Random errors after running `npm update`

export function data<M extends 'slash' | 'context' = 'slash'>(
  data: M extends 'slash' ? Partial<SlashCommandBuilder> : Partial<ContextMenuCommandBuilder>
) {
  return function <T extends { new (...args: any[]): {} }>(constructor: T) {
    return class extends constructor {
      data = data;
    };
  };
}

export function data<M extends 'slash' | 'context' = 'slash'>(
  data: M extends 'slash' ? Partial<SlashCommandBuilder> : Partial<ContextMenuCommandBuilder>
) {
  return function <T extends { new (...args: any[]): {} }>(constructor: T) {
    return class extends constructor {
      data = data;
    };
  };
}

export default abstract class Command<IsMsg extends boolean = false> {
  public readonly data: IsMsg extends false ? Partial<SlashCommandBuilder> | Partial<ContextMenuCommandBuilder> : null =
    null!;
  public clientPermissions: PermissionsBitField | null = null;

  // only present in slash commands
  public id: If<IsMsg, null, string> = null!;
  // not present in slash commands
  public name: If<IsMsg, string> = null!;
  public description: If<IsMsg, string> = null!;
  public aliases: If<IsMsg, string[]> = null!;
  public args: If<IsMsg, string[] | null> = null!;
  // Not Available - Redirect to slash command
  public slashOnly: If<IsMsg, boolean> = null!;

  public allowDM = false;
  public guildResolve = false;
  public client = client;
  public flags: string[] | null = null!;

  abstract run(
    interaction: ChatInputCommandInteraction | Message | ContextMenuCommandInteraction,
    args?: string[] | null,
    guild?: Guild
  ): unknown;
}

export default abstract class Command<IsMsg extends boolean = false> {
  public readonly data: IsMsg extends false ? Partial<SlashCommandBuilder> | Partial<ContextMenuCommandBuilder> : null =
    null!;
  public clientPermissions: PermissionsBitField | null = null;

  // only present in slash commands
  public id: If<IsMsg, null, string> = null!;
  // not present in slash commands
  public name: If<IsMsg, string> = null!;
  public description: If<IsMsg, string> = null!;
  public aliases: If<IsMsg, string[]> = null!;
  public args: If<IsMsg, string[] | null> = null!;
  // Not Available - Redirect to slash command
  public slashOnly: If<IsMsg, boolean> = null!;

  public allowDM = false;
  public guildResolve = false;
  public client = client;
  public flags: string[] | null = null!;

  abstract run(
    interaction: ChatInputCommandInteraction | Message | ContextMenuCommandInteraction,
    args?: string[] | null,
    guild?: Guild
  ): unknown;
}

@data<'slash'>(
  new SlashCommandBuilder()
    .setName('appeal')
    .setDescription('Create a new appeal for an infraction.')
    .addIntegerOption(option =>
      option
        .setName('id')
        .setDescription('The infraction ID for the infraction you are appealing.')
    )
)

@data<'slash'>(
  new SlashCommandBuilder()
    .setName('appeal')
    .setDescription('Create a new appeal for an infraction.')
    .addIntegerOption(option =>
      option
        .setName('id')
        .setDescription('The infraction ID for the infraction you are appealing.')
    )
)