ArraySubdocument
ArraySubdocument.prototype.$parent()
Returns this sub-documents parent document.
ArraySubdocument.prototype.parentArray()
Returns this subdocument's parent array.
Example:
const Test = mongoose.model('Test', new Schema({
docArr: [{ name: String }]
}));
const doc = new Test({ docArr: [{ name: 'test subdoc' }] });
doc.docArr[0].parentArray() === doc.docArr; // true
