Test cannot find step_definition

Cloned repo, updated config, and run command in README. I got test failure. It seems test could not find step_definitions file.
$ ~/repos/cucumber-js-browserstack $ npm install                                                                      [master]
npm WARN cucumber-js-browserstack@0.1.0 No license field.

up to date in 0.525s
# ~/repos/cucumber-js-browserstack $ npm run single                                                                   [master]

> cucumber-js-browserstack@0.1.0 single /Users/foo/cucumber-js-browserstack
> CONFIG_FILE=single ./node_modules/cucumber/bin/cucumber.js features/single.feature

(node:3762) [DEP0022] DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
UUU

Warnings:

1) Scenario: Can find search results # features/single.feature:3
   ? When I type query as "BrowserStack"
       Undefined. Implement with the following snippet:

         When('I type query as {string}', function (string, callback) {
           // Write code here that turns the phrase above into concrete actions
           callback(null, 'pending');
         });

   ? Then I submit
       Undefined. Implement with the following snippet:

         Then('I submit', function (callback) {
           // Write code here that turns the phrase above into concrete actions
           callback(null, 'pending');
         });

   ? Then I should see title "BrowserStack - Google Search"
       Undefined. Implement with the following snippet:

         Then('I should see title {string}', function (string, callback) {
           // Write code here that turns the phrase above into concrete actions
           callback(null, 'pending');
         });

1 scenario (1 undefined)
3 steps (3 undefined)
0m00.000s
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! cucumber-js-browserstack@0.1.0 single: `CONFIG_FILE=single ./node_modules/cucumber/bin/cucumber.js features/single.feature`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the cucumber-js-browserstack@0.1.0 single script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/foo/.npm/_logs/2017-10-02T17_13_20_268Z-debug.log
browserstack / cucumber-js-browserstack

Test cannot find step_definition #9
