Fix terminal command now return actual result from Selenium

[dikwickley]

Fixes: #3899

Solved this issue by keeping a special flag for terminal commands. Instead of returning WebElement, if there was an error thrown by Selenium that is passed.

Example Test:

describe('github.org Demo', function () {
  before((browser) => {
    browser.navigateTo('https://www.ecosia.org/settings');
  });

  it('Demo test ecosia.org', async function (browser) {
    // browser.element('.cookie-consent__actions').getLastElementChild().click();
    const saveButton = browser.element('.settings-form__buttons > .base-button--variant-solid-green');
    const res = await saveButton.click();

    console.log(res);
  });

  after((browser) => browser.end());
});

output:

Thanks in advance for your contribution. Please follow the below steps in submitting a pull request, as it will help us with reviewing it quicker.

• [x] Before marking your PR for review, please test and verify your changes by making appropriate modifications to any of the Nightwatch example tests (present in examples/tests directory of the project) and running them. ecosia.js and duckDuckGo.js are good examples to work with.
• [x] Create a new branch from master (e.g. features/my-new-feature or issue/123-my-bugfix);
• [x] If you're fixing a bug also create an issue if one doesn't exist yet;
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• [x] If your change is based on existing functionality please consider refactoring first. Pull requests that duplicate code will most likely be ignored;
• [x] Do not include changes that are not related to the issue at hand;
• [x] Follow the same coding style with regards to spaces, semicolons, variable naming etc.;
• [ ] Always add unit tests - PRs without tests are most of the times ignored.

[github-actions[bot]]

Status

• ❌ No modified files found in the types directory. Please make sure to include types for any changes you have made. Thank you!.

[dikwickley]

@garg3133 can you review this? thanks.