A webpack loader for "JavaScript Templates" by blueimp that compiles templates to js

tmpl-loader.js

/*
    tmpl-loader.js
    A webpack loader for "JavaScript Templates" by blueimp that compiles templates to js
    https://github.com/blueimp/JavaScript-Templates#compiled-templates
    This code is based on compile.js

    Usage (webpack.config.js):
        module.exports = {
          module: {
              loaders: [
                  {
                      test: /templates\.html$/,
                      loader: __dirname + '/tmpl-loader.js'
                  }
              ]
          }
        };
        
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author: Alf Marius Foss Olsen <alfm@rius.in>
*/
  
"use strict";
var fs = require('fs')
var tmpl = require('blueimp-tmpl');

tmpl.print = function (str) {
    // Only add helper functions if they are used inside of the template:
    var helper = helperRegexp.test(str) ? tmpl.helper : ''
    var body = str.replace(tmpl.regexp, tmpl.func)
    if (helper || (/_e\s*\(/.test(body))) {
        helper = '_e=tmpl.encode' + helper + ','
    }
    return 'function(' + tmpl.arg + ',tmpl){' +
    ('var ' + helper + "_s='" + body + "';return _s;")
    .split("_s+='';").join('') + '}'
}

// Retrieve the content of the minimal runtime:
var runtime = fs.readFileSync(__dirname + '/node_modules/blueimp-tmpl/js/runtime.js', 'utf8'); // EDIT!

// A regular expression to parse templates from script tags in a HTML page:
var regexp = /<script( id="([\w\-]+)")? type="text\/x-tmpl"( id="([\w\-]+)")?>([\s\S]+?)<\/script>/gi

// A regular expression to match the helper function names:
var helperRegexp = new RegExp(
    tmpl.helper.match(/\w+(?=\s*=\s*function\s*\()/g).join('\\s*\\(|') + '\\s*\\('
)

module.exports = function(source) {
    this.cacheable && this.cacheable();
    
    let match, id, list = [];
    while ((match = regexp.exec(source)) !== null) {
        id = match[2] || match[4]
        list.push("'" + id + "':" + tmpl.print(match[5]))
    }
    return runtime.replace('{}', '{' + list.join(',') + '}')
}