Implicitly Existential: Add noImplicitAny to TypeScript config, fix related issues

background/constants/currencies.ts

@@ -44,7 +44,9 @@ export const BTC = {
 
 export const BASE_ASSETS = [ETH, BTC]
 
-export const BASE_ASSETS_BY_SYMBOL = BASE_ASSETS.reduce((acc, asset) => {
+export const BASE_ASSETS_BY_SYMBOL = BASE_ASSETS.reduce<{
+  [assetSymbol: string]: FungibleAsset
+}>((acc, asset) => {
   const newAcc = {
     ...acc,
   }

background/lib/alchemy.ts

@@ -3,8 +3,9 @@ import {
   AlchemyProvider,
   AlchemyWebSocketProvider,
 } from "@ethersproject/providers"
-import { logger, utils } from "ethers"
+import { utils } from "ethers"
 
+import logger from "./logger"
 import { AssetTransfer, HexString, SmartContractFungibleAsset } from "../types"
 import { ETH, ETHEREUM } from "../constants"
 
@@ -36,10 +37,20 @@ const alchemyAssetTransferJTD = {
   additionalProperties: true,
 } as const
 
-type AlchemyAssetTransferResponse = JTDDataType<typeof alchemyAssetTransferJTD>
+const alchemyGetAssetTransfersJTD = {
+  properties: {
+    transfers: {
+      elements: alchemyAssetTransferJTD,
+    },
+  },
+} as const
+
+type AlchemyAssetTransferResponse = JTDDataType<
+  typeof alchemyGetAssetTransfersJTD
+>
 
 const isValidAlchemyAssetTransferResponse =
-  ajv.compile<AlchemyAssetTransferResponse>(alchemyAssetTransferJTD)
+  ajv.compile<AlchemyAssetTransferResponse>(alchemyGetAssetTransfersJTD)
 
 /**
  * Use Alchemy's getAssetTransfers call to get historical transfers for an
@@ -82,51 +93,54 @@ export async function getAssetTransfers(
     ]),
   ])
 
-  return rpcResponses[0].transfers
-    .concat(rpcResponses[1].transfers)
-    .map((json: unknown) => {
-      if (!isValidAlchemyAssetTransferResponse(json)) {
-        logger.warn(
-          "Alchemy asset transfer response didn't validate, did the API change?",
-          json
-        )
-        return null
+  return rpcResponses
+    .flatMap((jsonResponse: unknown) => {
+      if (isValidAlchemyAssetTransferResponse(jsonResponse)) {
+        return jsonResponse.transfers
       }
 
+      logger.warn(
+        "Alchemy asset transfer response didn't validate, did the API change?",
+        jsonResponse,
+        isValidAlchemyAssetTransferResponse.errors
+      )
+      return []
+    })
+    .map((transfer) => {
       // TODO handle NFT asset lookup properly
-      if (json.erc721TokenId) {
+      if (transfer.erc721TokenId) {
         return null
       }
 
       // we don't care about 0-value transfers
       // TODO handle nonfungible assets properly
       // TODO handle assets with a contract address and no name
       if (
-        !json.rawContract ||
-        !json.rawContract.value ||
-        !json.rawContract.decimal ||
-        !json.asset
+        !transfer.rawContract ||
+        !transfer.rawContract.value ||
+        !transfer.rawContract.decimal ||
+        !transfer.asset
       ) {
         return null
       }
 
-      const asset = !json.rawContract.address
+      const asset = !transfer.rawContract.address
         ? {
-            contractAddress: json.rawContract.address,
-            decimals: Number(BigInt(json.rawContract.decimal)),
-            symbol: json.asset,
+            contractAddress: transfer.rawContract.address,
+            decimals: Number(BigInt(transfer.rawContract.decimal)),
+            symbol: transfer.asset,
             homeNetwork: ETHEREUM, // TODO is this true?
           }
         : ETH
       return {
         network: ETHEREUM, // TODO make this friendly across other networks
         assetAmount: {
           asset,
-          amount: BigInt(json.rawContract.value),
+          amount: BigInt(transfer.rawContract.value),
         },
-        txHash: json.hash,
-        to: json.to,
-        from: json.from,
+        txHash: transfer.hash,
+        to: transfer.to,
+        from: transfer.from,
         dataSource: "alchemy",
       } as AssetTransfer
     })
@@ -182,7 +196,8 @@ export async function getTokenBalances(
   if (!isValidAlchemyTokenBalanceResponse(json)) {
     logger.warn(
       "Alchemy token balance response didn't validate, did the API change?",
-      json
+      json,
+      isValidAlchemyTokenBalanceResponse.errors
     )
     return []
   }

background/lib/erc20.ts

@@ -38,7 +38,9 @@ export async function getBalances(
     tokens.map((t) => t.contractAddress)
   )
 
