refactor(pkgs): share vitest config and dedupe helpers (#3384)

packages/schema/src/domains/experiment/ExperimentBucket.test.ts

@@ -3,50 +3,10 @@
 import {
 	ExperimentRolloutCountryCodesSchema,
 	type ExperimentTargeting,
-	experimentBucket,
 	experimentRolloutCountryIncludes,
 } from '@fluxer/schema/src/domains/experiment/ExperimentBucket';
 import {describe, expect, test} from 'vitest';
 
-const TARGETED_USER_ID = '1000000000000000001';
-const OTHER_USER_ID = '1000000000000000002';
-
-function syntheticUserIds(count: number): Array<string> {
-	const ids: Array<string> = [];
-	for (let index = 0; index < count; index++) {
-		ids.push((1400000000000000000n + BigInt(index)).toString());
-	}
-	return ids;
-}
-
-describe('experimentBucket', () => {
-	test('stays inside the basis point range for every synthetic id', () => {
-		for (const userId of syntheticUserIds(500)) {
-			const bucket = experimentBucket(userId, 'voice-ns-v1');
-			expect(Number.isInteger(bucket)).toBe(true);
-			expect(bucket).toBeGreaterThanOrEqual(0);
-			expect(bucket).toBeLessThan(10000);
-		}
-	});
-
-	test.each([
-		{userId: TARGETED_USER_ID, salt: 'voice-ns-v1', expected: 8241},
-		{userId: TARGETED_USER_ID, salt: 'voice-ns-v2', expected: 8500},
-		{userId: OTHER_USER_ID, salt: 'voice-ns-v1', expected: 5384},
-		{userId: OTHER_USER_ID, salt: 'voice-ns-v2', expected: 1357},
-	])('preserves the assignment bucket for $userId with salt $salt', ({userId, salt, expected}) => {
-		expect(experimentBucket(userId, salt)).toBe(expected);
-	});
-
-	test('changes with the salt for at least most user ids', () => {
-		const userIds = syntheticUserIds(200);
-		const changed = userIds.filter(
-			(userId) => experimentBucket(userId, 'voice-ns-v1') !== experimentBucket(userId, 'voice-ns-v2'),
-		);
-		expect(changed.length).toBeGreaterThan(userIds.length - 5);
-	});
-});
-
 describe('ExperimentRolloutCountryCodesSchema', () => {
 	test('accepts unique uppercase alpha-2 codes', () => {
 		expect(ExperimentRolloutCountryCodesSchema.parse(['SE', 'BR'])).toEqual(['SE', 'BR']);

packages/schema/vitest.config.ts

@@ -1,18 +1,3 @@
 // SPDX-License-Identifier: AGPL-3.0-or-later
 
-import {defineConfig} from 'vitest/config';
-
-export default defineConfig({
-	resolve: {tsconfigPaths: true},
-	test: {
-		globals: true,
-		environment: 'node',
-		include: ['**/*.{test,spec}.{ts,tsx}'],
-		exclude: ['node_modules', 'dist'],
-		coverage: {
-			provider: 'v8',
-			reporter: ['text', 'json', 'html'],
-			exclude: ['**/*.test.tsx', '**/*.spec.tsx', 'node_modules/'],
-		},
-	},
-});
+export {default} from '../../tsconfigs/vitest.base.mts';