Interface PackageManagerInterface

interface PackageManagerInterface {
    getApplicationIcon(
        packageName: string,
        flags: number,
        userId: number,
    ): null | FileInputInterfaceStream;
    getApplicationInfo(
        packageName: string,
        flags: number,
        userId: number,
    ): WXApplicationInfo;
    getInstalledPackages(flags: number, userId: number): string;
    getPackageUid(packageName: string, flags: number, userId: number): number;
}