index.js

import camelcase from 'camelcase';

const PUNCTUATION = /[^\p{L}\p{N}]+/ug;

const toString = input => {
  if (input == null) return '';

  if (Array.isArray(input)) {
    return input.map(s => s.toString().trim()).filter(s => s.length > 0).join(' ');
  }

  if (typeof input === 'function') {
    return input.name ? input.name : '';
  }

  if (typeof input.toString !== 'function') {
    return '';
  }

  return input.toString().trim();
};

export const pascalcase = (value, options = {}) => {
  const input = toString(value);
  const regex = options.punctuationRegex ?? PUNCTUATION;
  const output = input ? camelcase(regex ? input.replace(regex, ' ') : input, options) : '';
  return output ? output[0].toLocaleUpperCase(options.locale) + output.slice(1) : '';
};

export default pascalcase;