Worker working everywhere it seems

webapp/src/function_worker.js

@@ -0,0 +1,76 @@
+function safeRun(fn) {
+  fn().catch((e) => {
+    console.error(e);
+  });
+}
+
+let func = null;
+let pendingRequests = {};
+
+console.log("hello world!");
+
+self.addEventListener("syscall", (event) => {
+  let customEvent = event;
+  let detail = customEvent.detail;
+  pendingRequests[detail.id] = detail.callback;
+  self.postMessage({
+    type: "syscall",
+    id: detail.id,
+    name: detail.name,
+    args: detail.args,
+  });
+});
+
+self.addEventListener("result", (event) => {
+  let customEvent = event;
+  self.postMessage({
+    type: "result",
+    result: customEvent.detail,
+  });
+});
+
+self.addEventListener("app-error", (event) => {
+  let customEvent = event;
+  self.postMessage({
+    type: "error",
+    reason: customEvent.detail,
+  });
+});
+
+self.addEventListener("message", (event) => {
+  safeRun(async () => {
+    let messageEvent = event;
+    let data = messageEvent.data;
+    switch (data.type) {
+      case "boot":
+        console.log("Booting", `./${data.prefix}/function/${data.name}`);
+        importScripts(`./${data.prefix}/function/${data.name}`);
+        self.postMessage({
+          type: "inited",
+        });
+        break;
+      case "invoke":
+        self.dispatchEvent(
+          new CustomEvent("invoke-function", {
+            detail: {
+              args: data.args || [],
+            },
+          })
+        );
+        break;
+      case "syscall-response":
+        let id = data.id;
+        const lookup = pendingRequests[id];
+        if (!lookup) {
+          console.log(
+            "Current outstanding requests",
+            pendingRequests,
+            "looking up",
+            id
+          );
+          throw Error("Invalid request id");
+        }
+        return await lookup(data.data);
+    }
+  });
+});