/**
 * PatchOp to MEL Renderer
 *
 * Converts PatchOp AST to MEL syntax snippets.
 *
 * Note: These are fragments, not complete domain definitions.
 * The caller is responsible for assembling fragments into a valid MEL domain.
 */
import { TypeExpr, TypeField } from "./type-expr.js";
import { ExprNode } from "./expr-node.js";
export type AddTypeOp = {
    kind: "addType";
    typeName: string;
    typeExpr: TypeExpr;
};
export type AddFieldOp = {
    kind: "addField";
    typeName: string;
    field: TypeField & {
        defaultValue?: unknown;
    };
};
export type SetFieldTypeOp = {
    kind: "setFieldType";
    path: string;
    typeExpr: TypeExpr;
};
export type SetDefaultValueOp = {
    kind: "setDefaultValue";
    path: string;
    value: unknown;
};
export type AddConstraintOp = {
    kind: "addConstraint";
    targetPath: string;
    rule: ExprNode;
    message?: string;
};
export type AddComputedOp = {
    kind: "addComputed";
    name: string;
    expr: ExprNode;
    deps?: string[];
};
export type AddActionAvailableOp = {
    kind: "addActionAvailable";
    actionName: string;
    expr: ExprNode;
};
export type PatchOp = AddTypeOp | AddFieldOp | SetFieldTypeOp | SetDefaultValueOp | AddConstraintOp | AddComputedOp | AddActionAvailableOp;
export interface RenderOptions {
    /**
     * Indentation string (default: "  ")
     */
    indent?: string;
    /**
     * Include comments with metadata
     */
    includeComments?: boolean;
    /**
     * Comment prefix for metadata
     */
    commentPrefix?: string;
}
/**
 * Renders a PatchOp to MEL syntax string.
 *
 * @param op - The PatchOp to render
 * @param options - Rendering options
 * @returns MEL syntax string
 */
export declare function renderPatchOp(op: PatchOp, options?: RenderOptions): string;
/**
 * Gets the type name from a semantic path.
 *
 * @example
 * // "Todo.title" -> "Todo"
 * // "User.address.city" -> "User"
 * // "count" -> undefined
 */
export declare function extractTypeName(path: string): string | undefined;