export const get = (value: any, path: string, defaultValue?: any) => {
  return String(path)
    .split('.')
    .reduce((acc, v) => {
      if (v.startsWith('[')) {
        const [, arrPart] = v.split('[');
        v = arrPart.split(']')[0];
      }

      if (v.endsWith(']') && !v.startsWith('[')) {
        const [objPart, arrPart, ...rest] = v.split('[');
        const [firstIndex] = arrPart.split(']');
        const otherParts = rest
          .join('')
          .replaceAll('[', '')
          .replaceAll(']', '.')
          .split('.')
          .filter(str => str !== '');

        return [...acc, objPart, firstIndex, ...otherParts];
      }

      return [...acc, v];
    }, [] as string[])
    .reduce((acc, v) => {
      try {
        acc = acc[v] !== undefined ? acc[v] : defaultValue;
      } catch (e) {
        return defaultValue;
      }

      return acc;
    }, value);
};

const obj = {
  a: {
    b: {
      c: 1
    }
  }
}

const path = 'a.b.c'
const fallback = 2
const parts = path.split('.')

const value = obj[parts[0]]?.[parts[1]]?.[parts[2]] ?? fallback
console.log(value) // 1