feat: add getOptions method (resolves: #215)

src/client/$meta.js

@@ -12,6 +12,7 @@ export default function _$meta(options = {}) {
    */
   return function $meta() {
     return {
+      getOptions: () => Object.freeze({ ...options }),
       refresh: _refresh.bind(this),
       inject,
       pause: pause.bind(this),

src/server/$meta.js

@@ -13,6 +13,7 @@ export default function _$meta(options = {}) {
    */
   return function $meta() {
     return {
+      getOptions: () => Object.freeze({ ...options }),
       refresh: _refresh.bind(this),
       inject: _inject.bind(this),
       pause: pause.bind(this),

test/plugin-browser.test.js

@@ -20,9 +20,14 @@ describe('plugin', () => {
 
     expect(instance.$meta().inject).toEqual(expect.any(Function))
     expect(instance.$meta().refresh).toEqual(expect.any(Function))
+    expect(instance.$meta().getOptions).toEqual(expect.any(Function))
 
     expect(instance.$meta().inject()).toBeUndefined()
     expect(instance.$meta().refresh()).toBeDefined()
+
+    const options = instance.$meta().getOptions()
+    expect(options).toBeDefined()
+    expect(options.keyName).toBe(defaultOptions.keyName)
   })
 
   test('component has _hasMetaInfo set to true', () => {