/**
 * @packageDocumentation
 *
 * Shared constants for configuration resolution.
 */
/**
 * Filenames searched when resolving a configuration file.
 *
 * Mirrors cosmiconfig search behavior for design-lint and is reused across
 * configuration helpers and tests to ensure consistency.
 */
export declare const CONFIG_SEARCH_PLACES: readonly ["package.json", "designlint.config.ts", "designlint.config.mts", "designlint.config.js", "designlint.config.mjs", "designlint.config.cjs", "designlint.config.json", ".designlintrc", ".designlintrc.json", ".designlintrc.yaml", ".designlintrc.yml", ".designlintrc.js", ".designlintrc.cjs", ".designlintrc.mjs", ".designlintrc.ts", ".designlintrc.mts"];
/**
 * Config keys that are merged by concatenating array values from root to leaf.
 */
export declare const CONFIG_ARRAY_MERGE_KEYS: readonly ["plugins", "ignoreFiles", "patterns"];
export type ConfigArrayMergeKey = (typeof CONFIG_ARRAY_MERGE_KEYS)[number];
/**
 * Type guard for keys merged as arrays during hierarchical config loading.
 */
export declare const isConfigArrayMergeKey: (key: string) => key is ConfigArrayMergeKey;
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