Function safeReadJSON

frontend/src/views/sql-editor/Sheet/context.ts:242–254

(
  key: string,
  parse: (raw: unknown) => T | undefined
)

// ---- localStorage persistence ----------------------------------------------

const safeReadJSON = <T>(
  key: string,
  parse: (raw: unknown) => T | undefined
): T | undefined => {
  if (typeof window === "undefined") return undefined;
  try {
    const raw = window.localStorage.getItem(key);
    if (raw === null) return undefined;
    return parse(JSON.parse(raw));
  } catch {
    return undefined;
  }
};

const safeWriteJSON = (key: string, value: unknown) => {
  if (typeof window === "undefined") return;