npm install --save angular-equal-directive
angular.module('app', ['angular-equal-directive'])
and in your views you can use it like this:
input(type="password", ng-model="vm.password", name="password", ng-minlength="vm.passwordMinlength", required)
input(type="password", ng-model="vm.confirmPassword", name="confirmPassword", equal="vm.password", required)
This is an UMD package.
Do whatever you please with this.