feat: launch local-first Sudoku workbench

src/workers/solver.worker.ts

@@ -0,0 +1,66 @@
+/// <reference lib="webworker" />
+
+import { PuzzleValidationError } from "../domain";
+import {
+  generateClassic,
+  killerDigitCombinations,
+  minimizePuzzle,
+  solveExact,
+  solveLogically,
+} from "../solver";
+import type {
+  SolverWorkerRequest,
+  SolverWorkerResponse,
+  SolverWorkerValue,
+} from "./protocol";
+
+const scope = self as unknown as DedicatedWorkerGlobalScope;
+
+function run(request: SolverWorkerRequest): SolverWorkerValue {
+  const operation = request.operation;
+  switch (operation.kind) {
+    case "solve":
+      return solveExact(operation.puzzle, operation.options);
+    case "logical":
+      return solveLogically(operation.puzzle, operation.options);
+    case "generate":
+      return generateClassic(operation.options);
+    case "minimize":
+      return minimizePuzzle(operation.puzzle, operation.options);
+    case "killer-combinations":
+      return killerDigitCombinations(operation.options);
+  }
+}
+
+scope.addEventListener("message", (event: MessageEvent<unknown>) => {
+  const input = event.data;
+  if (
+    typeof input !== "object" ||
+    input === null ||
+    typeof (input as { id?: unknown }).id !== "string" ||
+    typeof (input as { operation?: unknown }).operation !== "object"
+  ) {
+    return;
+  }
+  const request = input as SolverWorkerRequest;
+  let response: SolverWorkerResponse;
+  try {
+    response = { id: request.id, ok: true, value: run(request) };
+  } catch (error) {
+    response = {
+      id: request.id,
+      ok: false,
+      error: {
+        name: error instanceof Error ? error.name : "Error",
+        message:
+          error instanceof Error ? error.message : "Unknown solver error",
+        ...(error instanceof PuzzleValidationError
+          ? { issues: error.issues }
+          : {}),
+      },
+    };
+  }
+  scope.postMessage(response);
+});
+
+export {};