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import { Schema, model, Document, Expression, PipelineStage, Types } from 'mongoose';import { expectType } from 'tsd';
const schema: Schema = new Schema({ name: { type: 'String' } });
interface ITest extends Document {  name?: string;}
const Test = model<ITest>('Test', schema);
Test.aggregate([{ $match: { name: 'foo' } }]).exec().then((res: any) => console.log(res));
Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).exec().then((res: Array<ITest>) => console.log(res[0].name));
Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).then((res: Array<ITest>) => console.log(res[0].name));
run().catch((err: Error) => console.log(err.stack));
async function run() {  const res: Array<ITest> = await Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).exec();  console.log(res[0].name);
  const res2: Array<ITest> = await Test.aggregate<ITest>([{ $match: { name: 'foo' } }]);  console.log(res2[0].name);
  expectType<number | undefined>(Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).options.maxTimeMS);  expectType<boolean | undefined>(Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).options.allowDiskUse);  Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).option({ maxTimeMS: 222 });
  await Test.aggregate<ITest>([{ $match: { name: 'foo' } }]).cursor().eachAsync(async(res) => {    console.log(res);  });
  for await (const obj of Test.aggregate<ITest>()) {    obj.name;  }
  function eachAsync(): void {    Test.aggregate().cursor().eachAsync((doc) => {      expectType<any>(doc);    });    Test.aggregate().cursor().eachAsync((docs) => {      expectType<any[]>(docs);    }, { batchSize: 2 });    Test.aggregate().cursor<ITest>().eachAsync((doc) => {      expectType<ITest>(doc);    });    Test.aggregate().cursor<ITest>().eachAsync((docs) => {      expectType<ITest[]>(docs);    }, { batchSize: 2 });  }
  // Aggregate.prototype.sort()  expectType<ITest[]>(await Test.aggregate<ITest>().sort('-name'));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: 1 }));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: -1 }));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: 'asc' }));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: 'ascending' }));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: 'desc' }));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: 'descending' }));  expectType<ITest[]>(await Test.aggregate<ITest>().sort({ name: { $meta: 'textScore' } }));}
function gh12017_1() {  const a: Expression = { $subtract: [    { $dayOfWeek: new Date() } as Expression.DayOfWeek, // errors    2  ] };}
function gh12017_2() {  const a: Expression.Reduce = {    $reduce: {      input: '$values',      initialValue: { depth: -1 }, // errors      in: {        depth: '$$this.depth' // errors      }    }  };
  const b: Expression.Reduce = {    $reduce: {      input: '$values',      initialValue: 0,      in: { $add: ['$$value', '$$this'] }    }  };
  const c: PipelineStage.Set = {    $set: {      child: {        foo: 'bar' // errors      },      friend: new Types.ObjectId()    }  };
  const d: Expression.ToInt = { $toInt: 2.5 };}

function gh12311() {  const densifyWithDates: PipelineStage.Densify = {    $densify: {      field: 'timestamp',      range: {        step: 1,        unit: 'hour',        bounds: [new Date('2022-01-01'), new Date('2022-12-31')]      }    }  };  const densifyWithNumbers: PipelineStage.Densify = {    $densify: {      field: 'age',      range: {        step: 1,        bounds: [30, 90]      }    }  };  const densifyWithFullBounds: PipelineStage.Densify = {    $densify: {      field: 'age',      range: {        step: 1,        bounds: 'full'      }    }  };}