test ecdsa support, spaces for whitespace

app/js/app.js

@@ -14,6 +14,32 @@
   var PromiseA = window.Promise;
   var crypto = window.crypto;
 
+  function testEcdsaSupport() {
+    var opts = {
+      type: 'ECDSA'
+    , bitlength: '256'
+    };
+    return BACME.accounts.generateKeypair(opts).then(function (jwk) {
+      return crypto.subtle.importKey(
+        "jwk"
+      , jwk
+      , { name: "ECDSA", namedCurve: "P-256" }
+      , true
+      , ["sign"]
+      ).then(function (privateKey) {
+        return window.crypto.subtle.exportKey("pkcs8", privateKey);
+      });
+    });
+  }
+  testEcdsaSupport().then(function () {
+    console.log("supports ECDSA");
+    BROWSER_SUPPORTS_ECDSA = true;
+  }).catch(function () {
+    console.log("DOES NOT supports ECDSA");
+    BROWSER_SUPPORTS_ECDSA = false;
+  });
+  // TODO test RSA support
+
   var apiUrl = 'https://acme-{{env}}.api.letsencrypt.org/directory';
   function updateApiType() {
     console.log("type updated");