Issue

According to the documentation:

https://pouchdb.com/api.html#plugins

Example Plugin: Intercept Updates
A useful feature of plugins is to intercept updates before they are stored in PouchDB. In this way, a plugin might validate that the data is correct for the application, or even alter documents before they are committed to the database.

The best way to intercept all updates to a PouchDB database is to override the bulkDocs() method. All changes to PouchDB documents ultimately pass through the bulkDocs() method. For example, a call to put() will become a bulkDocs() call with a “batch” of one document.

Because PouchDB guarantees to plugin authors that all data changes ultimately happen via bulkDocs(), it is the ideal place for an application or plugin to intercept updates.

// Keep a reference to the "upstream" function.
var pouchBulkDocs = PouchDB.prototype.bulkDocs;
PouchDB.plugin({bulkDocs: validBulkDocs});

function validBulkDocs(body, options, callback) {
  if (typeof options == 'function') {
    callback = options
    options = {}
  }

  if (Array.isArray(body)) {
    var docs = body;
  } else {
    var docs = body.docs;
  }

  // All documents must have a .name field.
  for (var i = 0; i < docs.length; i++) {
    if (!docs[i].name) {
      var id = doc._id || '(no _id given)';
      return callback(new Error('Document is missing .name field: ' + id));
    }
  }

  // All documents check out. Pass them to PouchDB.
  return pouchBulkDocs.call(this, docs, options, callback);
}

The problems are that now with version 8.0.0:

var pouchBulkDocs = PouchDB.prototype.bulkDocs is undefined.

and

PouchDB.plugin({bulkDocs: validBulkDocs});

it's not overriding the bulkDocs with validBulkDocs anymore (the original one will be called).

Info

• Environment: Browser
• Platform: Chrome
• Adapter: idb
• Server: CouchDB