Lint client-side sandbox code

Author: marijnh

html/js/code.js

@@ -49,21 +49,6 @@ addEventListener("load", () => {
         return chapterData[i]
   }
 
-  function getURL(url, callback) {
-    let req = new XMLHttpRequest()
-    req.open("GET", url, true)
-    req.addEventListener("load", () => {
-      if (req.status < 400)
-        callback(null, req.responseText)
-      else
-        callback(new Error("Request failed: " + req.statusText))
-    })
-    req.addEventListener("error", () => {
-      callback(new Error("Network error"))
-    })
-    req.send(null)
-  }
-
   let per = document.querySelector("#per_chapter")
   per.addEventListener("change", () => {
     selectContext(per.value)

html/js/ejs.js

@@ -148,7 +148,6 @@ window.addEventListener("load", () => {
   function runCode(data) {
     data.output.clear()
     let val = data.editor.getValue()
-    let sb = data.sandbox
     getSandbox(data.sandbox, data.isHTML, box => {
       if (data.isHTML)
         box.setHTML(val, data.output, () => {
@@ -208,9 +207,9 @@ window.addEventListener("load", () => {
   }
 
   function placeFrame(frame, snippet) {
-    let wrap = snippet.previousSibling
+    let wrap = snippet.previousSibling, bot
     if (!wrap || wrap.className != "editor-wrap") {
-      let bot = snippet.getBoundingClientRect().bottom
+      bot = snippet.getBoundingClientRect().bottom
       activateCode(snippet, null, "text/html")
       wrap = snippet.previousSibling
     } else {

html/js/sandbox.js

@@ -31,7 +31,7 @@
 
         function loaded() {
           frame.removeEventListener("load", loaded)
-          let box = new SandBox(options, frame)
+          let box = new SandBox(frame)
 
           promiseChain((options.loadFiles || []).map(file => () => {
             let script = box.win.document.createElement("script")
@@ -43,7 +43,7 @@
       })
     }
 
-    constructor(options, frame) {
+    constructor(frame) {
       this.startedAt = null
       this.extraSecs = 2
       this.output = null
@@ -387,7 +387,7 @@
     return known || resp.text().then(code => resolved.store(found, {name: found, code}))
   }))
 
-  let Output = SandBox.Output = class {
+  SandBox.Output = class {
     constructor(div) { this.div = div }
 
     clear() {