import type { ChildProcess } from 'node:child_process';
declare const classifications: {
    readonly setup_child_unavailable: "named_session_startup_setup_child_unavailable";
    readonly named_session_registration_invalid: "named_session_startup_registration_invalid";
    readonly named_session_provider_authentication_required: "named_session_startup_provider_authentication_required";
    readonly named_session_workspace_write_not_authorized: "named_session_startup_workspace_write_not_authorized";
    readonly named_session_trust_scope_mismatch: "named_session_startup_trust_scope_mismatch";
    readonly codex_session_sandbox_unqualified: "named_session_startup_sandbox_unqualified";
};
export type NamedSessionStartupFailure = typeof classifications[keyof typeof classifications] | 'named_session_startup_child_spawn_failed' | 'named_session_startup_child_exited' | 'named_session_startup_child_failed';
export declare function isNamedSessionStartupFailure(value: unknown): value is NamedSessionStartupFailure;
/** Observe only the freshly spawned handle. Raw stderr stays bounded in memory,
 * never reaches logs/receipts, and is discarded when startup observation ends. */
export declare function observeNamedSessionStartupChild(child: ChildProcess): Readonly<{
    readFailure: () => NamedSessionStartupFailure | undefined;
    dispose(): void;
}>;
export {};
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