@zohodesk/components/es/utils/getInitial.js

Dot UI is a customizable React component library built to deliver a clean, accessible, and developer-friendly UI experience. It offers a growing set of reusable components designed to align with modern design systems and streamline application development

export function getInitial(firstName = '', lastName = '') {
  let initial = '';

  if (firstName) {
    firstName = firstName.trim();
    initial = firstName[0];
  }

  if (lastName) {
    lastName = lastName.trim();
    initial += initial ? lastName[0] : lastName.substring(0, 2);
  }

  return initial ? initial.toUpperCase() : initial;
}
export function getInitialByPattern(firstName, lastName, pattern) {
  if (pattern[0] === 'FIRST_NAME') {
    return getInitial(firstName, lastName);
  }

  return getInitial(lastName, firstName);
}