Gruntfile.js

module.exports = function (grunt) {
  // Project configuration
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    copy: {
      dev: {
        src: 'index.html',
        dest: 'index-dev.html',
        options: {
          process: function (content /*, srcpath*/) {
            // do not register service worker
            return content.replace(
              /<script type="text\/javascript" src="src\/register-sw\.js"><\/script>/g,
              '<!-- <script type="text/javascript" src="src/register-sw.js"> \
              </script> -->'
            );
          }
        }
      }
    },
    connect: {
      prod: {
        options: {
          port: 8080,
          hostname: 'localhost',
          livereload: true
        }
      },
      dev: {
        options: {
          port: 8080,
          hostname: 'localhost',
          livereload: true,
          base: {
            path: './',
            options: {
              index: 'index-dev.html'
            }
          }
        }
      }
    },
    watch: {
      scripts: {
        files: [
          '**/*.js',
          '!**/node_modules/**',
          '**/node_modules/dwv/**',
          '*.html'
        ],
        options: {
          spawn: false,
          livereload: true
        }
      }
    }
  });

  grunt.loadNpmTasks('grunt-contrib-copy');
  grunt.loadNpmTasks('grunt-contrib-connect');
  grunt.loadNpmTasks('grunt-contrib-watch');

  // Task to run tests
  grunt.registerTask('start', ['connect:prod', 'watch']);
  grunt.registerTask('dev', ['copy:dev', 'connect:dev', 'watch']);
};