async.js

const functionA = async () => {
  try {
      // request something that resolves in a promise
  } catch (error) {
    throw new Error("Function A failed");
  }
}

const functionB = async () => {
  try {
      // request something that resolves in a promise
  } catch (error) {
    throw new Error("Function B failed");
  }
}

// child function returns different errors
const mainWrapper = async () => {
  try {
     await functionA();
     await functionB();
  } catch (error) {
    throw error; 
  }
}