/**
 * Per-function CFG / data-flow overlay helper — extracted from `call-graph.ts`
 * (change: modularize-call-graph-builder; analyzer: StableCallGraphBarrel).
 *
 * `buildCfgFor` wraps `buildFunctionCfg` (./cfg.js) with the body-resolution +
 * fail-soft policy the call-graph builder needs: it descends a declaration wrapper
 * (a `const f = () => {}`, a Python `@decorator`'d def) to the node that actually
 * owns the body, and swallows any CFG-builder surprise so the additive overlay can
 * never drop a function's base node/edge data. File-internal (never on
 * `call-graph.ts`'s public surface); imported back by the builder, so the surface
 * is unchanged.
 */
import { type FunctionCfg, type CfgNode } from './cfg.js';
/**
 * Build the per-function CFG + reaching-definitions overlay for one function
 * while its parse tree is still live. `fnNode` is the node captured as the
 * function (may be a declaration wrapper, e.g. a `const f = () => {}`
 * lexical_declaration); this resolves to the node that actually owns the body
 * so arrow/function-expression bodies and params are analyzed too. Fail-soft:
 * returns undefined for unsupported languages or any analysis surprise.
 */
export declare function buildCfgFor(fnNode: CfgNode, language: string): FunctionCfg | undefined;
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