pgadmin4/web/pgadmin/static/js/components/PgTree/TreeModelX/index.ts

import { TreeModel, IBasicFileSystemHost } from 'react-aspen'
import { DecorationsManager } from 'aspen-decorations'

export class TreeModelX extends TreeModel {
    public readonly decorations: DecorationsManager
    constructor(host: IBasicFileSystemHost, mountPath: string) {
        super(host, mountPath)
        this.decorations = new DecorationsManager(this.root as any)
    }
}