json to csv

jsonToCsv.ts

export const jsonToCsv = (json, filename: string) => {
  const replacer = (key, value) => (value === null ? "" : value);
  const header = Object.keys(json[0]);
  return [
    header.join(","),
    ...json.map((row) =>
      header
        .map((fieldName) => JSON.stringify(row[fieldName], replacer))
        .join(",")
    ),
  ].join("\r\n");
};