feat(web): add async solver worker

web/src/solver/solver.ts

@@ -0,0 +1,48 @@
+import type { Color } from "wordle-solver";
+import SolverWorker from "./worker?worker";
+import type { SolverRequest, SolverResponse } from "./types";
+
+let solver_worker = new SolverWorker();
+
+let msg_id = 0;
+
+const pending = new Map<number, {
+  resolve: (value: unknown) => void;
+  reject: (error: unknown) => void;
+}>();
+
+export function solver_guess(word: string[], colors: Color[]): Promise<number> {
+  const id = msg_id++;
+
+  return new Promise((resolve, reject) => {
+    pending.set(id, { resolve, reject });
+
+    const r: SolverRequest = {
+      type: "guess",
+      id: id,
+      input: { word: word, colors: colors },
+    };
+    
+    solver_worker.postMessage(JSON.parse(JSON.stringify(r)));
+  });
+}
+
+
+solver_worker.onmessage = (event: MessageEvent<SolverResponse>) => {
+  let res = event.data;
+  const pendingRequest = pending.get(res.id);
+
+  if (!pendingRequest) {
+    return;
+  }
+
+  pending.delete(res.id);
+  
+  if (res.error) {
+    pendingRequest.reject(res.result);
+  } else if (res.type == "guess") {
+    pendingRequest.resolve(res.result.info_gained);
+  } else if (event.type == "evaluate_words") {
+    pendingRequest.resolve(res.result.stats);
+  }
+};