fix: Quoted – clone throw an error (#141)

lib/nodes/Quoted.js

@@ -18,8 +18,13 @@ class Quoted extends Node {
   constructor(options) {
     super(options);
     this.type = 'quoted';
-    this.contents = unquote(options.value);
-    [this.quote] = options.value;
+    /**
+     * When cloning the node via {@link Node.clone()} there are no constructor params
+     */
+    if (options && options.value) {
+      this.contents = unquote(options.value);
+      [this.quote] = options.value;
+    }
   }
 
   static fromTokens(tokens, parser) {

test/quoted.test.js

@@ -0,0 +1,57 @@
+/*
+  Copyright © 2018 Andrew Powell
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+  The above copyright notice and this permission notice shall be
+  included in all copies or substantial portions of this Source Code Form.
+*/
+const test = require('ava');
+
+const { nodeToString, parse } = require('../lib');
+
+const { snapshot, throws } = require('./fixtures/quoted');
+
+for (const fixture of snapshot) {
+  test(fixture, (t) => {
+    const root = parse(fixture);
+    const nodes = root.nodes.map((node) => {
+      delete node.parent; // eslint-disable-line no-param-reassign
+      return node;
+    });
+    const string = nodeToString(root);
+
+    t.is(string, fixture);
+    t.is(fixture, root.toString());
+    t.snapshot(root.first.toString());
+    t.snapshot(string);
+    t.snapshot(nodes);
+
+    root.clone();
+  });
+
+  test(`${fixture} be should cloned`, (t) => {
+    const root = parse(fixture);
+    const nodes = root.nodes.map((node) => {
+      delete node.parent; // eslint-disable-line no-param-reassign
+      return node;
+    });
+    const string = nodeToString(root);
+
+    const cloned = root.clone();
+
+    t.is(string, fixture);
+    t.is(fixture, root.toString());
+    t.snapshot(cloned.first.toString());
+    t.snapshot(string);
+    t.snapshot(nodes);
+  });
+}
+
+for (const fixture of throws) {
+  test(fixture, (t) => {
+    t.throws(() => parse(fixture));
+  });
+}