TS2322: Type  typeof Mean  is not assignable to type
RealmObjectConstructor<AnyRealmObject> | ObjectSchema
Type  typeof Mean  is not assignable to type  RealmObjectConstructor<AnyRealmObject> 
Types of property  schema  are incompatible.
Type '{ name: string; primaryKey: string; properties: { id: string; '@id': string; name: { type: string; optional: boolean; }; description: string; active: { type: string; indexed: boolean; optional: boolean; }; ... 8 more ...; __isSynced: { ...; }; }; }' is not assignable to type 'ObjectSchema'.
Type '{ name: string; primaryKey: string; properties: { id: string; '@id': string; name: { type: string; optional: boolean; }; description: string; active: { type: string; indexed: boolean; optional: boolean; }; ... 8 more ...; __isSynced: { ...; }; }; }' is not assignable to type '{ properties: PropertiesTypes; }'.
Types of property  properties  are incompatible.
Type '{ id: string; '@id': string; name: { type: string; optional: boolean; }; description: string; active: { type: string; indexed: boolean; optional: boolean; }; createdAt: string; updatedAt: string; deletedAt: string; ... 5 more ...; __isSynced: { ...; }; }' is not assignable to type 'PropertiesTypes'.
Property  name  is incompatible with index signature.
Type  { type: string; optional: boolean; }  is not assignable to type  string | PropertySchema 
Type  { type: string; optional: boolean; }  is not assignable to type  PropertySchema 
Types of property  type  are incompatible.
Type  string  is not assignable to type  PropertyTypeName

export class Mean extends Realm.Object<Mean, 'id'> {
  id!: number;
  '@id'?: string;
  name?: string;
  description?: string;
  active?: ActiveEnum;
  createdAt?: Date;
  updatedAt?: Date;
  deletedAt?: Date;
  type?: number;
  space?: Space;
  object?: Objects;
  location?: Location;
  __isDeleted?: boolean;
  __isSynced?: boolean;

  static schema = {
    name: MeanName,
    primaryKey: 'id',
    properties: {
      id: 'int',
      '@id': 'string?',
      name: { type: 'string', optional: true },
      description: 'string?',
      active: { type: 'int', indexed: true, optional: true },
      createdAt: 'date?',
      updatedAt: 'date?',
      deletedAt: 'date?',
      type: 'int?',
      space: 'Space?',
      object: 'Objects?',
      location: 'Location',
      __isDeleted: { type: 'bool', default: false, indexed: true },
      __isSynced: { type: 'bool', default: false, indexed: true },
    },
  };
  }

See above