Typescript definitions are not compatible with `strictNullChecks` mode about bitmovin-player-ui

[protyposis]

Released in 2.15.0

[MichalLytek]

@protyposis

The same problem exist in the core typings:

export interface MediaTrackRole {
    schemeIdUri: string;
    value?: string;
    id?: string;
    [key: string]: string;
}

I have this error:

node_modules/bitmovin-player/types/core/PlayerAPI.d.ts:158:5 - error TS2411: Property 'value' of type 'string | undefined' is not assignable to string index type 'string'.
158     value?: string;
        ~~~~~
node_modules/bitmovin-player/types/core/PlayerAPI.d.ts:159:5 - error TS2411: Property 'id' of type 'string | undefined' is not assignable to string index type 'string'.

159     id?: string;
        ~~

node_modules/bitmovin-player/types/core/PlayerConfigAPI.d.ts:1027:5
- error TS2411: Property 'receiverStylesheetUrl' of type 'string | undefined' is not assignable to string index type 'string'.

1027     receiverStylesheetUrl?: string;
         ~~~~~~~~~~~~~~~~~~~~~

And there's no github repo for bitmovin-player package 😕