Prevent check if method of agent is async (#11)

Co-authored-by: Albert Pérez <albert.perez@immfly.com>

src/utils/reducer/asyncBus/validator/utils/utils.js

@@ -3,13 +3,9 @@ import { METHODS } from '../../static'
 const errorPattern = (method, type) => `The method '${method}' ${type} in the client agent`
 
 export const checkFn = (fn, method) => {
-  if (!fn) {
-    throw new Error(errorPattern(method, 'does not exist'))
-  }
+  if (fn) return
 
-  if (fn() instanceof Promise) return
-
-  throw new Error(errorPattern(method, 'is not an async function'))
+  throw new Error(errorPattern(method, 'does not exist'))
 }
 
 export const checkMethod = (method) => {

src/utils/reducer/asyncBus/validator/utils/utils.spec.js

@@ -29,12 +29,6 @@ test('checkFn - Throw error when fn is not defined', () => {
   }).toThrowError(new Error('The method \'undefined\' does not exist in the client agent'))
 })
 
-test('checkFn - Throw error when fn is not an async method', () => {
-  expect(() => {
-    checkFn(() => {}, '::method::')
-  }).toThrowError(new Error('The method \'::method::\' is not an async function in the client agent'))
-})
-
 test('checkFn - Return undefined when fn is valid', () => {
   const result = checkFn(() => Promise.resolve(), '::method::')
   expect(result).not.toBeDefined()