Add Prettier and ESLint tooling (Refs #77)

tests/unit/leaderboard-navigation.test.ts

@@ -1,5 +1,9 @@
 import { describe, expect, it } from 'vitest';
-import { leaderboardReturnHref, playerContextHref, profileViewHref } from '../../src/lib/leaderboard-navigation.js';
+import {
+    leaderboardReturnHref,
+    playerContextHref,
+    profileViewHref
+} from '../../src/lib/leaderboard-navigation.js';
 
 describe('leaderboard profile navigation', () => {
     it('preserves leaderboard scope, search and page while starting profile history on its first page', () => {
@@ -15,7 +19,9 @@ describe('leaderboard profile navigation', () => {
     });
 
     it('keeps profile filters and return context through pagination and resets history pages on filter changes', () => {
-        const current = new URL('http://localhost/leaderboard/players/101?returnTo=%2Fleaderboard%3Fq%3DAce&game=t5&map=t5%3Atheater&metric=highestRound&offset=25');
+        const current = new URL(
+            'http://localhost/leaderboard/players/101?returnTo=%2Fleaderboard%3Fq%3DAce&game=t5&map=t5%3Atheater&metric=highestRound&offset=25'
+        );
         const next = new URL(profileViewHref(current, { offset: '50' }), current);
         expect(next.searchParams.get('offset')).toBe('50');
         expect(next.searchParams.get('returnTo')).toBe('/leaderboard?q=Ace');
@@ -39,10 +45,20 @@ describe('leaderboard profile navigation', () => {
     });
 
     it('restricts supplied return destinations to the local leaderboard', () => {
-        for (const value of [null, '', 'https://example.com/leaderboard', '//example.com/leaderboard', '/leaderboard/players/101', '/leaderboard/../settings', '/leaderboard\\@example.com']) {
+        for (const value of [
+            null,
+            '',
+            'https://example.com/leaderboard',
+            '//example.com/leaderboard',
+            '/leaderboard/players/101',
+            '/leaderboard/../settings',
+            '/leaderboard\\@example.com'
+        ]) {
             expect(leaderboardReturnHref(value)).toBe('/leaderboard');
         }
-        expect(leaderboardReturnHref('/leaderboard?q=A%26B&unrelated=drop#fragment')).toBe('/leaderboard?q=A%26B');
+        expect(leaderboardReturnHref('/leaderboard?q=A%26B&unrelated=drop#fragment')).toBe(
+            '/leaderboard?q=A%26B'
+        );
     });
 
     it('uses the displayed fallback scope when a shared leaderboard URL contains unknown filters', () => {