1 files changed, 38 insertions, 28 deletions
diff --git a/client/lib/keys.js b/client/lib/keys.js
index c9e51ac..84f8103 100644
--- a/client/lib/keys.js
+++ b/client/lib/keys.js
@@ -1,39 +1,49 @@
-const keys = {}
-const key_numbers = {}
-const letters = "zxcvbnmasdfghjklqwertyuiop"
-const numbers = "1234567890"
+/**
+ * Keyboard helper
+ * @module lib/keys.js;
+ */
 
-let callback = function(){}
+const keys = {};
+const key_numbers = {};
+const letters = "zxcvbnmasdfghjklqwertyuiop";
+const numbers = "1234567890";
 
-letters.toUpperCase().split("").map(function(k,i){
-  keys[k.charCodeAt(0)] = i
-})
+let callback = function () {};
 
-numbers.split("").map(function(k,i){
-  keys[k.charCodeAt(0)] = i+letters.length
-  key_numbers[k.charCodeAt(0)] = true
-})
+letters
+  .toUpperCase()
+  .split("")
+  .map(function (k, i) {
+    keys[k.charCodeAt(0)] = i;
+  });
 
-window.addEventListener("keydown", keydown, true)
-function keydown (e) {
+numbers.split("").map(function (k, i) {
+  keys[k.charCodeAt(0)] = i + letters.length;
+  key_numbers[k.charCodeAt(0)] = true;
+});
+
+window.addEventListener("keydown", keydown, true);
+function keydown(e) {
   if (e.altKey || e.ctrlKey || e.metaKey) {
-    e.stopPropagation()
-    return
+    e.stopPropagation();
+    return;
   }
-  if (document.activeElement instanceof HTMLInputElement &&
-      (e.keyCode in key_numbers)) {
-    e.stopPropagation()
-    return
+  if (
+    document.activeElement instanceof HTMLInputElement &&
+    e.keyCode in key_numbers
+  ) {
+    e.stopPropagation();
+    return;
   }
-  if (! (e.keyCode in keys)) return
-  var index = keys[e.keyCode]
-  if (e.shiftKey) index += letters.length
-  index -= 7
-  callback(index)
+  if (!(e.keyCode in keys)) return;
+  var index = keys[e.keyCode];
+  if (e.shiftKey) index += letters.length;
+  index -= 7;
+  callback(index);
 }
 
-function listen (fn) {
-  callback = fn
+function listen(fn) {
+  callback = fn;
 }
 
-export default { listen }
-\ No newline at end of file
+export default { listen };