refactor: Add ESLint (#259)

Author: dplewis

.github/workflows/ci.yml

@@ -7,6 +7,20 @@ on:
     branches:
       - '**'
 jobs:
+  lint:
+    name: Lint
+    timeout-minutes: 15
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          cache: npm
+      - name: Install dependencies
+        run: npm ci
+      - name: Lint
+        run: npm run lint
   test:
     strategy:
       matrix:

.gitignore

@@ -37,3 +37,6 @@ node_modules
 
 # Mac DS_Store files
 .DS_Store
+
+# Optional eslint cache
+.eslintcache

.nvmrc

@@ -1 +1 @@
-18.16.0
+20.15.0

.releaserc.js

@@ -27,7 +27,7 @@ async function config() {
   // Get branch
   const branch = ref.split('/').pop();
   console.log(`Running on branch: ${branch}`);
-  
+
   // Set changelog file
   //const changelogFile = `./changelogs/CHANGELOG_${branch}.md`;
   const changelogFile = `./CHANGELOG.md`;
@@ -107,7 +107,7 @@ async function loadTemplates() {
 
 function getReleaseComment() {
   const url = repositoryUrl + '/releases/tag/${nextRelease.gitTag}';
-  let comment = '🎉 This change has been released in version [${nextRelease.version}](' + url + ')';
+  const comment = '🎉 This change has been released in version [${nextRelease.version}](' + url + ')';
   return comment;
 }
 

eslint.config.js

@@ -0,0 +1,38 @@
+import js from "@eslint/js";
+
+export default [
+  js.configs.recommended,
+  {
+    languageOptions: {
+      globals: {
+        __dirname: true,
+        beforeEach: true,
+        Buffer: true,
+        console: true,
+        describe: true,
+        fail: true,
+        expect: true,
+        global: true,
+        it: true,
+        jasmine: true,
+        process: true,
+        spyOn: true,
+      },
+    },
+    rules: {
+      "indent": ["error", 2],
+      "linebreak-style": ["error", "unix"],
+      "no-trailing-spaces": 2,
+      "eol-last": 2,
+      "space-in-parens": ["error", "never"],
+      "no-multiple-empty-lines": 1,
+      "prefer-const": "error",
+      "space-infix-ops": "error",
+      "no-useless-escape": "off",
+      "no-var": "error",
+      "no-unused-vars": "warn",
+      "no-undef": "warn",
+      "no-prototype-builtins": "off",
+    }
+  }
+];