perf: every test uses one instance

tests/index.ts

@@ -0,0 +1,8 @@
+import { Neis } from '../src'
+import { Logger } from 'tslog'
+
+export const logger = new Logger()
+
+export const neis = new Neis({
+  logger: logger,
+})

tests/meal.test.ts

@@ -1,11 +1,5 @@
-import { MealInfo, Neis } from '../src'
-import { Logger } from 'tslog'
-
-const logger = new Logger()
-
-const neis = new Neis({
-  logger: logger,
-})
+import type { MealInfo } from '../src/types'
+import { logger, neis } from './index'
 
 describe('Meal', () => {
   it('should return MealInfo[]', async () => {

tests/school.test.ts

@@ -1,11 +1,5 @@
-import { Neis, School } from '../src'
-import { Logger } from 'tslog'
-
-const logger = new Logger()
-
-const neis = new Neis({
-  logger: logger,
-})
+import { logger, neis } from '.'
+import type { School } from '../src'
 
 describe('School', () => {
   it('should return School[]', async () => {