MikroOrm - Composite key with one to many relationship error

This is a minimal reproduction of an error I'm getting when using a composite key with a one to many relationship.

• MikroOrm - Composite key with one to many relationship error
  • Expected behavior
  • What happens
  • Relevant code
  • Steps to reproduce
    • 1. Create a postgresql database in Docker
    • 2. Apply migrations
    • 3. Run the tests
  • Error produced

Expected behavior

• Removing items from the collection and persisting the entity should remove the items from the database.

What happens

• Error is produced when persisting the entity. See Error produced

Relevant code

Entities with composite key and one to many relationship (order 1-* orderItem):

• src/order.entity.ts
• src/order-item.entity.ts

Code which removes items from the order.events collection

• src/app.service.ts#L39

Steps to reproduce

1. Create a postgresql database in Docker

docker run \
    -p 5455:5432 \
    -e POSTGRES_USER=postgres \
    -e POSTGRES_PASSWORD=postgres \
    -e POSTGRES_DB=composite-key-one-to-many-relationship-data \
    -d postgres

2. Apply migrations

 npx mikro-orm migration:fresh

3. Run the tests

yarn test

Error produced

Following is the error produced when running the test:

[Nest] 70996  - 26/09/2022, 21:09:53   ERROR [ExceptionsHandler] Trying to query by not existing property OrderEvent.orderId
Error: Trying to query by not existing property OrderEvent.orderId
    at /Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNode.js:28:27
    at Array.forEach (<anonymous>)
    at new CriteriaNode (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNode.js:23:17)
    at new ScalarCriteriaNode (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/ScalarCriteriaNode.js:9:1)
    at Function.createScalarNode (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNodeFactory.js:25:22)
    at Function.createNode (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNodeFactory.js:22:21)
    at Function.createObjectItemNode (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNodeFactory.js:54:25)
    at /Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNodeFactory.js:45:28
    at Array.reduce (<anonymous>)
    at Function.createObjectNode (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/query/CriteriaNodeFactory.js:44:45)

Removing orphanRemoval: true from the Order entity produces a different error.

diff --git a/src/order.entity.ts b/src/order.entity.ts
index 186d6de..937d4f0 100644
--- a/src/order.entity.ts
+++ b/src/order.entity.ts
@@ -14,9 +14,7 @@ export class Order {
   @PrimaryKey()
   companyId: string;

-  @OneToMany(() => OrderEvent, (orderEvent) => orderEvent.order, {
-    orphanRemoval: true,
-  })
+  @OneToMany(() => OrderEvent, (orderEvent) => orderEvent.order)
   events = new Collection<OrderEvent>(this);

Rerun tests and the following error is produced:

TypeError: Cannot read properties of undefined (reading '0')
    at /Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/AbstractSqlDriver.js:343:88
    at Array.forEach (<anonymous>)
    at /Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/AbstractSqlDriver.js:333:23
    at Array.forEach (<anonymous>)
    at /Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/AbstractSqlDriver.js:331:29
    at Set.forEach (<anonymous>)
    at PostgreSqlDriver.nativeUpdateMany (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/knex/AbstractSqlDriver.js:329:14)
    at ChangeSetPersister.persistManagedEntitiesBatch (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/core/unit-of-work/ChangeSetPersister.js:174:27)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at ChangeSetPersister.persistManagedEntities (/Users/jbw/code/composite-key-one-to-many-relationship/node_modules/@mikro-orm/core/unit-of-work/ChangeSetPersister.js:147:13)