Enables parsing of TypeScript syntax in Babel. This plugin allows Babel to understand and process TypeScript-specific features like types, interfaces, enums, and more. Without this, Babel would throw errors when encountering TypeScript syntax. This plugin only handles the *syntax* itself; a separate tool or Babel plugin (like @babel/plugin-transform-typescript) is needed to actually *transform* the TypeScript code into JavaScript. It's a crucial dependency for effectively using Babel with TypeScript projects.