Feature/configurable browser flags

[Worthingtravis]

🚀 Feature: Browser Flag Customization

Overview

This PR adds an excludeBrowserFlags option that lets developers disable individual default Chromium flags when running Extension.js. It resolves #252, enabling easier testing of scrollbars, audio, and other features impacted by default flags.

---

Background

Extension.js starts browsers with a set of flags that streamline extension development, but a few of them can block key scenarios:

Default flag	Impact on testing
--hide-scrollbars	Hides scrollbars → hard to verify scrolling/overflow UI
--mute-audio	Silences all sound → impossible to test audio features

---

Usage Example

// extension.config.js
module.exports = {
  browser: {
    chrome: {
      // ⛔️ Remove specific defaults
      excludeBrowserFlags: [
        '--hide-scrollbars', // show scrollbars for UI tests
        '--mute-audio'       // enable audio for media tests
      ],
  // ✅ Add your own flags as before
  browserFlags: [
    '--autoplay-policy=no-user-gesture-required'
  ]
}

}

};

---

Compatibility & Testing ✅

• Backward-compatible – no breaking changes

• Verified on Chrome, Firefox, Edge (Manifest V2 & V3)

• No measurable performance impact during launch or reload

---

Benefits

• Better DX – test scroll & audio natively, no hacks

• Cleaner workflow – delete post-install flag‐removal scripts

• Type-safe – full TS support & autocompletion

• Extensible – pattern can cover more defaults later

---

Closes

Closes #252

[cezaraugusto]

++ this is a fantastic contribution, thanks @Worthingtravis!

[Worthingtravis]

++ this is a fantastic contribution, thanks @Worthingtravis!

Happy to help! Thanks for the approval ❤️