-  const assetByAddress = tokens.reduce((acc, asset) => {
+  const assetByAddress = tokens.reduce<{
+    [contractAddress: string]: SmartContractFungibleAsset
+  }>((acc, asset) => {
     const newAcc = { ...acc }
     newAcc[asset.contractAddress.toLowerCase()] = asset
     return newAcc

background/lib/logger.ts

@@ -9,7 +9,7 @@ enum LogLevel {
   error = "error",
 }
 
-function genericLogger(level: LogLevel, input: any[]) {
+function genericLogger(level: LogLevel, input: unknown[]) {
   console[level](...input)
 
   const stackTrace = new Error().stack.split("\n").filter((line) => {
@@ -29,19 +29,19 @@ function genericLogger(level: LogLevel, input: any[]) {
 }
 
 const logger = {
-  log(...input: any[]) {
+  log(...input: unknown[]): void {
     genericLogger(LogLevel.log, input)
   },
 
-  info(...input: any[]) {
+  info(...input: unknown[]): void {
     genericLogger(LogLevel.info, input)
   },
 
-  warn(...input: any[]) {
+  warn(...input: unknown[]): void {
     genericLogger(LogLevel.warn, input)
   },
 
-  error(...input: any[]) {
+  error(...input: unknown[]): void {
     genericLogger(LogLevel.error, input)
   },
 }

background/lib/prices.ts

@@ -29,7 +29,11 @@ export async function getPrice(
     return null
   }
 
-  return json ? parseFloat(json[coingeckoCoinId][currencySymbol]) : null
+  return json
+    ? parseFloat(
+        json[coingeckoCoinId][currencySymbol] as string // FIXME Drop as when strict mode arrives and price schema type can include this.
+      )
+    : null
 }
 
 function multiplyByFloat(n: bigint, f: number, precision: number) {
@@ -78,7 +82,7 @@ export async function getPrices(
               amounts: [
                 multiplyByFloat(
                   BigInt(10) ** BigInt(c.decimals),
-                  parseFloat(simpleCoinPrices[symbol]),
+                  simpleCoinPrices[symbol] as number, // FIXME Drop as when strict mode arrives and price schema type can include this.
                   8
                 ),
                 BigInt(1),
@@ -113,7 +117,14 @@ export async function getEthereumTokenPrices(
   const prices: {
     [index: string]: UnitPricePoint
   } = {}
-  Object.entries(json).forEach(([address, priceDetails]) => {
+  // TODO Improve typing with Ajv validation.
+  Object.entries(
+    json as {
+      [address: string]: { last_updated_at: number } & {
+        [currencySymbol: string]: string
+      }
+    }
+  ).forEach(([address, priceDetails]) => {
     // TODO parse this as a fixed decimal rather than a number. Will require
     // custom JSON deserialization
     const price: number = Number.parseFloat(
@@ -128,12 +139,9 @@ export async function getEthereumTokenPrices(
           symbol: currencySymbol.toUpperCase(),
           decimals: fiatDecimals,
         },
-        amount: BigInt(price * 10 ** fiatDecimals),
+        amount: BigInt(Math.trunc(price * 10 ** fiatDecimals)),
       },
-      time: Number.parseInt(
-        (priceDetails as { last_updated_at }).last_updated_at || 0,
-        10
-      ),
+      time: priceDetails.last_updated_at,
     }
   })
   return prices

background/lib/utils/index.ts

@@ -6,7 +6,7 @@ export function normalizeEVMAddress(address: string | Buffer): HexString {
   return normalizeHexAddress(address)
 }
 
-export function convertToEth(value: string | number): string {
+export function convertToEth(value: string | number | bigint): string {
   if (value && value >= 1) {
     return utils.formatUnits(BigInt(value))
   }

background/lib/validation.ts

@@ -24,7 +24,7 @@ const coingeckoPriceSchema = {
     },
     additionalProperties: true,
   },
-}
+} as const
 
 type CoinGeckoPriceDataJtd = JTDDataType<typeof coingeckoPriceSchema>
 

background/main.ts

@@ -1,6 +1,6 @@
 import { browser } from "webextension-polyfill-ts"
 import { alias, wrapStore } from "webext-redux"
-import { configureStore, isPlain } from "@reduxjs/toolkit"
+import { configureStore, isPlain, Middleware } from "@reduxjs/toolkit"
 import devToolsEnhancer from "remote-redux-devtools"
 import ethers from "ethers"
 
@@ -36,12 +36,8 @@ import { assetsLoaded, newPricePoint } from "./redux-slices/assets"
 import {
   emitter as keyringSliceEmitter,
   updateKeyrings,
-  importLegacyKeyring,
 } from "./redux-slices/keyrings"
-import {
-  transactionOptions,
-  emitter as transactionSliceEmitter,
-} from "./redux-slices/transaction"
+import { emitter as transactionSliceEmitter } from "./redux-slices/transaction"
 import { allAliases } from "./redux-slices/utils"
 import BaseService from "./services/base"
 
@@ -63,7 +59,7 @@ const devToolsSanitizer = (input: unknown) => {
   }
 }
 
-const reduxCache = (store) => (next) => (action) => {
+const reduxCache: Middleware = (store) => (next) => (action) => {
   const result = next(action)
   const state = store.getState()