확장 가능한 모듈 기반 애플리케이션을 쉽게 만드는 방법

const user = createContainer({
  id: 'user',
  start: async () => {
    const data = await fetchUser();

    return { api: { data } };
  },
});

const accounts = createContainer({
  id: 'accounts',
  dependsOn: [user],
  start: async ({ user }) => {
    const data = await fetchAccounts({ id: user.data.id });

    return { api: { data } };
  },
  enable: ({ user }) => user.data.id !== null,
});

const wallets = createContainer({
  id: 'wallets',
  dependsOn: [accounts],
  start: () => ({ api: null }),
});

compose.up start

user: 'idle',     accounts: 'idle',     wallets: 'idle'
user: 'pending',  accounts: 'idle',     wallets: 'idle'
user: 'done',     accounts: 'idle',     wallets: 'idle'

# if user.data.id
user: 'done',    accounts: 'pending',  wallets: 'idle'
user: 'done',    accounts: 'done',     wallets: 'pending'
user: 'done',    accounts: 'done',     wallets: 'done'

# else
user: 'done',    accounts: 'off',      wallets: 'off'

compose.up done