fix(store): fix mapError bug and add type forApiResponseAction

app/store/api.ts

@@ -56,6 +56,18 @@ interface ApiQuery {
  [key: string]: string
 }
 
+interface ApiError {
+ code: number
+ message?: string
+}
+
+export interface ApiResponseAction {
+ type: string
+ payload: {
+ [key: string]: any
+ }
+}
+
 // ApiActionThunk is the return value of an Api action.
 // All api actions must return a promise that will be called with their result:
 // either a SUCCESS or FAILURE action. This allows callers to chain
@@ -98,7 +110,8 @@ async function getJSON<T> (url: string, options: FetchOptions): Promise<T> {
  const r = await fetch(url, options)
  const res = await r.json()
  if (res.meta.code !== 200) {
- throw new Error(mapError(res.meta.error))
+ var err: ApiError = { code: res.meta.code, message: mapError(res.meta.error) }
+ throw err // eslint-disable-line
  }
  return res as T
 }

app/store/mapError.ts

@@ -10,7 +10,7 @@ const errors: {[key: string]: string} = {
 
 export default function mapError (err: string): string {
  var errMessage = err
- if (err.includes('@')) {
+ if (err && err.includes('@')) {
  const start = err.indexOf('@')
  const errSlice = err.slice(start)
  const end = errSlice.indexOf(' ') + start