Method and

packages/filter/src/query.ts:319–325

* Add an `and` clause. * @param w - One or more where objects

(...w: (Where<MT> | Where<MT>[])[])

   * @param w - One or more where objects
   */
  and(...w: (Where<MT> | Where<MT>[])[]): this {
    let clauses: Where<MT>[] = [];
    w.forEach(where => {
      clauses = clauses.concat(Array.isArray(where) ? where : [where]);
    });
    return this.add({and: clauses});
  }

  /**
   * Add an `or` clause.