safe-json-parse-function.js

const safeJsonParse = (str) => {
  try {
    return [null, JSON.parse(str)];
  } catch (err) {
    return [err];
  }
};

// EXAMPLE USAGE
const checkEditorSession = (url, widget) => {
  if (url && typeof url === "string") {
    const decodedUrl = decodeURIComponent(url);

    // console.log("HELLO! PAR", JSON.parse(decodedUrl));
    const [err, json] = safeJsonParse(decodedUrl);
    if (!err) {
      console.log("Successfully parsed JSON:", json);
      const jsonStr = JSON.stringify(json, null, 2);
      get().setContents({ contents: jsonStr });
      return useJson.setState({ json: jsonStr, loading: false });
    }
  }
}