Document.prototype.$op

Type:

• «property»

A string containing the current operation that Mongoose is executing on this document. May be null, 'save', 'validate', or 'remove'.

Example:

const doc = new Model({ name: 'test' });
doc.$op; // null
const promise = doc.save();
doc.$op; // 'save'
await promise;
doc.$op; // null