/**
 * Mongo Query:
 *  1.  {term1,term2..}  object keys, values => and
 *  2.  $and[term1,term2..]
 *  3.  $or[term1,term2..]
 *
 *  term:
 *      a.  field: "value"
 *      b.  field: {$elementMatch: <query>
 *      c.  field: {<oper>: value}
 *
 *  4.  $elemMatch
 *
   { "_id": 1, "results": [ { "product": "abc", "score": 10 },
                            { "product": "xyz", "score": 5 } ] },
   { "_id": 2, "results": [ { "product": "abc", "score": 8 },
                            { "product": "xyz", "score": 7 } ] },
   { "_id": 3, "results": [ { "product": "abc", "score": 7 },
                            { "product": "xyz", "score": 8 } ] },
   { "_id": 4, "results": [ { "product": "abc", "score": 7 },
                            { "product": "def", "score": 8 } ] },
   { "_id": 5, "results": { "product": "xyz", "score": 7 } }
] )

db.survey.find(
   { results: { $elemMatch: { product: "xyz", score: { $gte: 8 } } } }
)

*  5.  operators:  $gt,$gte,$lt,$lte
        field:{}
*/
interface MQuery {
    [key: string]: any;
}
interface MProjection {
    [key: string]: 0 | 1 | MProjection;
}
declare class MongoLikeQuery {
    static filterObjectsAndChildren(array: any[], query: MQuery, childName: string): any[];
    static filterObjects(array: any[], query: MQuery): any[];
    static projectObjects(array: any[], projection: MProjection): any[];
}
export { MongoLikeQuery };