import { type mongoose } from "https://deno.land/x/mongoose@7.8.2/types/expressions.d.ts";
const { CustomAggregationExpressionOperator } = mongoose;
definition: Expression.Accumulator | Expression.Function
x/mongoose/types/expressions.d.ts>mongoose.CustomAggregationExpressionOperator
import { type mongoose } from "https://deno.land/x/mongoose@7.8.2/types/expressions.d.ts";
const { CustomAggregationExpressionOperator } = mongoose;