var getRefs = function()

in make-util.js [848:910]
47 lines of code
7 McCabe index (conditional complexity)

var getRefs = function () {
    console.log();
    console.log('> Getting branch/commit info')
    var info = { };
    var branch;
    if (process.env.TF_BUILD) {
        // during CI agent checks out a commit, not a branch.
        // $(build.sourceBranch) indicates the branch name, e.g. refs/heads/releases/m108
        branch = process.env.BUILD_SOURCEBRANCH;
    }
    else {
        // assumes user has checked out a branch. this is a fairly safe assumption.
        // this code only runs during "package" and "publish" build targets, which
        // is not typically run locally.
        branch = run('git symbolic-ref HEAD', /*inheritStreams*/false, /*noHeader*/true);
    }

    assert(branch, 'branch');
    var commit = run('git rev-parse --short=8 HEAD', /*inheritStreams*/false, /*noHeader*/true);
    var release;
    if (branch.match(/^refs\/heads\/releases\/m[0-9]+$/)) {
        release = parseInt(branch.split('/').pop().substr(1));
    }

    // get the ref info for HEAD
    var info ={
        head: {
            branch: branch,
            commit: commit,
            release: release
        },
        releases: { }
    };

    // get the ref info for each release branch within range
    run('git branch --list --remotes "origin/releases/m*"', /*inheritStreams*/false, /*noHeader*/true)
        .split('\n')
        .forEach(function (branch) {
            branch = branch.trim();
            if (!branch.match(/^origin\/releases\/m[0-9]+$/)) {
                return;
            }

            var release = parseInt(branch.split('/').pop().substr(1));

            // filter out releases less than 108 and greater than HEAD
            if (release < 108 ||
                release > (info.head.release || 999)) {

                return;
            }

            branch = 'refs/remotes/' + branch;
            var commit = run(`git rev-parse --short=8 "${branch}"`, /*inheritStreams*/false, /*noHeader*/true);
            info.releases[release] = {
                branch: branch,
                commit: commit,
                release: release
            };
        });

    return info;
}