@ai-sdk/provider-utils/src/to-json-schema/zod3-to-json-schema/get-relative-path.ts

export const getRelativePath = (pathA: string[], pathB: string[]) => {
  let i = 0;
  for (; i < pathA.length && i < pathB.length; i++) {
    if (pathA[i] !== pathB[i]) break;
  }
  return [(pathA.length - i).toString(), ...pathB.slice(i)].join('/');
};