fix: Update handlebars to 4.7

package.json

@@ -32,7 +32,7 @@
   "dependencies": {
     "@types/minimatch": "3.0.3",
     "fs-extra": "^8.1.0",
-    "handlebars": "~4.5.3",
+    "handlebars": "^4.7.0",
     "highlight.js": "^9.17.1",
     "lodash": "^4.17.15",
     "marked": "^0.8.0",

src/lib/output/plugins/MarkedPlugin.ts

@@ -139,7 +139,7 @@ export class MarkedPlugin extends ContextAwareRendererComponent {
                     const contents = FS.readFileSync(path, 'utf-8');
                     if (path.substr(-4).toLocaleLowerCase() === '.hbs') {
                         const template = Handlebars.compile(contents);
-                        return template(context);
+                        return template(context, { allowProtoMethodsByDefault: true, allowProtoPropertiesByDefault: true });
                     } else {
                         return contents;
                     }

src/lib/output/renderer.ts

@@ -163,7 +163,7 @@ export class Renderer extends ChildableComponent<Application, RendererComponent>
 
         // Theme must be set as this is only called in render, and render ensures theme is set.
         page.template = page.template || this.theme!.resources.templates.getResource(page.templateName)!.getTemplate();
-        page.contents = page.template(page);
+        page.contents = page.template(page, { allowProtoMethodsByDefault: true, allowProtoPropertiesByDefault: true });
 
         this.trigger(PageEvent.END, page);
         if (page.isDefaultPrevented) {

src/lib/output/utils/resources/templates.ts

@@ -17,9 +17,9 @@ export class Template<T = any> extends Resource {
         return this.template;
     }
 
-    render(context: any, options?: any): string {
+    render(context: any, options?: Handlebars.RuntimeOptions): string {
         const template = this.getTemplate();
-        return template(context, options);
+        return template(context, { ...options, allowProtoMethodsByDefault: true, allowProtoPropertiesByDefault: true });
     }
 }