Function unwrapArray

app/src/static/js/react-bootstrap.js:2056–2058

(arg)

 * otherwise returns the argument. Used for Preact compatibility.
 */
var unwrapArray = function unwrapArray(arg) {
  return Array.isArray(arg) ? arg[0] : arg;
};
/**
 * Takes a maybe-undefined function and arbitrary args and invokes the function
 * only if it is defined.