fix: add some useful utils

Author: doomsower

src/market/pricefeeds/RedstoneUpdater.ts

@@ -24,6 +24,8 @@ interface UpdatePFTask {
 
 /**
  * Class to update multiple redstone price feeds at once
+ * TODO: historical updates....
+ * TODO: warp time on testnets
  */
 export class RedstoneUpdater extends SDKConstruct {
   #logger?: ILogger;

src/utils/etherscan.ts

@@ -0,0 +1,39 @@
+import type { TransactionReceipt } from "viem";
+
+import type { CreditAccountData } from "../base";
+import type { NetworkType } from "../chain";
+
+export type EtherscanURLParam =
+  | { block: number }
+  | { tx: string }
+  | { address: string };
+
+export function etherscanUrl(
+  entity: EtherscanURLParam | TransactionReceipt | CreditAccountData,
+  network: NetworkType,
+): string {
+  let [prefix, domain] = ["", "etherscan.io"];
+
+  let param: EtherscanURLParam;
+  if ("transactionHash" in entity && "blockHash" in entity) {
+    param = { tx: entity.transactionHash };
+  } else if ("creditAccount" in entity && "creditManager" in entity) {
+    param = { address: entity.creditAccount };
+  } else {
+    param = entity;
+  }
+
+  switch (network) {
+    case "Optimism":
+      prefix = "optimistic.";
+      break;
+    case "Arbitrum":
+      domain = "arbiscan.io";
+      break;
+    case "Base":
+      domain = "basescan.org";
+      break;
+  }
+  const [key, value] = Object.entries(param)[0];
+  return `https://${prefix}${domain}/${key}/${value}`;
+}

src/utils/filterDust.ts

@@ -0,0 +1,20 @@
+import type { Address } from "viem";
+
+import type { CreditAccountData } from "../base";
+
+/**
+ * Helper function to filter out low-balance assets
+ * @param account
+ * @returns
+ */
+export function filterDust(
+  account: CreditAccountData,
+): Record<Address, bigint> {
+  const result: Record<Address, bigint> = {};
+  for (const { token, balance } of account.tokens) {
+    if (balance > 10n) {
+      result[token] = balance;
+    }
+  }
+  return result;
+}

src/utils/index.ts

@@ -2,5 +2,7 @@ export * from "./AddressMap";
 export * from "./bytes32ToString";
 export * from "./childLogger";
 export * from "./createRawTx";
+export * from "./etherscan";
+export * from "./filterDust";
 export * from "./formatter";
 export * from "./json";