1 files changed, 23 insertions, 0 deletions
diff --git a/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/CallbackInterface.jsm b/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/CallbackInterface.jsm
new file mode 100644
index 0000000000..74192e46cb
--- /dev/null
+++ b/toolkit/components/uniffi-bindgen-gecko-js/src/templates/js/CallbackInterface.jsm
@@ -0,0 +1,23 @@
+{%- let cbi = ci.get_callback_interface_definition(name).unwrap() %}
+{#- See CallbackInterfaceRuntime.jsm and CallbackInterfaceHandler.jsm for the callback interface handler definition, referenced here as `{{ cbi.handler() }}` #}
+class {{ ffi_converter }} extends FfiConverter {
+    static lower(callbackObj) {
+        return {{ cbi.handler() }}.storeCallbackObj(callbackObj)
+    }
+
+    static lift(handleId) {
+        return {{ cbi.handler() }}.getCallbackObj(handleId)
+    }
+
+    static read(dataStream) {
+        return this.lift(dataStream.readInt64())
+    }
+
+    static write(dataStream, callbackObj) {
+        dataStream.writeInt64(this.lower(callbackObj))
+    }
+
+    static computeSize(callbackObj) {
+        return 8;
+    }
+}