refactor(kitsu): self - move params and headers into a config object

Author: wopian

packages/kitsu/src/index.js

@@ -360,10 +360,9 @@ export default class Kitsu {
    * **Note** Requires the JSON:API server to support `filter[self]=true`
    *
    * @memberof Kitsu
-   * @param {Object} [params] JSON-API request queries
-   * @param {Object} [params.fields] Return a sparse fieldset with only the included attributes/relationships - [JSON:API Sparse Fieldsets](http://jsonapi.org/format/#fetching-sparse-fieldsets)
-   * @param {string} [params.include] Include relationship data - [JSON:API Includes](http://jsonapi.org/format/#fetching-includes)
-   * @param {Object} [headers] Additional headers to send with the request
+   * @param {Object} [config] Additional configuration
+   * @param {Object} [config.params] JSON:API request queries. See [#get](#get) for documentation
+   * @param {Object} [config.headers] Additional headers to send with the request
    * @returns {Object} JSON-parsed response
    * @example <caption>Get the authenticated user's resource</caption>
    * api.self()
@@ -374,9 +373,11 @@ export default class Kitsu {
    *   }
    * })
    */
-  async self (params = {}, headers = {}) {
+  async self (config = {}) {
     try {
-      const res = await this.get('users', Object.assign({ filter: { self: true } }, params), headers)
+      const headers = merge(this.headers, config.headers)
+      const params = merge(config.params, { filter: { self: true } })
+      const res = await this.get('users', merge({ headers }, { params }))
       return res.data[0]
     } catch (E) {
       throw error(E)

packages/kitsu/src/self.spec.js

@@ -25,7 +25,7 @@ describe('kitsu', () => {
         })
         return [ 200, { data: [] } ]
       })
-      api.self(undefined, { extra: true }).catch(err => {
+      api.self({ headers: { extra: true } }).catch(err => {
         done.fail(err)
       })
       done()
@@ -55,7 +55,7 @@ describe('kitsu', () => {
       const api = new Kitsu()
       mock.onGet('/users', { filter: { self: true }, include: 'author' }).reply(400, getError.jsonapi)
       try {
-        await api.self({ include: 'author' })
+        await api.self({ params: { include: 'author' } })
       } catch ({ errors }) {
         expect(errors).toHaveLength(1)
         expect(errors[0].title).toBe('Invalid field')