export function onSelectPropType()

in src/helpers/propTypes.js [54:82]

• 27 lines of code
• 6 McCabe index (conditional complexity)

export function onSelectPropType(
  props,
  propName,
  componentName,
  location,
  propFullName,
) {
  const prop = props[propName];
  const name = propFullName || propName;
  let error = null;

  if (prop && typeof prop !== 'function') {
    error = new Error(
      `Invalid ${location} \`${name}\` of type \`${typeof prop}\` supplied ` +
        `to \`${componentName}\`, expected \`function\`.`,
    );
  } else if (props.selectedIndex != null && prop == null) {
    error = new Error(
      `The ${location} \`${name}\` is marked as required in \`${componentName}\`, but ` +
        `its value is \`undefined\` or \`null\`.\n` +
        `\`onSelect\` is required when \`selectedIndex\` is also set. Not doing so will ` +
        `make the tabs not do anything, as \`selectedIndex\` indicates that you want to ` +
        `handle the selected tab yourself.\n` +
        `If you only want to set the inital tab replace \`selectedIndex\` with \`defaultIndex\`.`,
    );
  }

  return error;
}