What functions are passed to the Promise when awaiting in javascript?

Consider the following code, which awaits a Promise:

async function handleSubmit() {    try {        await submitForm(answer);    } catch (err) {        console.log('Error')    }}function submitForm(answer) {    return new Promise((resolve, reject) => {        setTimeout(() => {            if (answer !== 'OK') {                reject(new Error('Rejected'));            } else {                resolve();            }        }, 1500);    });}

Note that I never explicitly passed resolve/reject to the Promise, yet they are being passed (breakpoint in any JS console to see for yourselves). So my questions are:

1. Who passes the parameters to the Promises' anonymous function? It is the await construct?
2. What exactly gets passed?