Switch to a recently modified branch through a selection menu

select-recent-git-branch.js

#!/usr/bin/env node

String.prototype.format = function() {
    var formatted = this;
    for (var i = 0; i < arguments.length; i++) {
        var regexp = new RegExp('\\{'+i+'\\}', 'gi');
        formatted = formatted.replace(regexp, arguments[i]);
    }
    return formatted;
};

var options = [];

var cmd = "git for-each-ref --count=12 --sort=-committerdate --format='%(refname:short)' refs/heads/";
var process =  require('child_process');
process.exec(cmd, function (err, stdout, stderr) {
        if (err) {
                console.error(err);
                return;
        }

        var inquirer = require("inquirer");

        options = stdout.trim().split("\n");
        options.push(new inquirer.Separator());

        inquirer.prompt([{
                type: "list",
                name: "select",
                message: "Choose a branch:",
                choices: options
        }], function(answer) {
                process.exec("git checkout {0}".format(answer.select), function(err, stdout, stderr) {
                        if (err) {
                                console.error(err);
                        }
                });
        });
});