2022 - Upgraded Jest, switched from require to import, added eslint.

Author: davefollett

2022/javascript/.eslintignore

@@ -0,0 +1 @@
+node_modules/

2022/javascript/.eslintrc.cjs

@@ -0,0 +1,16 @@
+module.exports = {
+    "env": {
+        "browser": true,
+        "es2021": true
+    },
+    "extends": "eslint:recommended",
+    "overrides": [
+    ],
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "rules": {
+        "semi": ["error", "always"],
+    }
+}

2022/javascript/.npmrc

@@ -0,0 +1,2 @@
+# Enforce the engine settings in package.json
+engine-strict=true

2022/javascript/day-01/index.js

@@ -1,8 +1,11 @@
 // https://adventofcode.com/2022/day/1
 
-const readline = require("readline");
-const fs = require("fs");
-const { performance } = require("perf_hooks");
+// const readline = require("readline");
+// import * as readline from 'node:readline';
+// const fs = require("fs");
+// import * as fs from 'node:fs';
+// const { performance } = require("perf_hooks");
+import { performance } from 'node:perf_hooks';
 
 let results = {
   title: "Day 01",
@@ -18,18 +21,18 @@ let results = {
 
 function part1() {
 
-  let result = 0
+  let result = 0;
 
-  return result
+  return result;
 }
 
 function part2() {
-  let result = 0
+  let result = 0;
 
-  return result
+  return result;
 }
 
-exports.run = function run() {
+export function run() {
   let start = performance.now();
   results.part1.answer = part1();
   results.part1.time = (performance.now() - start).toFixed(2);
@@ -39,4 +42,4 @@ exports.run = function run() {
   results.part2.time = (performance.now() - start).toFixed(2);
 
   return results;
-};
+}

2022/javascript/index.js

@@ -1,5 +1,7 @@
-let express = require("express");
-const day01 = require("./day-01");
+// let express = require("express");
+import express from 'express';
+import { run as day01Run } from './day-01/index.js';
+// const day01 = require("./day-01");
 // const day02 = require("./day-02");
 // const day03 = require("./day-03");
 // const day04 = require("./day-04");
@@ -31,7 +33,7 @@ app.get("/", (req, res) => {
 });
 
 app.get("/day-01", (req, res) => {
-  const results = day01.run();
+  const results = day01Run();
   res.send(template(formatResult(results)));
 });