feat(): provide a meaningful error message even if keycloak-js does not throw one

Author: JoseGoncalves

src/keycloak.test.ts

@@ -57,7 +57,7 @@ describe('keyckoak', () => {
       createKeycloak(keycloakConfig)
       await getToken()
 
-      expect(hasFailed).toBeCalledWith(true, undefined)
+      expect(hasFailed).toBeCalledWith(true, expect.any(Error))
     })
   })
 
@@ -114,7 +114,7 @@ describe('keyckoak', () => {
       expect(hasFailed).toBeCalledTimes(1)
       expect(isPending).toBeCalledTimes(2)
       expect(isPending).toBeCalledWith(false)
-      expect(hasFailed).toBeCalledWith(true, undefined)
+      expect(hasFailed).toBeCalledWith(true, expect.any(Error))
       expect(isAuthenticated).toBeCalledWith(false)
     })
   })

src/keycloak.ts

@@ -7,26 +7,26 @@ export type KeycloakInstance = Keycloak | undefined
 
 let $keycloak: KeycloakInstance = undefined
 
-export async function getToken(minValidity: number = 10): Promise<string> {
-  return updateToken(minValidity)
-}
-
-export async function updateToken(minValidity: number): Promise<string> {
+async function updateToken(minValidity: number): Promise<string> {
   try {
     await $keycloak.updateToken(minValidity)
     setToken($keycloak.token, $keycloak.tokenParsed)
   } catch (err) {
-    hasFailed(true, err)
+    hasFailed(true, isNil(err) ? new Error('Failed to refresh the access token') : err)
   }
   return $keycloak.token
 }
 
+export async function getToken(minValidity: number = 10): Promise<string> {
+  return updateToken(minValidity)
+}
+
 export function createKeycloak(config: KeycloakConfig): Keycloak {
   try {
     $keycloak = new Keycloak(config)
     setKeycloak($keycloak)
   } catch (err) {
-    hasFailed(true, err)
+    hasFailed(true, isNil(err) ? new Error('Failed to create the keycloak adapter') : err)
   }
   return $keycloak
 }
@@ -41,7 +41,7 @@ export async function initKeycloak(initConfig: KeycloakInitOptions): Promise<voi
     }
   } catch (err) {
     isAuthenticated(false)
-    hasFailed(true, err)
+    hasFailed(true, isNil(err) ? new Error('Failed to initialize the keycloak adapter') : err)
   } finally {
     isPending(false)
   }