chore: finish frontend ESLint migration #18

Enable every plugin recommended preset and replace Biome with ESLint formatting.

Preserve API contracts and JSX whitespace; verify source, tests, builds and tooling.

src/entities/brokerage-account/model/display.ts

@@ -3,24 +3,26 @@ import type {
 	useBrokerageAccounts,
 } from "../api/useBrokerageAccounts";
 
-type Money = NonNullable<
-	BrokerageAccount["portfolioSummary"]
->["totalsByCurrency"][number];
+const VISIBLE_CURRENCY_LIMIT = 2;
 
 type BrokerageAccountCard = {
+	account: BrokerageAccount;
+	positionCounts: null | { bonds: number; stocks: number };
 	source?: NonNullable<
 		ReturnType<typeof useBrokerageAccounts>["meta"]
 	>["dependencies"] extends (infer T)[] | undefined
 		? T
 		: never;
-	account: BrokerageAccount;
-	positionCounts: { stocks: number; bonds: number } | null;
 	summary:
-		| { state: "unavailable" }
+		| { remainingCurrencyCount: number; state: "available"; totals: Money[] }
 		| { state: "empty" }
-		| { state: "available"; totals: Money[]; remainingCurrencyCount: number };
+		| { state: "unavailable" };
 };
 
+type Money = NonNullable<
+	BrokerageAccount["portfolioSummary"]
+>["totalsByCurrency"][number];
+
 function accountTypeKey(type: BrokerageAccount["type"]) {
 	return `accounts.types.${type}` as const;
 }
@@ -33,34 +35,34 @@ function brokerageAccountCards(
 ): BrokerageAccountCard[] {
 	return accounts.map((account) => {
 		const source = dependencies.find(
-			(item) =>
+			item =>
 				item.resourceKey === `portfolio/${encodeURIComponent(account.id)}`,
 		);
 		const summary = account.portfolioSummary;
 		if (!summary)
 			return {
-				source,
 				account,
-				positionCounts: null,
+				positionCounts: /* eslint-disable-line unicorn/no-null -- The existing formatter contract uses null for unavailable data. */ null,
+				source,
 				summary: { state: "unavailable" },
 			};
 		const positionCounts = {
-			stocks: summary.stockPositionCount,
 			bonds: summary.bondPositionCount,
+			stocks: summary.stockPositionCount,
 		};
-		if (!summary.totalsByCurrency.length)
-			return { source, account, positionCounts, summary: { state: "empty" } };
+		if (summary.totalsByCurrency.length === 0)
+			return { account, positionCounts, source, summary: { state: "empty" } };
 		return {
-			source,
 			account,
 			positionCounts,
+			source,
 			summary: {
-				state: "available",
-				totals: summary.totalsByCurrency.slice(0, 2),
 				remainingCurrencyCount: Math.max(
-					summary.totalsByCurrency.length - 2,
+					summary.totalsByCurrency.length - VISIBLE_CURRENCY_LIMIT,
 					0,
 				),
+				state: "available",
+				totals: summary.totalsByCurrency.slice(0, VISIBLE_CURRENCY_LIMIT),
 			},
 		};
 	});