I have 2 functions with loops that I want to execute sequentially:

• Function A executes

• Within Function A there is a For loop triggering an external function

• Once loop in Function A is finished doing its thing, then we start with Function B

I have tried with the following code but function B starts in parallel, doesn't wait for Function A to finish:

async function sendPosts() {
    console.log("start send posts")
    for (let post of posts) {
        ...
  
        await channel.send({
            ...
        }).then((message) => {
            externalFunction(message);
        })
        .catch(err => console.log(err));
    }
    console.log("finish send posts")    
}

async function sendComments() {
    console.log("start send comments")
    for (let comment of commentsData) {
        ... 
    }
    console.log("finish send comments")
}   

sendPosts().then(sendComments());