adding more detailed conversion to v2

tools/v2.ts

@@ -2,6 +2,35 @@ import * as fs from 'fs';
 
 const manifest = JSON.parse(fs.readFileSync('./dist/manifest.json', 'utf8'));
 
-manifest.manifest_version = 2;
+manifest.manifest_version = 2
+
+manifest.background.scripts = []
+
+manifest.background.scripts.push(manifest.background.service_worker)
+delete manifest.background.type
+delete manifest.background.service_worker
+manifest.background.persistent = true
+manifest.permissions += manifest.host_permissions
+manifest.permissions += manifest.optional_host_permissions
+delete manifest.host_permissions
+delete manifest.optional_host_permissions
+
+let newContentSecurityPolicy = ""
+
+try {
+    for (const policy of manifest.content_security_policy) {
+        newContentSecurityPolicy += policy + " "
+    }
+} catch (e) {
+    newContentSecurityPolicy = ""
+}
+
+manifest.content_security_policy = newContentSecurityPolicy
+
+try {
+    manifest.web_accessible_resources = manifest.web_accessible_resources.resources
+} catch (e) {
+    manifest.web_accessible_resources = []
+}
 
 fs.writeFileSync('./dist/manifest.json', JSON.stringify(manifest, null, 2));