### Install web-ext with npm

Source: https://extensionworkshop.com/documentation/develop/getting-started-with-web-ext

Use this command to install the web-ext tool globally using the Node.js npm package manager.

```bash
npm install --global web-ext
```

--------------------------------

### Install web-ext with Homebrew

Source: https://extensionworkshop.com/documentation/develop/getting-started-with-web-ext

Use this command to install the web-ext tool if you are using Homebrew on macOS.

```bash
brew install web-ext
```

--------------------------------

### Detect Extension Installation

Source: https://extensionworkshop.com/documentation/develop/onboard-upboard-offboard-users

Listen for the extension's installation event using `runtime.onInstalled`. This snippet skips execution during development and opens an onboarding page upon initial installation.

```javascript
browser.runtime.onInstalled.addListener(async ({ reason, temporary }) => {
  if (temporary) return; // skip during development
  switch (reason) {
    case "install":
      {
        const url = browser.runtime.getURL("views/installed.html");
        await browser.tabs.create({ url });
        // or: await browser.windows.create({ url, type: "popup", height: 600, width: 600, });
      }
      break;
    // see below
  }
});
```

--------------------------------

### Run with Developer Tools

Source: https://extensionworkshop.com/documentation/develop/web-ext-command-reference-v7

Opens the Developer Tools for the installed extension on startup. Requires web-ext 7.3.0+ and Firefox 106+.

```bash
web-ext run --devtools
```

--------------------------------

### Example adb logcat Output

Source: https://extensionworkshop.com/documentation/develop/developing-extensions-for-firefox-for-android

This is an example of the output you might see when filtering `adb logcat` for add-on messages, indicating an add-on is already installed.

```log
I/Gecko (30440): 1496056181889 addons.xpi WARN Addon with ID @your-addon-id already installed, older version will be disabled
```