add bx fetch, bump to 0.6.7 (#84)

Author: ikreymer

package.json

@@ -1,6 +1,6 @@
 {
   "name": "browsertrix-behaviors",
-  "version": "0.6.6",
+  "version": "0.6.7",
   "main": "index.js",
   "author": "Webrecorder Software",
   "license": "AGPL-3.0-or-later",

src/autofetcher.ts

@@ -169,8 +169,9 @@ export class AutoFetcher extends BackgroundBehavior {
 
         let success = false;
 
-        // todo: option to use cors or non-cors fetch
-        // success = await this.doFetchNonCors();
+        if ((self as any).__bx_fetch) {
+          success = await (self as any).__bx_fetch(url);
+        }
 
         if (!success) {
           await this.doFetchNonCors(url);