iter-tools-es/impls/$first-or/first-or.js

The iterable toolbox

const {
  iterableCurry,
  callReturn
} = require('../../internal/iterable.js');

function __firstOr(iterable, whenEmpty) {
  const iter = iterable[Symbol.iterator]();
  const {
    value,
    done
  } = iter.next();
  if (done) return whenEmpty;
  callReturn(iter);
  return value;
}

exports.__firstOr = __firstOr;
const firstOr = /*#__PURE__*/iterableCurry(__firstOr, {
  reduces: true
});
exports.firstOr = firstOr;