Method eq

packages/filter/src/query.ts:344–348

* Add an `=` condition * @param key - Property name * @param val - Property value

(key: K, val: MT[K])

   * @param val - Property value
   */
  eq<K extends KeyOf<MT>>(key: K, val: MT[K]): this {
    const w: Where<MT> = {};
    w[key] = val as ShortHandEqualType & MT[K];
    return this.add(w);
  }

  /**
   * Add a `!=` condition