(function (Prism) {
  Prism.languages.ejs = {
    delimiter: {
      pattern: /^<%[-_=]?|[-_]?%>$/,
      alias: 'punctuation',
    },
    comment: /^#[\s\S]*/,
    'language-javascript': {
      pattern: /[\s\S]+/,
      inside: Prism.languages.javascript,
    },
  };

  Prism.hooks.add('before-tokenize', function (env) {
    var ejsPattern = /<%(?!%)[\s\S]+?%>/g;
    Prism.languages['markup-templating'].buildPlaceholders(
      env,
      'ejs',
      ejsPattern
    );
  });

  Prism.hooks.add('after-tokenize', function (env) {
    Prism.languages['markup-templating'].tokenizePlaceholders(env, 'ejs');
  });

  Prism.languages.eta = Prism.languages.ejs;
})(Prism);