feat(classes/generator.js): html-pdf installed as default

src/classes/generator.js

@@ -1,8 +1,8 @@
-
 import moment from 'moment';
 import pug from 'pug';
 import fs from 'fs';
 import path from 'path';
+import htmlPDF from 'html-pdf';
 import Common from './common';
 import Recipient from './recipient';
 import Emitter from './emitter';
@@ -462,8 +462,7 @@ export default class Generator extends Common {
    * @private
    */
   _toPDF(keys, params = []) {
-    const htmlToPdf = this._loadHtmlToPdf();
-    const pdf = htmlToPdf.create(this._toHTML(keys, params).html, {timeout: '90000'});
+    const pdf = htmlPDF.create(this._toHTML(keys, params).html, {timeout: '90000'});
     return {
       pdf,
       toFile: (filepath) => this._toFileFromPDF(pdf, (filepath) || `${keys.filename}.pdf`),
@@ -573,18 +572,4 @@ export default class Generator extends Common {
     this._availableLocale = (config && config.locales) ? config.locales : ['en', 'fr'];
     if (config) i18n.configure(config);
   }
-
-  /**
-   * @description Loads html-pdf module if available
-   * @returns {*}
-   * @private
-   */
-  _loadHtmlToPdf() {
-    try {
-      /* eslint import/no-unresolved: [2, { ignore: ['html-pdf'] }] */
-      return require('html-pdf'); // eslint-disable-line global-require
-    } catch (err) {
-      throw new Error('Cannot load html-pdf. Try installing it: npm i -S [email protected]');
-    }
-  }
 }