Function isBase64

apps/OpenSign/src/constant/Utils.js:2014–2018

(str)

  }
};
export const isBase64 = (str) => {
  const base64Pattern =
    /^data:([a-zA-Z0-9]+\/[a-zA-Z0-9-.+]+)?;base64,[A-Za-z0-9+/=]+$/;
  return base64Pattern.test(str);
};
// Break a long word into smaller parts character-by-character
const forceBreakLongWord = (word, width, font, fontSize) => {
  const parts = [];