Define IndexOptions in terms of mongodb.IndexOptions

[JaredReisinger]

Summary

The current IndexOptions definition is missing some mongo-allowed properties, like partialFilterExpression. Since mongoose simply passes the value along (after handling the added expires property), the type should be defined in the same way: as a simple extension to the mongo IndexOptions type.

Examples

This allows the following to work properly (in Typescript)

import mongoose from "mongoose";

export const schema = new mongoose.Schema({ whatever: String, useWhatever: Boolean });

schema.index({ whatever: 1 }, { partialFilterExpression: { useWhatever: true } });

[vkarpov15]

Great, thanks 👍