Class Monitor<T>

A monitor can be used to check periodically for a certain situation, e.g. confirmation of a transaction, activation on an account, or even something completely different.

Example: (checking for the existence of an account aka account activation)

// A method that checks if an account exists
// > IMPORTANT: Do not use closures, when you need to serialize the monitor
async function tryFetchAccount() {
   const Api = composeApi({ nodeHost: 'https://testnet.signum.network:6876/'})
   try{
       const {account} = await Api.account.getAccount('1234')
       return account;
   }catch (e){
       // ignore error
       return null;
   }
}

// A comparing function to check if a certain condition for the returned data from fetch function
// is true. If it's true the monitor stops
function checkIfAccountExists(account) {
   return account !== null;
}

// Create your monitor
const monitor = new Monitor<Account>({
   asyncFetcherFn: tryFetchAccount,
   compareFn: checkIfAccountExists,
   intervalSecs: 10, // polling interval in seconds
   key: 'monitor-account',
   timeoutSecs: 2 * 240 // when reached timeout the monitor stops
})
.onFulfilled(() => {
   // called when `checkIfAccountExists` returns true
   console.log('Yay, account active');
})
.onTimeout(() => {
   // called when `timeoutSecs` is reached
   console.log('Hmm, something went wrong');
}).start();