Issue with JSONColumnType

[dsfcoll]

Hello!
I ran into an issue with the branded JSON type.

Example:

@Column({ type: 'jsonb', nullable: true })
videos: JSONColumnType<{
  [key: string]: {
    size: number;
    bitrate: number;
    dimensions: number[];
    resolution: number;
    metadataSize: number;
  };
}>;

But when we call Object.values(entity.videos), we get an unexpected type:

({
  size: number;
  bitrate: number;
  dimensions: number[];
  resolution: number;
  metadataSize: number;
} | symbol)[]

The issue is the | symbol part. Because of this symbol in the union, we can't easily iterate — every access requires an additional if check.

[igalklebanov]

Hey 👋

Can you provide a minimal reproduction?

[dsfcoll]

Sure!
https://codesandbox.io/p/devbox/cp3cwy?file=%2Findex.ts

v.size is highlighted as an error. Just hover over to get an error