fix: use feature detection so browser compatability isn't reduced

notes:
======
 * only Chrome 72+ recognize the "extraHeaders" option value
   - both Firefox and older versions of Chrome
     will throw an error if this value is included
     when adding a listener to a "chrome.webRequest" event

annoyances:
===========
 * the typescript definitions got in the way
 * "@types/chrome" doesn't define types for any of the
   "On---Options" classes in "chrome.webRequest"
 * for this reason, any time they need to be accessed..
   "chrome.webRequest" needs to be cast to "any"
 * a future version of "@types/chrome" will hopefully
   allow this casting to be removed

observations regarding status of browser compatability:
=======================================================
 * tested in Chrome 85
   - Cloudflare
     * working:
       - issuing of tokens
       - redeeming of tokens
   - hCaptcha
     * working:
       - issuing of tokens
       - redeeming of tokens
 * tested in Chrome 30
   - Cloudflare
     * not working:
       - issuing of tokens
   - hCaptcha
     * working:
       - issuing of tokens
       - redeeming of tokens
         * note: uses 2x tokens per bypassed captcha
 * tested in Firefox 97
   - Cloudflare
     * working:
       - issuing of tokens
       - redeeming of tokens
   - hCaptcha
     * not working:
       - issuing of tokens

to do:
======
 * investigate why hCaptcha isn't issuing tokens in Firefox
   - it's behaving as though the original request had been cancelled
   - the request to issue tokens is being correctly sent to the provider,
     but it's being returned with a 403 status code:
         {"success":false,"error-codes":["invalid-data"]}

package.json

@@ -1,6 +1,6 @@
 {
     "name": "privacy-pass",
-    "version": "3.6.2",
+    "version": "3.6.3",
     "private": true,
     "contributors": [
         "Suphanat Chunhapanya <[email protected]>",

public/manifest.json

@@ -1,7 +1,7 @@
 {
     "name": "__MSG_appName__",
     "description": "__MSG_appDescription__",
-    "version": "3.6.2",
+    "version": "3.6.3",
     "manifest_version": 2,
     "default_locale": "en",
     "icons": {

src/background/index.ts

@@ -72,30 +72,42 @@ chrome.tabs.query({ active: true, currentWindow: true }, function (tabs: chrome.
     }
 });
 
-chrome.webRequest.onBeforeRequest.addListener(handleBeforeRequest, { urls: ['<all_urls>'] }, [
-    'blocking',
-    'requestBody',
-    'extraHeaders',
-]);
-
-chrome.webRequest.onBeforeSendHeaders.addListener(handleBeforeSendHeaders, { urls: ['<all_urls>'] }, [
-    'blocking',
-    'requestHeaders',
-    'extraHeaders',
-]);
-
-chrome.webRequest.onHeadersReceived.addListener(handleHeadersReceived, { urls: ['<all_urls>'] }, [
-    'blocking',
-    'responseHeaders',
-    'extraHeaders',
-]);
-
-chrome.webRequest.onCompleted.addListener(handleOnCompleted, { urls: ['<all_urls>'] }, [
-    'responseHeaders',
-    'extraHeaders',
-]);
-
-chrome.webRequest.onErrorOccurred.addListener(handleOnErrorOccurred, { urls: ['<all_urls>'] });
+chrome.webRequest.onBeforeRequest.addListener(
+    handleBeforeRequest,
+    { urls: ['<all_urls>'] },
+    ((<any>chrome.webRequest).OnBeforeRequestOptions !== undefined)
+        ? Object.values((<any>chrome.webRequest).OnBeforeRequestOptions)
+        : ['blocking', 'requestBody']
+);
+
+chrome.webRequest.onBeforeSendHeaders.addListener(
+    handleBeforeSendHeaders,
+    { urls: ['<all_urls>'] },
+    ((<any>chrome.webRequest).OnBeforeSendHeadersOptions !== undefined)
+        ? Object.values((<any>chrome.webRequest).OnBeforeSendHeadersOptions)
+        : ['blocking', 'requestHeaders']
+);
+
+chrome.webRequest.onHeadersReceived.addListener(
+    handleHeadersReceived,
+    { urls: ['<all_urls>'] },
+    ((<any>chrome.webRequest).OnHeadersReceivedOptions !== undefined)
+        ? Object.values((<any>chrome.webRequest).OnHeadersReceivedOptions)
+        : ['blocking', 'responseHeaders']
+);
+
+chrome.webRequest.onCompleted.addListener(
+    handleOnCompleted,
+    { urls: ['<all_urls>'] },
+    ((<any>chrome.webRequest).OnCompletedOptions !== undefined)
+        ? Object.values((<any>chrome.webRequest).OnCompletedOptions)
+        : ['responseHeaders']
+);
+
+chrome.webRequest.onErrorOccurred.addListener(
+    handleOnErrorOccurred,
+    { urls: ['<all_urls>'] },
+);
 
 chrome.cookies.onChanged.addListener(handleChangedCookies);