Function matchFuzzy

src/resolution/name-matcher.ts:2150–2178

(
  ref: UnresolvedRef,
  context: ResolutionContext
)

 * Fuzzy match - last resort with lower confidence
 */
export function matchFuzzy(
  ref: UnresolvedRef,
  context: ResolutionContext
): ResolvedRef | null {
  const lowerName = ref.referenceName.toLowerCase();

  // Use pre-built lowercase index for O(1) lookup instead of scanning all nodes
  const candidates = context.getNodesByLowerName(lowerName);

  // Filter to callable kinds only (function, method, class)
  const callableKinds = new Set(['function', 'method', 'class']);
  const callableCandidates = applyLanguageGate(candidates.filter((n) => callableKinds.has(n.kind)), ref);

  // Prefer same-language matches
  const sameLanguageCandidates = callableCandidates.filter(n => n.language === ref.language);
  const finalCandidates = sameLanguageCandidates.length > 0 ? sameLanguageCandidates : callableCandidates;

  if (finalCandidates.length === 1) {
    const isCrossLanguage = finalCandidates[0]!.language !== ref.language;
    return {
      original: ref,
      targetNodeId: finalCandidates[0]!.id,
      confidence: isCrossLanguage ? 0.3 : 0.5,
      resolvedBy: 'fuzzy',
    };
  }

  return null;
}

/**
 * Match all strategies in order of confidence