Delete local branches that have been deleted from the remote via git prune

rpod.js

// --Uses execSync to call a remote prune origin, and then deletes any local branches that were pruned from the remote

(function() {
  var exec = require('child_process').execSync;
  
	var remoteBranchesBeforePrune = GetRemoteBranches();
	exec('git remote prune origin');
	var remoteBranchesAfterPrune = GetRemoteBranches();

	var prunedBranches = [];
	remoteBranchesBeforePrune.forEach((branch) => {
		if (remoteBranchesAfterPrune.indexOf(branch) === -1)
			prunedBranches.push(branch);
	});

	var localBranches = GetBranches();

	var toDelete = [];
	localBranches.forEach((branch) => {
		if (prunedBranches.indexOf(branch) !== -1)
			toDelete.push(branch);
	});

	if (toDelete.length !== 0)
		toDelete.forEach((branch) => {
			exec('git branch -D ' + branch);
			console.log('Deleted local branch ' + branch);
		});
	else
		console.log('No local branches deleted.');

	function GetRemoteBranches() {
		var allBranchesArr = GetBranches('-a');

		return allBranchesArr.filter((el) => {
			return el.includes('remotes/origin/')
		}).map((el) => {
			return el.replace('remotes/origin/', '');
		});
	}

	function GetBranches(param) {
		if (!param)
			param = '';

		return exec('git branch ' + param).toString().trim().replace(/\*/, '').split('\n').map((el) => {
			return el.trim();
		}).filter((el) => {
			return !el.includes('HEAD')
		});
	}
})();