DARKNET: Darkweb Expansion Project & Bitnode (#2139)

This is BN15. It is a really big change; see the PR for all the details.

src/DarkNet/effects/SaveLoad.ts

@@ -0,0 +1,30 @@
+import { DarknetState } from "../models/DarknetState";
+import { assertObject } from "../../utils/TypeAssertion";
+
+export type DarknetSaveFormat = {
+  storedCycles: number;
+};
+
+export function getDarkNetSave(): DarknetSaveFormat {
+  return {
+    storedCycles: Math.floor(DarknetState.storedCycles),
+  };
+}
+
+export function loadDarkNet(saveString: unknown): void {
+  if (saveString == null || typeof saveString !== "string" || saveString === "") {
+    return;
+  }
+  try {
+    const parsedData: unknown = JSON.parse(saveString);
+    assertObject(parsedData);
+    const { storedCycles } = parsedData;
+    if (typeof storedCycles !== "number" || !Number.isFinite(storedCycles)) {
+      throw new Error(`Invalid storedCycles: ${storedCycles}`);
+    }
+    DarknetState.storedCycles = storedCycles < 0 ? 0 : storedCycles;
+  } catch (error) {
+    console.error(error);
+    console.error("Invalid DarkNet data:", saveString);
+  }
+}