Reacting to a store change outside the context of a root or render function

I have a user store to manage user token etc. global-store.ts

export const [userStore, setUserStore] = makePersisted(
  createStore<UserStoreState>({
    user: null,
    tokens: null,
    accessToken: '',
  }),
  { name: 'linkerly-user-store', storageOptions: { type: 'localStorage' } },
);

export const [userStore, setUserStore] = makePersisted(
  createStore<UserStoreState>({
    user: null,
    tokens: null,
    accessToken: '',
  }),
  { name: 'linkerly-user-store', storageOptions: { type: 'localStorage' } },
);

I'm also experimenting with the library called wretch. linkerly-api.ts

const getAccessToken = () => {
  return userStore.accessToken;
};

export const linkerlyApi = wretch(API_URI)
  .headers({ 'Content-Type': 'application/json' })
  .auth(`Bearer ${getAccessToken() ?? 'no'}`)

const getAccessToken = () => {
  return userStore.accessToken;
};

export const linkerlyApi = wretch(API_URI)
  .headers({ 'Content-Type': 'application/json' })
  .auth(`Bearer ${getAccessToken() ?? 'no'}`)

After a successful login I am setting the user store.

setUserStore(
        produce((draft) => {
          draft.user = loginResponse.user;
          draft.tokens = loginResponse.tokens;
          draft.accessToken = loginResponse.tokens.accessToken;
        }),
      );

setUserStore(
        produce((draft) => {
          draft.user = loginResponse.user;
          draft.tokens = loginResponse.tokens;
          draft.accessToken = loginResponse.tokens.accessToken;
        }),
      );

The question is if I don't wrap the

userStore.accessToken

userStore.accessToken

in a createEffect it's not reactive and auth token doesn't get injected into the http client. If I wrap it I am getting 'computations created outside a createRoot or render will never be disposed'. Felt like I am doing something that's not supposed to do or recomennded and there should be a better way to do all of these. Any idea?

1 Reply

bigmistqke•9mo ago

Since components only run once you will need effects to react on signal changes. U can think of JSX as being an effect too, so any signal accessed in JSX will be reactive too. Is the effect outside a component? If yes, you could look at createRoot. The warning is about the fact that when u use effects inside components it will automatically dispose when the component gets unmounted, if u use effects outside components u will have to manage that yourself.

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Reacting to a store change outside the context of a root or render function