match-digits.js

import { helper } from '@ember/component/helper';
import { htmlSafe } from '@ember/string';

export function matchDigits([value, max, pad]) {
  max = max.toString();
  value = value.toString();
  return htmlSafe(
    value.length >= max.length ? value : new Array(max.length - value.length + 1).join(pad) + value
  );
}

export default helper(matchDigits);