04/26 New features, new for Firefox

extension/shared/browser-polyfill.js

@@ -0,0 +1,19 @@
+/**
+ * shared/browser-polyfill.js
+ *
+ * Minimal shim so content scripts and bridge.js can use `chrome.*` on Firefox.
+ * Firefox exposes the WebExtensions API as `browser.*` (promise-based).
+ * Chrome exposes it as `chrome.*` (callback-based, with Promise wrappers in MV3).
+ *
+ * This shim only aliases `browser` → `chrome` when `chrome` is not defined,
+ * which is sufficient for the subset of APIs used by PassKeeper content scripts
+ * (chrome.runtime, chrome.storage.session/local, chrome.storage.onChanged).
+ *
+ * For full cross-browser compatibility, replace with the official
+ * Mozilla WebExtension browser-polyfill:
+ *   https://github.com/mozilla/webextension-polyfill
+ */
+if (typeof chrome === 'undefined' && typeof browser !== 'undefined') {
+  // eslint-disable-next-line no-global-assign
+  chrome = browser;
+}