feat(toJSON): add spec "should expose the property at the JSON.stringify"

Author: 59naga

src/index.js

@@ -32,6 +32,14 @@ export default class Token {
   get meta() {
     return this[META];
   }
+  toJSON() {
+    return {
+      type: this.type,
+      value: this.value,
+      options: this.options,
+      meta: this.meta,
+    };
+  }
 
   /**
   * @method clone

test/index.js

@@ -44,3 +44,8 @@ test('clone is should be changed meta-information only', (t) => {
   t.true(token.meta.transformer === undefined);
   t.true(clonedToken.meta.transformer === 'johndue');
 });
+
+test('should expose the property at the JSON.stringify', (t) => {
+  const string = JSON.stringify(new Token('text', 'foo'));
+  t.true(string === JSON.stringify({ type: 'text', value: 'foo', options: {}, meta: {} }));
+});