wait.js

wait.js

/** 
 *  Wrapper for setTimeout
 *  @param {number} timeDelay Time to wait (ms)
 *  @returns {promise} Empty promise that is resolved after the delay
*/
async function wait(timeDelay){
    return new Promise(
        resolve => setTimeout(
            () => resolve(), timeDelay
        )
    )
}
      
// one line implementation
// const wait = async (timeDelay) => new Promise(resolve => setTimeout(() => resolve(), timeDelay))


// setTimeout() [non-blocking]
function original(){
    setTimeout(() => console.log('original'), 5000)
}


// wait() [blocking]
async function waitBlocking(){
    await wait(5000)
    console.log('demo')
}


// wait() [non-blocking]
function waitNonBlocking(){
    wait(5000)
    .then(() => console.log('demoAlt'))
}


original()
waitBlocking()
waitNonBlocking()