Mongoose_Pagination_Plugin.js

function paginate(query = {}, options = {}, callback) {
    const limit = options.limit || 10;
    let page = options.page || 1;

    const countQuery = this.find(query).count();
    return new Promise(resolve => {
        countQuery.exec().then(count => {

            const pages = Math.ceil(count / limit) || 1;

            if (page > pages) {
                page = pages;
            }

            const skip = (page - 1) * limit;

            let docsQuery = this.find(query)
                .sort(options.sort)
                .skip(skip)
                .limit(limit);
            docsQuery.exec().then(docs => {
                resolve({
                    count,
                    docs,
                    page,
                    limit,
                    pages,
                });
            });

        });
    });
}

export default function(schema) {
    schema.statics.paginate = paginate;
}