I have some text blocks with footnotes but the order is sometimes not correct. The order depends on how the data comes from product.tech_datas. Sometimes it is correct, sometimes not. I need to sort it.

This is how I get the footnote.

const footnote = product.tech_datas.filter(techData => techData.datatype === 'DI');

  if (isEmpty(footnote)) {
    return;
  }

The problem was that product.tech_datas can return footnotes in any order, e.g., ²⁾ first … and then ¹⁾. I probably need to write a sort function to sort ⁰¹²³…

I started with something but I am not sure how to continue...

const superscriptDigits = '⁰¹²³⁴⁵⁶⁷⁸⁹';

function superscriptToNumber(str: string): number {
  const normal = str
    .split('')
    .join('');
  return Number(normal);
}