place `'use strict';` accodring to best practices — outside of module declaration
place `'use strict';` accodring to best practices — outside of module declaration

ArmorDarks/grunt-nunjucks-2-html,ArmorDarks/grunt-nunjucks-2-html,vitkarpov/grunt-nunjucks-2-html,vitkarpov/grunt-nunjucks-2-html