eslint + prettier

.editorconfig

@@ -0,0 +1,11 @@
+# editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true

.eslintrc.json

@@ -0,0 +1,23 @@
+{
+    "env": {
+        "browser": true,
+        "commonjs": true,
+        "es6": true,
+        "node": true
+    },
+    "parserOptions": {
+        "ecmaFeatures": {
+            "jsx": true
+        },
+        "sourceType": "module"
+    },
+    "rules": {
+        "no-const-assign": "warn",
+        "no-this-before-super": "warn",
+        "no-undef": "warn",
+        "no-unreachable": "warn",
+        "no-unused-vars": "warn",
+        "constructor-super": "warn",
+        "valid-typeof": "warn"
+    }
+}

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "printWidth": 120,
+  "trailingComma": "es5"
+}

README.md

@@ -2,7 +2,9 @@
 
 See the live demo at https://js-keygen.surge.sh
 
-There is no way to generate a ssh keypair on the chrome book, but we have access to chrome and the webcrypto API. I had to do all sorts of gymnastics to convert the generated keypair to something that can be consummed by SSH.
+For some explanation see http://blog.roumanoff.com/2015/09/using-webcrypto-api-to-generate-keypair.html
+
+There is no way to generate a ssh keypair on a chromebook, but we have access to chrome and the webcrypto API. I had to do all sorts of gymnastics to convert the generated keypair to something that can be consummed by SSH.
 
 * I had to learn about the WebCrypto API - which was the initial goal
 * I had to learn about JWK

base64url.js

@@ -1,4 +1,3 @@
-/*jslint browser: true, sloppy: true */
 //adapted from https://tools.ietf.org/html/draft-ietf-jose-json-web-signature-08#appendix-C
 
 function base64urlEncode(arg) {
@@ -24,5 +23,7 @@ function base64urlDecode(s) {
     default:
       throw "Illegal base64url string!";
   }
-  return window.atob(s); // Standard base64 decoder
+  return window.atob(s); // Regular base64 decoder
 }
+
+module.exports = { base64urlDecode, base64urlEncode };

js-keygen-ui.js

@@ -1,5 +1,4 @@
-/*jslint browser: true, sloppy: true, vars: true, indent: 2*/
-var console, generateKeyPair;
+var generateKeyPair;
 
 function copy(id) {
   return function() {
@@ -22,17 +21,17 @@ function buildHref(data) {
   return "data:application/octet-stream;charset=utf-8;base64," + window.btoa(data);
 }
 
-document.addEventListener("DOMContentLoaded", function(event) {
-  document.querySelector("#savePrivate").addEventListener("click", function(event) {
+document.addEventListener("DOMContentLoaded", function() {
+  document.querySelector("#savePrivate").addEventListener("click", function() {
     document.querySelector("a#private").click();
   });
   document.querySelector("#copyPrivate").addEventListener("click", copy("#privateKey"));
-  document.querySelector("#savePublic").addEventListener("click", function(event) {
+  document.querySelector("#savePublic").addEventListener("click", function() {
     document.querySelector("a#public").click();
   });
   document.querySelector("#copyPublic").addEventListener("click", copy("#publicKey"));
 
-  document.querySelector("#generate").addEventListener("click", function(event) {
+  document.querySelector("#generate").addEventListener("click", function() {
     var name = document.querySelector("#name").value || "name";
     document.querySelector("a#private").setAttribute("download", name + "_rsa");
     document.querySelector("a#public").setAttribute("download", name + "_rsa.pub");

js-keygen.js

@@ -1,5 +1,3 @@
-/*jslint browser: true, devel: true, sloppy: true, vars: true*/
-/*globals Uint8Array, Promise */
 var extractable = true;
 var encodePrivateKey, encodePublicKey;
 
@@ -54,3 +52,5 @@ function generateKeyPair(alg, size, name) {
       return Promise.all([privateKey, publicKey]);
     });
 }
+
+module.exportKey = { arrayBufferToBase64, generateKeyPair };

package.json

@@ -4,7 +4,12 @@
   "description": "Generate a key pair using the webcrypto API",
   "main": "js-keygen.js",
   "dependencies": {},
-  "devDependencies": {},
+  "devDependencies": {
+    "eslint": "4.17.0",
+    "eslint-config-airbnb-base": "^12.1.0",
+    "eslint-config-prettier": "^2.9.0",
+    "eslint-plugin-import": "^2.8.0"
+  },
   "scripts": {
     "test": "echo \"To run test open test/index.html in your browser\""
   },

ssh-util.js

@@ -1,5 +1,3 @@
-/*jslint browser: true, devel: true, bitwise: true, sloppy: true, vars: true*/
-
 var base64urlDecode;
 
 function arrayToString(a) {
@@ -127,3 +125,5 @@ function encodePrivateKey(jwk) {
   var a = [0x30].concat(len, seq); // seq is 0x30
   return arrayToPem(a);
 }
+
+module.exports = { base64urlToArray, decodePublicKey, encodePublicKey, encodePrivateKey };