1 files changed, 31 insertions, 0 deletions
diff --git a/extension/src/webext-bridge/internal/connection-args.ts b/extension/src/webext-bridge/internal/connection-args.ts
new file mode 100644
index 0000000..9b93e19
--- /dev/null
+++ b/extension/src/webext-bridge/internal/connection-args.ts
@@ -0,0 +1,31 @@
+import type { EndpointFingerprint } from './endpoint-fingerprint'
+
+export interface ConnectionArgs {
+  endpointName: string
+  fingerprint: EndpointFingerprint
+}
+
+const isValidConnectionArgs = (
+  args: unknown,
+  requiredKeys: (keyof ConnectionArgs)[] = ['endpointName', 'fingerprint'],
+): args is ConnectionArgs =>
+  typeof args === 'object'
+  && args !== null
+  && requiredKeys.every(k => k in args)
+
+export const encodeConnectionArgs = (args: ConnectionArgs) => {
+  if (!isValidConnectionArgs(args))
+    throw new TypeError('Invalid connection args')
+
+  return JSON.stringify(args)
+}
+
+export const decodeConnectionArgs = (encodedArgs: string): ConnectionArgs => {
+  try {
+    const args = JSON.parse(encodedArgs)
+    return isValidConnectionArgs(args) ? args : null
+  }
+  catch (error) {
+    return null
+  }
+}