chore(ci): add lint checks

Refs: #742

.eslintignore

@@ -0,0 +1 @@
+**/bundle.js

.eslintrc

@@ -10,7 +10,20 @@
   ],
   "parser": "@typescript-eslint/parser",
   "rules": {
+    "quotes": [
+      "error",
+      "single",
+      {
+        "avoidEscape": true
+      }
+    ],
     "indent": ["error", 2],
+    "no-var": "error",
+    "object-curly-spacing": [
+      "error",
+      "always"
+    ],
+    "@typescript-eslint/no-var-requires": 0,
     "@typescript-eslint/ban-ts-comment": 0,
     "@typescript-eslint/no-unused-vars": [
       "error",
@@ -21,8 +34,7 @@
   },
   "ignorePatterns": [
     "test/integration/",
-    "dist",
-    "examples"
+    "dist"
   ],
   "plugins": [
     "@typescript-eslint",
@@ -32,6 +44,7 @@
   {
     "browser": true,
     "node": true,
-    "es6": true
+    "es6": true,
+    "webextensions": true
   }
 }

.github/workflows/node.js.yml

@@ -8,52 +8,86 @@ on:
 
 jobs:
   unit:
-
     runs-on: ubuntu-latest
-
     strategy:
       matrix:
         node-version: [12.x, 14.x, 16.x]
-
     steps:
-    - uses: actions/checkout@v2
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
       with:
         node-version: ${{ matrix.node-version }}
-    - run: npm ci
-    - run: npm test
+        cache: 'npm'
 
-  integration:
+    - name: Build
+      run: npm ci
 
-    runs-on: ubuntu-latest
+    - name: Run unit tests
+      run: npm test
 
+  integration:
+    runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - name: Use Node.js
-      uses: actions/setup-node@v1
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
       with:
         node-version: '14.x'
-    - name: npm install, build, and test
+        cache: 'npm'
+        cache-dependency-path: |
+          package-lock.json
+          test/integration/package-lock.json
+
+    - name: Build
       run: |
         npm ci
         cd test/integration
         npm ci
-        npm test
+
+    - name: Run integration tests
       env:
         CI: true
         BROWSERSTACK_USERNAME: ${{ secrets.BROWSERSTACK_USERNAME }}
         BROWSERSTACK_ACCESS_KEY: ${{ secrets.BROWSERSTACK_ACCESS_KEY }}
+      run: npm run test:integration
 
   tsd:
-
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v2
-    - name: Use Node.js
-      uses: actions/setup-node@v1
+    - name: Checkout
+      uses: actions/checkout@v3
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v3
       with:
         node-version: '14.x'
-    - run: npm ci
-    - run: npm run tsd
+        cache: 'npm'
+
+    - name: Build
+      run: npm ci
+
+    - name: Check Typescript type definitions
+      run: npm run tsd
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '14.x'
+          cache: 'npm'
+
+      - name: Build
+        run: npm ci
+
+      - name: Run lint checks
+        run: npm run lint

commitlint.config.js

@@ -1 +1 @@
-module.exports = {extends: ['@commitlint/config-conventional']}
+module.exports = { extends: ['@commitlint/config-conventional'] }

examples/almond/main.js

@@ -4,15 +4,16 @@
       console.log(arguments);
     }
   }
-  requirejs(["../../dist/browser/honeybadger"], function(Honeybadger) {
+  // eslint-disable-next-line no-undef
+  requirejs(['../../dist/browser/honeybadger'], function(Honeybadger) {
     Honeybadger.configure({
-      apiKey: prompt("Enter the API key for your Honeybadger project:"),
+      apiKey: prompt('Enter the API key for your Honeybadger project:'),
       debug: true
     });
-    log("Attaching event");
-    document.getElementById('btn').addEventListener("click", function(){
-      log("Failing in event listener...");
-      throw new Error("This is a test error raised from an addEventListener callback.");
+    log('Attaching event');
+    document.getElementById('btn').addEventListener('click', function(){
+      log('Failing in event listener...');
+      throw new Error('This is a test error raised from an addEventListener callback.');
     });
   });
 })();

examples/aws-lambda/handler.js

@@ -20,39 +20,39 @@ module.exports = {
   syncError: honeybadgerWrapper(async (event) => {
     const willReport = event.body && event.body.report === 'yes';
     if (willReport) {
-      throw new Error("sync-error");
+      throw new Error('sync-error');
     }
 
     return formatJSONResponse({
-      message: `You summoned the sync-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.`,
+      message: "You summoned the sync-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.",
       event,
     });
   }),
   asyncError: honeybadgerWrapper(async (event) => {
     const asyncThatThrows = async (shouldThrow) => {
       return new Promise((resolve, reject) => {
         setTimeout(() => {
-          (shouldThrow ? reject(new Error("async-error")): resolve())
+          (shouldThrow ? reject(new Error('async-error')): resolve())
         }, 300);
       });
     }
 
     const willReport = event.body && event.body.report === 'yes';
     await asyncThatThrows(willReport);
     return formatJSONResponse({
-      message: `You summoned the async-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.`,
+      message: "You summoned the async-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.",
       event,
     });
   }),
   callbackError: honeybadgerWrapper((event, context, callback) => {
     const willReport = event.body && event.body.report === 'yes';
     if (willReport) {
-      callback(new Error("callback-error"));
+      callback(new Error('callback-error'));
       return;
     }
 
     const resp = formatJSONResponse({
-      message: `You summoned the callback-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.`,
+      message: "You summoned the callback-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.",
       event,
     });
     callback(null, resp);
@@ -65,15 +65,15 @@ module.exports = {
       }
 
