Add ESLint standard config (#26)

* Add ESLint standard config

* Adding semicolons to match SERP

.eslintignore

@@ -0,0 +1 @@
+privacy-protections/fingerprinting/helpers/diff.js

.eslintrc

@@ -0,0 +1,10 @@
+{
+    "extends": "standard",
+    "rules": {
+        "indent": ["error", 4],
+        "semi": ["error", "always"]
+    },
+    "env": {
+        "browser": true
+    }
+}

TEMPLATES/complex/.eslintrc

@@ -0,0 +1,11 @@
+{
+    "globals": {
+        "data": "writable"
+    },
+    "parserOptions": {
+        "sourceType": "script",
+        "ecmaFeatures": {
+            "globalReturn": false
+        }
+    },
+}

TEMPLATES/complex/main.js

@@ -10,10 +10,10 @@ const tests = [
         id: 'test-test',
         run: () => {
             // function returning either a value or a promise
-            let resolve, reject;
-            const promise = new Promise((res, rej) => {resolve = res; reject = rej});
+            let res;
+            const promise = new Promise((resolve, reject) => { res = resolve; });
 
-            setTimeout(() => resolve('ok'), 1000);
+            setTimeout(() => res('ok'), 1000);
 
             return promise;
         }
@@ -22,12 +22,12 @@ const tests = [
 
 // object that contains results of all tests
 const results = {
-    page: 'name-of-the-test',// FILL ME OUT!
+    page: 'name-of-the-test', // FILL ME OUT!
     date: null,
     results: []
 };
 
-function resultToHTML(data) {
+function resultToHTML (data) {
     if (Array.isArray(data)) {
         return `<ul>${data.map(r => `<li>${r.test} - ${r.result}</li>`).join('')}</ul>`;
     } else if (data) {
@@ -40,7 +40,7 @@ function resultToHTML(data) {
 /**
  * Test runner
  */
-function runTests() {
+function runTests () {
     startButton.setAttribute('disabled', 'disabled');
     downloadButton.removeAttribute('disabled');
     testsDiv.removeAttribute('hidden');
@@ -52,7 +52,7 @@ function runTests() {
 
     testsDetailsDiv.innerHTML = '';
 
-    function updateSummary() {
+    function updateSummary () {
         testsSummaryDiv.innerText = `Performed ${all} tests${failed > 0 ? ` (${failed} failed)` : ''}. Click for details.`;
     }
 
@@ -85,10 +85,10 @@ function runTests() {
                         updateSummary();
                     });
             } else {
-                valueSpan.innerHTML = resultToHTML(data);;
+                valueSpan.innerHTML = resultToHTML(data);
                 resultObj.value = result || null;
             }
-        } catch(e) {
+        } catch (e) {
             failed++;
             valueSpan.innerHTML = `❌ error thrown ("${e.message ? e.message : e}")`;
         }
@@ -101,13 +101,13 @@ function runTests() {
     startButton.removeAttribute('disabled');
 }
 
-function downloadTheResults() {
+function downloadTheResults () {
     const data = JSON.stringify(results, null, 2);
     const a = document.createElement('a');
-    const url = window.URL.createObjectURL(new Blob([data], {type: 'application/json'}));
+    const url = window.URL.createObjectURL(new Blob([data], { type: 'application/json' }));
     a.href = url;
     a.download = 'fingerprinting-results.json';
-    
+
     document.body.appendChild(a);
     a.click();
 

features/stack-tracing/script.js

@@ -1,20 +1,22 @@
+/* globals log */
+
 (() => {
-  let base = new URL(document.currentScript.src);
-  let party = base.origin == window.top.location.origin ? 'first' : 'third';
-  let scriptName = `${party} party script`;
+    const base = new URL(document.currentScript.src);
+    const party = base.origin === window.top.location.origin ? 'first' : 'third';
+    const scriptName = `${party} party script`;
 
-  log(scriptName, new Error().stack);
+    log(scriptName, new Error().stack);
 
-  let worker = new Worker('./worker.js');
-  worker.addEventListener('message', msg => {
-    let { source, stackValue } = msg.data;
-    log(`${scriptName} loading ${source}`, stackValue);
-  });
-  worker.postMessage({ action: 'setup' });
+    const worker = new Worker('./worker.js');
+    worker.addEventListener('message', msg => {
+        const { source, stackValue } = msg.data;
+        log(`${scriptName} loading ${source}`, stackValue);
+    });
+    worker.postMessage({ action: 'setup' });
 
-  setTimeout(() => {
-    log(`${scriptName} setTimeout`, new Error().stack);
-  }, 0)
+    setTimeout(() => {
+        log(`${scriptName} setTimeout`, new Error().stack);
+    }, 0);
 
-  document.write(`<script>log('${scriptName} write', new Error().stack);</script>`);
+    document.write(`<script>log('${scriptName} write', new Error().stack);</script>`);
 })();

features/stack-tracing/worker.js

@@ -1,17 +1,17 @@
-function log(source, stackValue) {
-  postMessage({ source, stackValue });
+function log (source, stackValue) {
+    postMessage({ source, stackValue });
 }
 
 self.addEventListener('message', msg => {
-  if (msg.data.action && msg.data.action === 'setup') {
-    setup();
-  }
+    if (msg.data.action && msg.data.action === 'setup') {
+        setup();
+    }
 });
 
-function setup() {
-  log("worker", new Error().stack)
+function setup () {
+    log('worker', new Error().stack);
 
-  setTimeout(() => {
-    log("worker setTimeout", new Error().stack)
-  }, 0);
+    setTimeout(() => {
+        log('worker setTimeout', new Error().stack);
+    }, 0);
 }