plugin sdk

squash

sdk/runtime.js

@@ -0,0 +1,28 @@
+// Generic Boa bridge. API methods and their types come from the Rust schema.
+(() => {
+  const call = __slerm_call;
+  const fail = __slerm_error;
+  let plugin;
+  const api = new Proxy(Object.create(null), {
+    get: (_, method) => method === "then" ? undefined : async (params = {}) => {
+      const reply = JSON.parse(call(JSON.stringify({ ...params, method })));
+      if (reply.error !== undefined) throw new Error(reply.error);
+      return reply.result;
+    },
+  });
+  const invoke = (callback, ...args) => {
+    if (callback) Promise.resolve().then(() => callback(...args)).catch(error => fail(String(error)));
+  };
+  Object.defineProperty(globalThis, "__slerm", { value: Object.freeze({
+    activate(definition, version) {
+      if (version !== __slerm_version) throw new Error(`Unsupported Slerm API version ${version}`);
+      if (plugin) throw new Error("A bundle must define exactly one plugin");
+      plugin = definition;
+      invoke(plugin.activate, api);
+    },
+  }) });
+  Object.defineProperty(globalThis, "__slerm_dispatch", { value: event => {
+    if (!plugin) throw new Error("Bundle did not call definePlugin");
+    invoke(plugin.onEvent, event, api);
+  } });
+})();