Ignoring primary key fields in toObject doesn't work

[thekevinbrown]

Describe the bug

1. Have some entity with an id field.
2. Call toObject(['id']).
3. Serialised object still has id field.

Stack trace
This comes from here:

mikro-orm/lib/entity/EntityTransformer.ts

Line 16 in 88b979a

meta.primaryKeys

The ignoreFields variable is only checked for non primary key fields.

Expected behavior
It's sometimes nice to omit a primary key when serialising an object. Right now our workaround is:

const obj = whatever.toObject(['other', 'properties']);
delete obj.id;
return obj;

Additional context
N/A

Versions

Dependency	Version
node	any
typescript	any
mikro-orm	3.6.15
your-driver	Postgres, any

[B4nan]

Closing as fixed in v4, will be part of alpha 6.