/**
 * CloudFormation / SAM extraction (spec-07).
 *
 * Handles JSON and YAML, including the short-form intrinsics (`!Ref`,
 * `!GetAtt`, `!Sub`, …) via a CFN-aware custom-tag set so the `yaml` parser
 * does not choke. Edges: Ref, Fn::GetAtt, Fn::Sub ${var}, DependsOn,
 * Fn::ImportValue (cross-stack → external), nested stacks (TemplateURL).
 * Pseudo-parameters (AWS::Region, …) are ignored as builtins.
 */
import type { IacGraph } from './types.js';
export declare function extractCloudFormation(files: Array<{
    path: string;
    content: string;
}>): IacGraph;
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