Cannot save empty nested array or object.

[kdby-io]

Describe the bug

When a nested array or object is empty, it is ignored on saving.

To Reproduce

@Model()
export class A{
 @PartitionKey()
 id: string

 @CollectionProperty({ sorted: true, itemType: B })
 bs: B[]
}

@Model()
export class B {
 props: { [key: string]: any };
}

const a1: A = {
 id: uuid(),
 bs: []
}
const a2: A = {
 id: uuid(),
 bs: [{
 props: {
 hello: {},
 world: 'a2'
 }
 }]
}
const a3: A = {
 id: uuid(),
 bs: [{
 props: {
 hello: {
 arr: []
 },
 world: 'a3'
 }
 }]
}

await this.store.put(a1).exec(); // { id: ..., bs: [] }
await this.store.put(a2).exec(); // { id: ..., bs: [{ props: { world: 'a2' } }] }
await this.store.put(a3).exec(); // { id: ..., bs: [{ props: { world: 'a3' } }] }

Expected behavior

a nested empty array or object can be saved.

[michaelwittwer]

@kdby-io A fix for this is released on the next stream -> ^8.0.0-next.7 #431 (comment)