Array of Objects to Matrix

/* eslint-disable @typescript-eslint/no-explicit-any */
export function jsonToMatrix(arr: any[]): (string | number | boolean | null)[][] {
  const isObject = (obj: any) => obj !== null && typeof obj === 'object';
 
  const getKeys = (obj: any): string[] => {
    if (!isObject(obj)) {
      return [''];
    }
 
    const keys: string[] = [];
    for (const [key, value] of Object.entries(obj)) {
      for (const nestedKey of getKeys(value)) {
        keys.push(nestedKey ? `${key}.${nestedKey}` : key);
      }
    }
    return keys;
  };
 
  const getValue = (obj: any, path: string) => {
    const paths = path.split('.');
    let value = obj;
    for (const p of paths) {
      if (!isObject(value)) {
        return '';
      }
      value = value[p];
    }
    if (isObject(value) || value === undefined) {
      return '';
    }
    return value;
  };
 
  const keySet = new Set<string>();
  arr.forEach((value) => {
    getKeys(value).forEach((key) => keySet.add(key));
  });
 
  const keys = [...keySet].sort();
 
  const matrix: (string | number | boolean | null)[][] = [keys];
  arr.forEach((obj: any) => {
    matrix.push(keys.map((key: string) => getValue(obj, key)));
  });
 
  return matrix;
}