Add typed JSON output to theme check - #8920

@@ -21,6 +21,7 @@ declare abstract class BaseCommand extends Command {
     static descriptionWithoutMarkdown(): string | undefined;
     static analyticsNameOverride(): string | undefined;
     static analyticsStopCommand(): string | undefined;
+    private jsonOutputFromFlags;
     catch(error: Error & {
         skipOclifErrorHandling: boolean;
     }): Promise<void>;
@@ -36,6 +37,7 @@ declare abstract class BaseCommand extends Command {
     }, TGlobalFlags extends FlagOutput, TArgs extends ArgOutput>(options?: Input<TFlags, TGlobalFlags, TArgs>, argv?: string[]): Promise<ParserOutput<TFlags, TGlobalFlags, TArgs> & {
         argv: string[];
     }>;
+    protected runWithParsedOutput<T>(flags: FlagOutput, execute: () => T): T;
     protected environmentsFilename(): string | undefined;
     protected parseEnvironmentFlags<TFlags extends FlagOutput, TGlobalFlags extends FlagOutput, TArgs extends ArgOutput>(environment: JsonMap, options: Input<TFlags, TGlobalFlags, TArgs>, explicitFlags: FlagOutput): Promise<FlagOutput>;
     protected validateNonTTYFlags(flags: FlagOutput): void;