webext-inject-on-install/distribution/register.js

Automatically add content scripts to existing tabs when your extension is installed

import { onExtensionStart } from 'webext-events';
import progressivelyInjectScript from './inject.js';
function register() {
    const { content_scripts: scripts } = chrome.runtime.getManifest();
    if (!scripts?.length) {
        throw new Error('webext-inject-on-install tried to inject content scripts, but no content scripts were found in the manifest.');
    }
    console.debug('webext-inject-on-install: Found', scripts.length, 'content script(s) in the manifest.');
    for (const contentScript of scripts) {
        void progressivelyInjectScript(contentScript);
    }
}
if (globalThis.chrome && !navigator.userAgent.includes('Firefox')) {
    onExtensionStart.addListener(register);
    chrome.runtime.onStartup.addListener(() => {
        onExtensionStart.removeListener(register);
    });
}