To determine if a branch is squash-merged, git-delete-squashed creates a temporary dangling squashed commit with git commit-tree. Then it uses git cherry to check if the squashed commit has already been applied to main. If so, it deletes the branch.