Dates not parsed in filter query parameter

[vickyRathee]

When I pass the dates in JSON filter, it's not parsed and resulted in string

Parser

_parser = new MongooseQueryParser({
    blacklist: ['apiKey', 'apikey'],
    sortKey: 'sort',
    limitKey: 'limit',
    skipKey: 'offset',
    dateFormat: 'yyyy-MM-dd',
  });

Front end

this.paged = {
      ...this.paged,
      offset: 0,
      filter: {
        created_at: {
          $gte: startDate.toDate(),
          $lte: endDate.format('YYYY-MM-DD'),
        },
      },
    };

Back end

const query = `filter=${paged.filter}`;
const parsed = this._parser.parse(query);
console.log('filter', parsed)