/**
 * Metadata header key. Every system header should start with "devvit-".
 *
 * Synchronize to headers.md.
 */
export declare const Header: Readonly<{
    Actor: "devvit-actor";
    App: "devvit-app";
    AppUser: "devvit-app-user";
    Canary: "devvit-canary";
    Comment: "devvit-comment";
    Context: "devvit-context";
    Debug: "devvit-debug";
    ElysiumInstallationOverride: "devvit-elysium-installation-override";
    FeaturedGames: "devvit-featured-games";
    GQLHost: "devvit-gql-host";
    Installation: "devvit-installation";
    ModPermissions: "devvit-mod-permissions";
    Post: "devvit-post";
    PostAuthor: "devvit-post-author";
    PostData: "devvit-post-data";
    RemoteHostname: "devvit-remote-hostname";
    StreamID: "devvit-stream-id";
    Subreddit: "devvit-subreddit";
    SubredditName: "devvit-subreddit-name";
    User: "devvit-user";
    Username: "devvit-user-name";
    UserSnoovatarUrl: "devvit-user-snoovatar-url";
    UserAgent: "devvit-user-agent";
    Version: "devvit-version";
    Language: "devvit-accept-language";
    Timezone: "devvit-accept-timezone";
    Traceparent: "traceparent";
    Tracestate: "tracestate";
}>;
export type Header = (typeof Header)[keyof typeof Header];
/** Prefix common to all Devvit system headers. */
export declare const headerPrefix: string;
/** See DevvitGlobal and ContextDebugInfo. */
export declare const enum AppDebug {
    /** Enable debug logging for blocks. */
    Blocks = "blocks",
    /**
     * Log the entire reified blocks JSX/XML tree on each render. Eg:
     *
     *   <hstack><text>hi world</text></hstack>
     */
    EmitSnapshots = "emitSnapshots",
    /** Log app state changes. */
    EmitState = "emitState",
    /** Enable debug logging for realtime and useChannel() hook. */
    Realtime = "realtime",
    /** Enable runtime and dispatcher logging. */
    Runtime = "runtime",
    /** Enable debug logging for devvit-surface and dispatcher. */
    Surface = "surface",
    /** Enable debug logging for payments APIs */
    Payments = "payments",
    /** Enable bootstrap logging */
    Bootstrap = "bootstrap",
    /** WebView debug logs */
    WebView = "webView"
}
//# sourceMappingURL=Header.d.ts.map