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Using with async function

Use with global configured object

In the previous section, we have created a globally configured object. Now, we will use that configured object with our async function.

Creating an async function​

Consider you have an async function that runs after 500 ms, takes in a param as number, and throws an error if that param is equal to 3. Otherwise, it follows the success case:

helper.js
export async function asynFunc(param) {
  return new Promise((res, rej) => {
    setTimeout(() => {
      if (param === 3) return rej("ERROR!!");
      res(param);
    }, 500);
  });
}

Wrap with wrapper​

Now, we will wrap the above asyncFunction with our custom wrapper.

index.js
import { asyncWrapper } from "./config/wrappers";
import { asynFunc } from "./helper";

async function main() {
  const result = await asyncWrapper.execute(asynFunc, 1);
}

main();

.execute​

The prototype for this function is:

.execute(func: (param: T) => Promise<void>, param: T)

func is refered to as an async function that takes a single param. param refers to the object with multiple key-value pairs as input to func.

Single param

With the current provided support, an async function is required to take in a single param. That param can have multiple key-value pairs. e.g. fetchUrl(domain, path) should be converted to fetchUrl({domain, path})