/**
 * Gateway Configuration System
 *
 * Type-safe, extensible configuration with module augmentation.
 * Packages extend FileConfig via `declare module "@agentick/gateway"`.
 *
 * ConfigStore is the read path — always use .get(key), never destructured
 * snapshots. Hot-reload-aware from day one (onChange handlers).
 *
 * Schema registry lets each package register a Zod fragment at module load
 * time. Gateway merges and validates once at startup.
 */
import type { ZodLikeSchema } from "./types.js";
/** Core gateway config — augmented by packages via `declare module` */
export interface FileConfig {
    gateway?: {
        port?: number;
        host?: string;
        transport?: "websocket" | "http" | "both";
        logging?: {
            /** Log level (default: "info"). Set to "trace" for full event stream visibility. */
            level?: "trace" | "debug" | "info" | "warn" | "error" | "fatal" | "silent";
            /** Log output file path. When set, logs are written here instead of stdout. */
            file?: string;
        };
    };
    connectors?: ConnectorConfigs;
    providers?: ProviderConfigs;
}
/** Connector config — each connector plugin augments this */
export interface ConnectorConfigs {
}
/** Provider config — each adapter augments this */
export interface ProviderConfigs {
}
export interface ConfigStore {
    /** Get a top-level config section */
    get<K extends keyof FileConfig>(key: K): FileConfig[K];
    /** Get the fully resolved config snapshot */
    resolved(): Readonly<FileConfig>;
    /** Get the config with secret values replaced by "***" */
    redacted(): Readonly<FileConfig>;
    /** Subscribe to changes (hot-reload ready, noop initially) */
    onChange(handler: (config: Readonly<FileConfig>) => void): () => void;
}
export declare function createConfigStore(resolved: FileConfig, secretPaths?: Set<string>): ConfigStore;
/** Register a config schema fragment (called at module load time) */
export declare function registerConfigSchema(key: string, schema: ZodLikeSchema): void;
/**
 * Build the merged schema from all registered fragments.
 * Returns a ZodLikeSchema whose parse() validates the full config.
 *
 * The merged schema is an object where each registered key maps to
 * its fragment schema (all optional at the top level).
 */
export declare function buildConfigSchema(): ZodLikeSchema;
/** Reset schema registry (for testing only) */
export declare function resetConfigSchemaRegistry(): void;
export declare function bindConfig(store: ConfigStore): void;
export declare function getConfig(): ConfigStore;
export declare function getConfigOrNull(): ConfigStore | null;
/** Reset global binding (for testing only) */
export declare function resetConfigBinding(): void;
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