Closed
Description
openedon Jun 21, 2024
Prerequisites
- I have written a descriptive issue title
- I have searched existing issues to ensure the bug has not already been reported
Mongoose version
8.4.3
Node.js version
20.14.0
MongoDB server version
4.4.13
Typescript version (if applicable)
No response
Description
After upgrading mongoose 7.3.4 -> 7.6.13, we started to experience some TypeErrors with one of our bulkWrite operations. We also tried upgrading to 8.4.3, but we still have been facing the same issues.
Error stack:
TypeError: Cannot read properties of undefined (reading 'schema')
at SchemaArray.cast$elemMatch (PATH\node_modules\mongoose\lib\schema\array.js:626:59)
at SchemaArray.castForQuery (PATH\node_modules\mongoose\lib\schema\array.js:572:20)
at cast (PATH\node_modules\mongoose\lib\cast.js:324:43)
at PATH\node_modules\mongoose\lib\helpers\model\castBulkWrite.js:100:37
at PATH\node_modules\mongoose\lib\model.js:3584:37
at each (PATH\node_modules\mongoose\lib\helpers\each.js:11:5)
at PATH\node_modules\mongoose\lib\model.js:3584:7
at new Promise (<anonymous>)
at Function.bulkWrite (PATH\node_modules\mongoose\lib\model.js:3583:11)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
Steps to Reproduce
Here is a simple script that replicates the error-producing behavior on our backend
const mongoose = require('mongoose');
require('dotenv').config();
(async () => {
await mongoose.connect(`mongodb://${process.env.HOST}:${process.env.PORT}/${process.env.DB_NAME}`);
const schema = new mongoose.Schema({
name: String,
ids: [String] // problematic type
});
const Model = mongoose.model('Test', schema);
await Model.deleteMany();
try {
await Model.bulkWrite([
{
updateOne: {
filter: {
ids: {
$elemMatch: {
$in: ['1']
}
}
},
update: {
$set: {
name: 'test'
},
$addToSet: {
ids: {
$each: ['1', '2']
}
}
},
upsert: true
}
}
], { ordered: true, j: true });
} catch (error) {
console.error(error);
}
await mongoose.disconnect();
})();
Expected Behavior
CASE 1: Filter-matching document found
EXPECTED: ids that don't already exist in document are added to the array ids.
CASE 2: Filter-matching document not found
EXPECTED: A new document is created
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