/** DKG owns one fixed server entry inside each client's declared container. */
export declare const DKG_SERVER_KEY = "dkg";
export type McpClientConfigShape = {
    readonly format: 'json';
    readonly serverContainer: 'mcpServers' | 'servers';
} | {
    readonly format: 'jsonc';
    readonly serverContainer: 'servers';
} | {
    readonly format: 'toml';
    readonly serverContainer: 'mcp_servers';
};
/** Canonical fields owned by `dkg mcp setup`. */
export interface DesiredRegistration {
    command: string;
    args: string[];
    env: {
        DKG_HOME: string;
    };
}
/** Persisted client shape at the single extension-preserving merge boundary. */
export interface PersistedRegistration {
    command: string;
    args: string[];
    env: {
        DKG_HOME: string;
        [name: string]: unknown;
    };
    [name: string]: unknown;
}
export type RegistrationEdit = {
    kind: 'remove';
} | {
    kind: 'upsert';
    registration: PersistedRegistration;
};
/** Parsed config objects have named fields; arrays/scalars are never records. */
export declare function isPlainRecord(value: unknown): value is Record<string, unknown>;
/** The semantic edit shared by format adapters; the parsed source stays untouched. */
export declare function applyRegistrationEditToBody(body: Record<string, unknown>, edit: RegistrationEdit, serverContainer: McpClientConfigShape['serverContainer']): Record<string, unknown>;
export interface McpDocumentEditResult {
    content: string;
    warning?: string;
}
/** Formats transform source snapshots; the coordinator owns all filesystem effects. */
export interface McpConfigDocumentAdapter {
    parse(source: string): Record<string, unknown>;
    applyEdit(source: string, edit: RegistrationEdit, serverContainer: McpClientConfigShape['serverContainer']): McpDocumentEditResult;
}
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