shorten constant to fit maximum length accepted by sentry

shortenConstant.js

// shorten constant to fit maximum length accepted by sentry
const shortenConstant = (constantCaseString, maxlength = 25, separator = '_') => {
  // no need to shorten
  if (!constantCaseString || constantCaseString.length < maxlength) {
    return constantCaseString;
  }

  // abbreviate each word to fit the max length
  const splittedConstantCaseTokens = constantCaseString.split(separator);
  if (splittedConstantCaseTokens.length > 1) {
    const maxWordLength = maxlength / splittedConstantCaseTokens.length;

    return splittedConstantCaseTokens
      .map(constantCaseToken => constantCaseToken.substring(0, maxWordLength))
      .join(separator);
  }

  // no way to abbreviate, single word is too long
  // just return the initial part
  return constantCaseString.substr(0, maxlength);
};