       const resp = formatJSONResponse({
-        message: `You summoned the set-timeout-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.`,
+        message: "You summoned the setTimeout-error handler! Nothing was sent to Honeybadger. POST with { 'body': { 'report': 'yes' } } to report to Honeybadger.",
         event,
       });
       callback(null, resp);
     }, 300);
   }),
   timeoutWarning: honeybadgerWrapper(async (event) => {
     const asyncThatThrows = async (shouldTimeout) => {
-      return new Promise((resolve, reject) => {
+      return new Promise((resolve, _reject) => {
         setTimeout(() => {
           resolve()
         }, shouldTimeout ? (1000 * 60 * 20) : 200) // 20 minutes
@@ -83,7 +83,7 @@ module.exports = {
     const shouldTimeout = event.body && event.body.timeout === 'yes';
     await asyncThatThrows(shouldTimeout);
     return formatJSONResponse({
-      message: `You summoned the timeoutWarning handler! Nothing was sent to Honeybadger. POST with { 'body': { 'timeout': 'yes' } } to run the function until it times out.`,
+      message: "You summoned the timeoutWarning handler! Nothing was sent to Honeybadger. POST with { 'body': { 'timeout': 'yes' } } to run the function until it times out.",
       event,
     });
   }),

examples/browserify/main.js

@@ -1,6 +1,6 @@
-var hb = require('../../dist/browser/honeybadger');
+let hb = require('../../dist/browser/honeybadger');
 hb.configure({
-  apiKey: prompt("Enter the API key for your Honeybadger project:"),
+  apiKey: prompt('Enter the API key for your Honeybadger project:'),
   debug: true
 });
 
@@ -12,14 +12,14 @@ hb.configure({
   }
 
   window.onload = function(){
-    log("Attaching event");
-    document.getElementById('btn').addEventListener("click", function(){
-      log("Failing in event listener...");
-      throw new Error("This is a test error raised from an addEventListener callback.");
+    log('Attaching event');
+    document.getElementById('btn').addEventListener('click', function(){
+      log('Failing in event listener...');
+      throw new Error('This is a test error raised from an addEventListener callback.');
     });
 
-    document.getElementById('btn-check-in').addEventListener("click", function(){
-      const checkInId = prompt("Enter check-in id:")
+    document.getElementById('btn-check-in').addEventListener('click', function(){
+      const checkInId = prompt('Enter check-in id:')
       hb.checkIn(checkInId)
     });
   };

examples/chrome-extension/error-reporting.js

@@ -1,4 +1,5 @@
+// eslint-disable-next-line no-undef
 Honeybadger.configure({
   apiKey: 'YOUR_API_KEY',
   environment: 'production'
-});
+});

examples/chrome-extension/options.js

@@ -1,6 +1,6 @@
-let page = document.getElementById("buttonDiv");
-let selectedClassName = "current";
-const presetButtonColors = ["#3aa757", "#e8453c", "#f9bb2d", "#4688f1"];
+let page = document.getElementById('buttonDiv');
+let selectedClassName = 'current';
+const presetButtonColors = ['#3aa757', '#e8453c', '#f9bb2d', '#4688f1'];
 
 // Reacts to a button click by marking the selected button and saving
 // the selection
@@ -21,12 +21,12 @@ function handleButtonClick(event) {
 
 // Add a button to the page for each supplied color
 function constructOptions(buttonColors) {
-  chrome.storage.sync.get("color", (data) => {
+  chrome.storage.sync.get('color', (data) => {
     let currentColor = data.color;
     // For each color we were provided…
     for (let buttonColor of buttonColors) {
       // …create a button with that color…
-      let button = document.createElement("button");
+      let button = document.createElement('button');
       button.dataset.color = buttonColor;
       button.style.backgroundColor = buttonColor;
 
@@ -36,19 +36,20 @@ function constructOptions(buttonColors) {
       }
 
       // …and register a listener for when that button is clicked
-      button.addEventListener("click", handleButtonClick);
+      button.addEventListener('click', handleButtonClick);
       page.appendChild(button);
     }
   });
 }
 
 function setupReportErrorListener() {
   const button = document.getElementById('reportErrorButton');
-  button.addEventListener("click", () => {
+  button.addEventListener('click', () => {
+    // eslint-disable-next-line no-undef
     mySecondUndefinedFunction();
   });
 }
 
 // Initialize the page by constructing the color options
 constructOptions(presetButtonColors);
-setupReportErrorListener();
+setupReportErrorListener();

examples/chrome-extension/popup.js

@@ -1,12 +1,12 @@
 // Initialize button with user's preferred color
-let changeColor = document.getElementById("changeColor");
+let changeColor = document.getElementById('changeColor');
 
-chrome.storage.sync.get("color", ({ color }) => {
+chrome.storage.sync.get('color', ({ color }) => {
   changeColor.style.backgroundColor = color;
 });
 
 // When the button is clicked, inject setPageBackgroundColor into current page
-changeColor.addEventListener("click", async () => {
+changeColor.addEventListener('click', async () => {
   let [tab] = await chrome.tabs.query({ active: true, currentWindow: true });
 
   chrome.scripting.executeScript({
@@ -18,7 +18,7 @@ changeColor.addEventListener("click", async () => {
 // The body of this function will be executed as a content script inside the
 // current page
 function setPageBackgroundColor() {
-  chrome.storage.sync.get("color", ({ color }) => {
+  chrome.storage.sync.get('color', ({ color }) => {
     document.body.style.backgroundColor = color;
   });
 }

examples/express/index.js

@@ -21,7 +21,7 @@ app.get('/', (req, res) => {
   res.send('Hello World!')
 })
 
-app.get('/fail', (req, res) => {
+app.get('/fail', (_req, _res) => {
   Honeybadger.setContext({
     local: 'true'
   })