import type { GeneratorContext } from "../../types.js";
/**
 * Looks up a string sibling value by checking ctx.current for each candidate
 * field name. Matching is normalised (case-insensitive, underscores stripped),
 * so "firstName", "first_name", and "voornaam" all resolve against the same slot.
 * Returns the first non-empty match, or undefined if nothing is found.
 */
export declare function siblingString(ctx: GeneratorContext | undefined, ...candidates: string[]): string | undefined;
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