Simple utility function to convert a camelCase string into Title Case With Spaces for human readability.

camelCaseToTitleCase.js

/**
 * Converts a camelCase string into Title Case With Spaces for human readability.
 * @param {string} str - A string in camelCase.
 * @returns {string} The input string converted into Title Case With Spaces.
 */
function camelCaseToTitleCase(str) {
  str = str[0].toLocaleUpperCase() + str.slice(1);
  return str.replaceAll(/([A-Z]+)/g, ' $1').slice(1);
}

// camelCaseToTitleCase('exampleCamelCaseString');
// 'Example Camel Case String'

// camelCaseToTitleCase('acronymExampleJSON');
// 'Acronym Example JSON'