Use Grunt to compile pug files into html

Gruntfile.js

module.exports = function(grunt) {

  grunt.initConfig({
    pug: {
      compile: {
        options: {
          pretty: true,
          data: {
            debug: false
          }
        },
        files: [ {
          cwd: "templates",
          src: ['**/*.pug', '!includes/*', '!layout.pug'],
          dest: "public",
          expand: true,
          ext: ".html"
        } ]
      }
    },
    watch: {
      templates: {
        files: ['templates/**/*.pug'], // which files to watch
        tasks: ['pug'],
        options: {
          nospawn: true
        }
      }
    }
  });

  grunt.loadNpmTasks('grunt-contrib-pug');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.registerTask('default', ['watch']);

};