Switch from bun test to vitest (#193)

collector.ts

@@ -3,8 +3,7 @@
 export const testableUrls = new Map<string, string[]>();
 
 export function addTests(test: string, urls: string[]): void {
-	// eslint-disable-next-line n/prefer-global/process -- Better not import `process` to avoid bundling its polyfills by mistake
-	if (process.env.NODE_ENV !== 'bundling') {
+	if (import.meta.env.VITE_KEEP_URLS === '1') {
 		testableUrls.set(test, urls);
 	}
 }

global.d.ts

@@ -1,5 +1,16 @@
+/* eslint-disable @typescript-eslint/consistent-type-definitions -- Module augmentation */
+
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+	readonly VITE_KEEP_URLS: string;
+}
+
+interface ImportMeta {
+	readonly env: ImportMetaEnv;
+}
+
 // Broaden types because testing against `"undefined"` is fine for our regexes
-// eslint-disable-next-line @typescript-eslint/consistent-type-definitions -- Module augmentation
 interface RegExp {
 	test(s: string | undefined): boolean;
 }

index.test.ts

@@ -1,7 +1,6 @@
-/// <reference types="bun-types" />
 /// <reference lib="dom" />
 import assert from 'node:assert/strict';
-import {test} from 'bun:test';
+import {test} from 'vitest';
 import stripIndent from 'strip-indent';
 import {getAllUrls, getTests} from './collector.js';
 import * as pageDetect from './index.js';