Grunt task for client-side EJS

grunt-ejsifier.js

// Concat EJS templates for use in client-side application
// Based on https://gist.github.com/cookrn/3001401
//
// Supports features found in `_.template()` -- EJS extras not included!
//
var path = require('path');

module.exports = function (grunt) {

  'use strict';

  var ejs = function ejs (files, options) {

    var content,
        namespace,
        templates = {};

    namespace = 'window.' + options.namespace;

    content = namespace + ' = _.extend({}, ' + namespace + ', ';
    files.forEach(function (filepath) {

      var key,
          obj = templates,
          template = grunt.file.read(filepath);


      filepath = filepath.replace(options.basePath, '').split(path.sep);
      if (filepath[0] == '') filepath = filepath.slice(1);

      key = path.basename(filepath.pop(), '.ejs');

      filepath.forEach(function (segment) {
        obj = obj[segment] = (obj[segment] || {});
      });
      
      obj[key] = template
        .replace(/(?:\\[ntr])+/g, ' ')
        .replace(/[\s\t]+/g, ' ');

    });

    content += JSON.stringify(templates);

    return content + ');';
  };

  grunt.registerMultiTask('ejs', 'Compile ejs templates to JST file', function () {

    var options = this.options({
          basePath: '',
          namespace: 'JST',
          requireJs: false
        });

    this.files.forEach(function (file) {

      // Create JST file.
      var content = ejs(file.src, options);

      if (options.requireJs) {
        content = 'define([], function () {\n' + content + '\n});';
      }

      grunt.file.write(file.dest, content);

      // Fail task if errors were logged.
      if (grunt.errors) return false;

      // Otherwise, print a success message.
      grunt.log.writeln( 'File "' + file.dest + '" created.' );
    });
  });
};