How to use

addDoc

function

in

Index

folderToDocuments(linksPath)
 .each(result => {
  index.addDoc(result);
 })
 .done(() => {
  const indexJSON = index.toJSON();
  fs.writeFile(indexPath, JSON.stringify(indexJSON), () => {
   console.log('Successfully saved index!');
  });
 });

const run = async () => {
 await folderToDocuments(linksPath, {arrayMod})
  .each(result => index.addDoc(result))
  .toPromise(Promise);
 console.log('Successfully generated index!');