chore: Linting

Upgrade ESLint to `v9`

Author: marcobiedermann

.eslintrc

@@ -1 +1 @@
-v20
+v22

.nvmrc

@@ -1,7 +1,8 @@
 type Parenthesis = '(' | ')';
 const OPEN_PARENTHESIS = '(' as const;
+type OpenParenthesis = typeof OPEN_PARENTHESIS;
 
-function isOpenParenthesis(parenthesis: string): boolean {
+function isOpenParenthesis(parenthesis: string): parenthesis is OpenParenthesis {
   return parenthesis === OPEN_PARENTHESIS;
 }
 

2015/day/1/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function add(a: number, b: number): number {
   return a + b;
 }

2015/day/12/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 const TIME = 2503;
 
 function getDistance(speed: number, time: number, rest: number): number {

2015/day/14/index.ts

@@ -1,15 +1,12 @@
-import { readFile } from 'node:fs/promises';
 import { describe, expect, it } from 'vitest';
 import { part1 } from '.';
 
-const input = (await readFile(`${__dirname}/input`, 'utf-8')).split('\n');
-
 describe('Day 15', () => {
   describe('Part 1', () => {
     it('should', () => {
       expect.assertions(1);
 
-      expect(part1(input)).toStrictEqual(0);
+      expect(part1()).toStrictEqual(0);
     });
   });
 });

2015/day/15/index.test.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 const a = {
   capacity: 3,
   durability: 0,
@@ -16,22 +14,6 @@ const b = {
   calories: 9,
 };
 
-const c = {
-  capacity: -1,
-  durability: 0,
-  flavor: 4,
-  texture: 0,
-  calories: 1,
-};
-
-const d = {
-  capacity: 0,
-  durability: 0,
-  flavor: -2,
-  texture: 2,
-  calories: 8,
-};
-
 function calculate(a, b, ai, bi) {
   const capacity = Math.max(0, ai * a.capacity + bi * b.capacity);
   const durability = Math.max(0, ai * a.durability + bi * b.durability);
@@ -41,8 +23,8 @@ function calculate(a, b, ai, bi) {
   return capacity * durability * flavor * texture;
 }
 
-function part1(input: string[]) {
-  const results = [];
+function part1() {
+  const results: number[] = [];
 
   for (let i = 0; i < 100; i += 1) {
     results.push(calculate(a, b, i, 100 - i));

2015/day/15/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 interface Signature {
   [key: string]: number;
 }

2015/day/16/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export, no-eval */
-
 import { sum } from '../../../utils/math';
 
 function mapString(str: string): number {

2015/day/8/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export, no-eval */
-
 import { RADIX } from '../../../utils/math';
 
 function permutater<T>(arr: T[]) {

2015/day/9/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function manhattanDistance(x1: number, x2: number, y1: number, y2: number): number {
   return Math.abs(x1 - x2) + Math.abs(y1 - y2);
 }
@@ -26,7 +24,6 @@ function part1(instructions: string[]): number {
       currentDirection += 1;
     }
 
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
     const direction = directions.at(currentDirection % directions.length)!;
     const newX = direction[0] * blocks;
     const newY = direction[1] * blocks;

2016/day/1/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function part1(digits: number[]): number {
   return digits.reduce((accumulator, currentValue, index) => {
     const nextValue = digits.length - 1 === index ? digits[0] : digits[index + 1];

2017/day/1/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function part1(rows: number[][]): number {
   return rows.reduce((accumulator, currentValue) => {
     const min = Math.min(...currentValue);

2017/day/2/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function part1(passphrases: string[]): number {
   return passphrases.filter((passphrase) => {
     const words = passphrase.split(' ');

2017/day/4/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function part1(boxes: string[]): number {
   let twoLetters = 0;
   let threeLetters = 0;

2018/day/2/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 interface Claim {
   id: string;
   x: number;

2018/day/3/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function peek<T>(stack: T[]): T {
   return stack[stack.length - 1];
 }

2018/day/5/index.ts

@@ -39,7 +39,7 @@ function countLetters(input: string): Map<string, number> {
 }
 
 function find(map: Map<string, number>): boolean {
-  return !![...map].find(([_key, value]) => {
+  return !![...map].find(([, value]) => {
     return value === 2;
   });
 }

2019/day/4/index.ts

@@ -1,5 +1,3 @@
-/* eslint-disable import/prefer-default-export */
-
 function part1(input: number[]): number {
   const [cardPublicKey, doorPublicKey] = input;
 

2020/day/25/index.ts

@@ -0,0 +1,15 @@
+import js from '@eslint/js';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  { ignores: ['dist'] },
+  {
+    extends: [js.configs.recommended, ...tseslint.configs.recommended],
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+  },
+);