Function pickClosestJvmCandidate

src/resolution/import-resolver.ts:1282–1305

* Pick the same-FQN candidate closest to `fromPath` by shared directory * prefix, preferring an `expect` declaration on a tie. Used to keep a Kotlin * Multiplatform `expect`/`actual` import resolving within the importer's own * source set instead of an arbitrary platform `actual`.

(candidates: Node[], fromPath: string)

 * source set instead of an arbitrary platform `actual`.
 */
function pickClosestJvmCandidate(candidates: Node[], fromPath: string): Node {
  const fromDirs = fromPath.split('/').slice(0, -1);
  const sharedPrefix = (p: string): number => {
    const d = p.split('/').slice(0, -1);
    let shared = 0;
    for (let i = 0; i < Math.min(fromDirs.length, d.length); i++) {
      if (fromDirs[i] === d[i]) shared++;
      else break;
    }
    return shared;
  };
  const isExpect = (n: Node): boolean => Array.isArray(n.decorators) && n.decorators.includes('expect');
  let best = candidates[0]!;
  let bestProx = sharedPrefix(best.filePath);
  for (let i = 1; i < candidates.length; i++) {
    const c = candidates[i]!;
    const prox = sharedPrefix(c.filePath);
    if (prox > bestProx || (prox === bestProx && isExpect(c) && !isExpect(best))) {
      best = c;
      bestProx = prox;
    }
  }
  return best;
}

export function resolveViaImport(
  ref: UnresolvedRef,