Certain protractor API functions cause errors

Question

Why am I receiving errors when I use Protractor API functions? I have scoured the internet for solutions to this problem and I found a couple similar answers, but they didnt work and so I'm asking the community.

I am trying to set up the simplest e2e test with Karma and Protractor. An empty block of test code like this will yield no error:

describe('Mapping Assistant State', () => {
   beforeEach(() => {
   });

   it('should display a table',() => {
      console.log('test');
   });

   it('should click the create Paste button',() => {

    });
});

The problem occurs once I add certain functions from protractor like expect() or browser():

it('should display a table',() => {
    browser.get('someUrl');
    expect(element(by.css('.map')).getText()).toContain('map');

});

Here are some of the contents of my package.json:

"protractor": "^5.3.0",
"karma": "^1.7.1",
"@angular/cli": "^1.6.6",
"typescript": "^2.5.2"
"@angular/core": "^4.3.6",
"rxjs": "^5.4.3",
"@types/selenium-webdriver": "^3.0.6",
"ts-node": "^4.0.1",
"@types/node": "^8.0.58",

Also:

import { browser, by, element } from 'protractor';
import {describe} from 'selenium-webdriver/testing';
import {beforeEach} from 'selenium-webdriver/testing';

Here is my protractor.conf.js file:

const { SpecReporter } = require('jasmine-spec-reporter');

exports.config = {
    allScriptsTimeout: 11000,
    specs: [
        './e2e/**/*.e2e-spec.ts'
    ],
    capabilities: {
        'browserName': 'chrome'
    },
    directConnect: true,
    baseUrl: 'http://localhost:4200/',
    framework: 'jasmine',
    jasmineNodeOpts: {
        showColors: true,
        defaultTimeoutInterval: 30000,
        print: function() {}
    },
    onPrepare() {
        require('ts-node').register({
            project: 'e2e/tsconfig.e2e.json'
        });
        jasmine.getEnv().addReporter(new SpecReporter({ spec: { displayStacktrace: true } }));
    }
};

Once adding any of the Protractor functions and running 'ng test', these errors occur:

    ERROR in ./node_modules/saucelabs/index.js
Module not found: Error: Can't resolve './lib-cov/SauceLabs' in '/Users/moop/Work/frontend/web/node_modules/saucelabs'
 @ ./node_modules/saucelabs/index.js 2:2-32
 @ ./node_modules/protractor/built/driverProviders/sauce.js
 @ ./node_modules/protractor/built/driverProviders/index.js
 @ ./node_modules/protractor/built/runner.js
 @ ./node_modules/protractor/built/index.js
 @ ./e2e/sample.e2e-spec.ts
 @ ./src/test.ts

ERROR in ./node_modules/protractor/built/runner.js
Module not found: Error: Can't resolve 'child_process' in '/Users/moop/Work/frontend/web/node_modules/protractor/built'
 @ ./node_modules/protractor/built/runner.js 54:32-56
 @ ./node_modules/protractor/built/index.js
 @ ./e2e/sample.e2e-spec.ts
 @ ./src/test.ts

ERROR in ./node_modules/protractor/built/bpRunner.js
Module not found: Error: Can't resolve 'child_process' in '/Users/moop/Work/frontend/web/node_modules/protractor/built'
 @ ./node_modules/protractor/built/bpRunner.js 3:24-48
 @ ./node_modules/protractor/built/driverProviders/driverProvider.js
 @ ./node_modules/protractor/built/driverProviders/index.js
 @ ./node_modules/protractor/built/runner.js
 @ ./node_modules/protractor/built/index.js
 @ ./e2e/sample.e2e-spec.ts
 @ ./src/test.ts

ERROR in ./node_modules/protractor/built/debugger.js
Module not found: Error: Can't resolve 'child_process' in '/Users/moop/Work/frontend/web/node_modules/protractor/built'
 @ ./node_modules/protractor/built/debugger.js 67:32-56
 @ ./node_modules/protractor/built/browser.js
 @ ./node_modules/protractor/built/index.js
 @ ./e2e/sample.e2e-spec.ts
 @ ./src/test.ts

ERROR in ./node_modules/selenium-webdriver/firefox/binary.js
Module not found: Error: Can't resolve 'child_process' in '/Users/moop/Work/frontend/web/node_modules/selenium-webdriver/firefox'
 @ ./node_modules/selenium-webdriver/firefox/binary.js 25:14-38
 @ ./node_modules/selenium-webdriver/firefox/index.js
 @ ./node_modules/protractor/built/index.js
 @ ./e2e/sample.e2e-spec.ts
 @ ./src/test.ts

ERROR in ./node_modules/selenium-webdriver/io/exec.js
Module not found: Error: Can't resolve 'child_process' in '/Users/moop/Work/frontend/web/node_modules/selenium-webdriver/io'
 @ ./node_modules/selenium-webdriver/io/exec.js 20:21-45
 @ ./node_modules/selenium-webdriver/remote/index.js
 @ ./node_modules/protractor/built/index.js
 @ ./e2e/sample.e2e-spec.ts
 @ ./src/test.t

Does anyone have an idea about what is causing this and how I can fix it?

Answer 1

install two more package: @types/node and ts-node