Use types without any import statements

[olfek]

@types/firefox-webext-browser can be used without any import statements by adding
firefox-webext-browser to tsconfig.json > compilerOptions > types.

When I try to do the same with this package, it does not work.

After some investigation, the cause appears to be the import statements in the index.d.ts file which @types/firefox-webext-browser does not have (import statements).

This workaround (fixes?) the problem:

diff --git "a/webextension-polyfill/index.d.ts" "b/webextension-polyfill/index.d.ts"
index 694e9b6..0dcc4de 100644
--- "a/webextension-polyfill/index.d.ts"
+++ "b/webextension-polyfill/index.d.ts"
@@ -59,7 +59,10 @@ import { WebNavigation as ImportedWebNavigation } from "./namespaces/webNavigati
 import { WebRequest as ImportedWebRequest } from "./namespaces/webRequest";
 import { Windows as ImportedWindows } from "./namespaces/windows";

-declare namespace Browser {
+declare global
+{
+    namespace browser {
         /**
          * Monitor extension activity
          *
@@ -841,6 +844,8 @@ declare namespace Browser {
         export import WebRequest = ImportedWebRequest;
         export import Windows = ImportedWindows;
     }
+}

 // eslint-disable-next-line @definitelytyped/export-just-namespace
-export = Browser;
+export = browser;

Thanks to: https://stackoverflow.com/a/66279933