Description

Most client side google objects in apps script still use callbacks. This wrapper intercepts such calls to directly return promises. It makes common client side google object functions like google.script.run return a promise, instead of a callback function using javascript's internal Proxy/Reflect module.

Installation:

Load the script file directly using your preferred CDN or Github:

<script src="https://cdn.jsdelivr.net/gh/InvincibleRain/appsscriptasync/PromiseProxy.min.js"/>

<script src="https://raw.githubusercontent.com/InvincibleRain/appsScriptAsync/main/PromiseProxy.min.js"/

This script should load after Google scripts are loaded. Once loaded, all calls to google objects are intercepted to only return promises for the following specified function calls:

google.script.run.*
google.script.url.getLocation

All other calls pass through proxy, but routed directly to the original google object.

Example:

<script src="https://raw.githubusercontent.com/InvincibleRain/appsScriptAsync/main/PromiseProxy.min.js"/>
<script>
const doSomeAsyncStuff = async () => {
  const location = await google.script.url.getLocation();
  //getJSON is a server side script 
  //promise
  google.script.run.getJSON(rid).then(returnData => console.log(returnData));
  //async-await
  const returnData = await google.script.run.getJSON();
}
</script>