selenium [🐛 Bug]: JS firefox driver crashes on setting a profile.

What happened?

I want to use a custom firefox profile, so I set it according the documentation.

However then my code crashes with the provided error.

When I investigated why it is unable to serialize the object to JSON, I found httpRequest.data contains content of the specified firefox profile which is about 200MB in size and it reaches the maximum length of the string. However, the profile should be used for the browser, not be attached to the request body. Is it a bug, or I'm doing something wrong ? In python, using the custom profile works without problems.

How can we reproduce the issue?

const {By,Key,Builder} = require("selenium-webdriver");
const firefox = require('selenium-webdriver/firefox');

async function example(){

       let profile = '/home/kabell/.mozilla/firefox/4rmepnvo.default-release';
       let options = new firefox.Options().setProfile(profile);

       //To wait for browser to build and launch properly
       let driver = await new Builder().forBrowser("firefox").setFirefoxOptions(options).build();

        //To fetch http://google.com from the browser with our code.
        await driver.get("http://google.com");

        //It is always a safe practice to quit the browser after execution
        await driver.quit();

}

example()

Relevant log output

/home/kabell/selenium/node_modules/selenium-webdriver/http/index.js:132
      data = JSON.stringify(httpRequest.data)
                  ^

RangeError: Invalid string length
    at JSON.stringify (<anonymous>)
    at HttpClient.send (/home/kabell/selenium/node_modules/selenium-webdriver/http/index.js:132:19)
    at Executor.execute (/home/kabell/selenium/node_modules/selenium-webdriver/lib/http.js:470:33)



### Operating System

Ubuntu

### Selenium version

Javascript 4.1.1

### What are the browser(s) and version(s) where you see this issue?

Firefox 97

### What are the browser driver(s) and version(s) where you see this issue?

Geckodriver 0.30.0

### Are you using Selenium Grid?

_No response_

Feb 23 '22 07:02 kabell

@kabell, thank you for creating this issue. We will troubleshoot it as soon as we can.

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