Template Builder

template_builder.js

/**
 * @desc Returns a template function builder.
 * @param template - template string.
 * @param params - Substitution params.
 * @return {function} - Template function.
 *
 * @example
 * var template = buildTemplate("Hello, my name is ${params}");
 * template('David'); // Hello, my name is David
 *
 * var template = buildTemplate('Greetings from ${params[0]}, ${params[1]}, ${params[2]} and ${params[3]}');
 * template('Kike', 'Pol', 'Jorge', 'Victor'); // Greetings from Kike, Pol, Jorge, Victor
 */
export default function (template) {
  return new Function(
    'var str = "' + template.replace(/(?:\r\n|\r|\n)/g, '<br />') + '";' +
    'for(var i = 0; i < arguments.length; i++)  {' +
      'str = str.replace(RegExp("\\\\${params\\\\}|\\\\${params\\\\[" + i + "\\\\]\\\\}", "gi"), arguments[i]);' +
    '}' +
    'return str;'
  );
}