inline the embedFiles function

lib/index.js

@@ -362,19 +362,6 @@ export class Baker extends EventEmitter {
     }, preppedData);
   }
 
-  embedFiles(path) {
-    return new Promise((resolve, reject) => {
-      readdir(path, (err, files) => {
-        //handling error
-        if (err) {
-          reject('Unable to scan directory: ' + err);
-        }
-
-        resolve(files);
-      });
-    });
-  }
-
   /**
    * Generates fallback images for web-component embeds.
    * @param {string} baseUrl The local server's base URL
@@ -384,11 +371,21 @@ export class Baker extends EventEmitter {
   async buildEmbedFallbacks(baseUrl) {
     const distDir = this.output.split('/').slice(0, -1).join('/');
     const embedFilePattern = path.join(distDir, '_dist', 'embeds');
+
     /**
      * An array of file paths representing embed files.
      * @type {string[]}
      */
-    const embedFiles = await this.embedFiles(embedFilePattern);
+    const embedFiles = await (new Promise((resolve, reject) => {
+      readdir(embedFilePattern, (err, files) => {
+        //handling error
+        if (err) {
+          reject('Unable to scan directory: ' + err);
+        }
+
+        resolve(files);
+      });
+    }));
 
     if (!embedFiles.length) return;