babel/packages/babel-plugin-proposal-function-sent/test/fixtures/function-sent/basic/output.js

function gen() {
  return _gen.apply(this, arguments);
}

function _gen() {
  _gen = babelHelpers.skipFirstGeneratorNext(function* () {
    let _functionSent = yield;

    let sent = _functionSent;
  });
  return _gen.apply(this, arguments);
}