Function flatten

frontend/scripts/check-react-i18n.mjs:122–133

(obj, prefix = "")

}

function flatten(obj, prefix = "") {
  const result = {};
  for (const [k, v] of Object.entries(obj)) {
    const key = prefix ? `${prefix}.${k}` : k;
    if (typeof v === "object" && v !== null && !Array.isArray(v)) {
      Object.assign(result, flatten(v, key));
    } else {
      result[key] = v;
    }
  }
  return result;
}

function mergeMessages(base, override) {
  const result = { ...base };