/**
 * Common extensions for TypeScript/JavaScript files
 *
 * @purity CORE
 */
export declare const SUPPORTED_EXTENSIONS: readonly [".ts", ".tsx", ".js", ".jsx", ".json"];
/**
 * Checks if candidate is valid for suggestions
 *
 * @param candidate - Candidate name
 * @param target - Target name to compare against (optional)
 * @returns true if candidate is valid
 *
 * @pure true
 * @purity CORE
 * @effect None
 * @invariant ∀c: isValidCandidate(c, t) → c.length > 0 ∧ ¬c.startsWith("_") ∧ c ≠ t
 * @complexity O(1)
 * @throws Never
 */
export declare function isValidCandidate(candidate: string, target?: string): boolean;
/**
 * Gets minimum similarity score threshold
 *
 * @returns Minimum score threshold
 *
 * @pure true
 * @purity CORE
 * @effect None
 * @invariant result ∈ [0.33, 0.35]
 * @complexity O(1)
 * @throws Never
 */
export declare function getMinimumSimilarityScore(): number;
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