Hi , maybe i do a mistake , but why interface are all Required and not Partial ?

export interface SpinePlayerConfig {
    jsonUrl: string;
    jsonField: string;
    binaryUrl: string;
    atlasUrl: string;
    rawDataURIs: StringMap<string>;
    animation: string;
    animations: string[];
    defaultMix: number;
    skin: string;
    skins: string[];
    premultipliedAlpha: boolean;
    showControls: boolean;
    showLoading: boolean;
    debug: {
        bones: boolean;
        regions: boolean;
        meshes: boolean;
        bounds: boolean;
        paths: boolean;
        clipping: boolean;
        points: boolean;
        hulls: boolean;
    };
    viewport: {
        x: number;
        y: number;
        width: number;
        height: number;
        padLeft: string | number;
        padRight: string | number;
        padTop: string | number;
        padBottom: string | number;
        debugRender: boolean;
        transitionTime: number;
        animations: StringMap<Viewport>;
    };
    alpha: boolean;
    backgroundColor: string;
    fullScreenBackgroundColor: string;
    backgroundImage: {
        url: string;
        x: number;
        y: number;
        width: number;
        height: number;
    };
    mipmaps: true;
    controlBones: string[];
    success: (player: SpinePlayer) => void;
    error: (player: SpinePlayer, msg: string) => void;
    frame: (player: SpinePlayer, delta: number) => void;
    update: (player: SpinePlayer, delta: number) => void;
    draw: (player: SpinePlayer, delta: number) => void;
    loading: (player: SpinePlayer, delta: number) => void;
    downloader: Downloader;
}

This produce error when fill some properties or deep properties !

example code where i get types error !

ts
      let jsonUrl = 'public/data2/Trees/tree2A/skeleton.json';
      let atlasUrl = 'public/data2/Trees/tree2A/skeleton.atlas';

  new SpinePlayer( 'player-container', {
     jsonUrl: jsonUrl,
     atlasUrl: atlasUrl,
     animation: 'idle',
     premultipliedAlpha: true,
     backgroundColor: '#cccccc',
     viewport: {
        debugRender: true,
     },
     showControls: true,
  } );
  console.log( '?SpinePlayer:', SpinePlayer );

Those props should be not required no ?! how can i handle this ?
thanks

EDIT: github: https://github.com/EsotericSoftware/spine-runtimes/issues/2059