Enter code notations using the GAS online editor

After creating a new script in the GAS web editor, I decided to include type notations in the .gs file for some reason:

https://i.sstatic.net/LML0G.png

Despite seeing red squiggly lines under the type notation, I noticed that autocomplete was suggesting String methods when using text within helloWorld.

https://i.sstatic.net/JBJoa.png

Although hovering over the squiggled text did not provide any information, clicking the lightbulb next to the line presented me with ts ignore options:

https://i.sstatic.net/Ru49K.gif

Upon attempting to save or run the code, an error message appeared:

Syntax error: SyntaxError: Unexpected token ':' line: 7 file: Code.ts.gs

While aware that typescript can be utilized in local environments for developing GAS’s, the behavior of the web editor suggests there might be additional functionality. Although I searched the documentation, I could not find any relevant information on this particular behavior.

Therefore, my inquiry is: Is this a feature or a bug? If it's a feature, how can typing be integrated into the web editor? It significantly enhances autocompletion for the GAS libraries as well!!

javascripttypescriptgoogle-apps-scripttypesmonaco-editor

Answer №1

When working with Google Apps Script and using JavaScript, keep in mind that this language does not have a built-in way to enforce data types. The features you see in the Google Apps Script web code editor are adapted from the Monaco editor, but some may not be fully functional. To overcome this, consider using JSDoc, specifically the @param tag to specify the data type for each parameter.

For example:

/** 
 * @param {string} text Add some fancy description
 */
function helloWorld(text){
  text.split("").forEach((val, idx) => {
  });
  Logger.log(idx, val);
}

https://i.sstatic.net/xSgUG.png

Please note: JSDoc is supported in Google Apps Script custom libraries as well as Google Sheets custom functions.

Additional Resources

Related Discussion

  • How can I set types for function parameters?

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Conceal all the division elements by referencing their id values

When I pass a value by ID in JavaScript to hide the li element, only the first li is hidden and the second one remains visible. How can I hide all relevant elements? $(function() { $("#0").hide(); }); <script src="https://ajax.googleapis.com/ajax/l ...

javascriptjqueryhtmlcss

Error: Trying to use a class as a function is not allowed

After reviewing all the responses on this particular inquiry: Dealing with "Cannot call a class as a function" error in my React Project I am still grappling with understanding why I keep encountering the 'Cannot call a class as a function' e ...

javascriptreactjsnpmgulpbabeljs

The onbeforeunload event doesn't always appear to be activated

This code snippet illustrates a simple scenario - index.php <?php $count = file_get_contents("count.txt") + 0; file_put_contents("$count.txt [loaded]", ''); file_put_contents("count.txt", $count + 1); ?> <!doctype html> <html ...

phpjavascriptjqueryhtmlonbeforeunload

The function did not return a Promise or value as expected when using async and await

    I have been working on implementing this code structure for my cloud functions using httpRequest. It has worked seamlessly with those httpRequest functions in the past. However, I recently encountered an error when trying to use it with the OnWrite ...

typescriptfirebaseasync-awaitgoogle-cloud-functions

Use JavaScript regex to replace a string only if its length exceeds a certain specified limit

My current approach involves using JavaScript regex to insert an HTML markup for all identified URLs: var exp = /(((|www\.|(http|https|ftp|news|file)+\:\/\/)[&#95;.a-z0-9-]+\.[a-z0-9\/&#95;:@=.+?,##%&~-]*[^.|&bso ...

javascriptjquery

Guide to retrieving data from a URL and storing it in a string variable with JavaScript

Attempting to retrieve the JSON data from a specific URL and store it in a variable. The code snippet below successfully loads the JSON into a div element: $("#siteloader").html('<object data="MYURL">'); However, the goal is to extract t ...

javascriptjqueryajaxjsonp

Guide on adding data from Express.js and Node.js to a database

I'm dealing with a code that involves image uploads and handling input text. I am facing an issue in inserting these values into the mysql database. The problem arises when trying to insert multiple values into the database; however, I can successfull ...

javascriptmysqlnode.jsexpress

Limit the radio button to being clickable

Ugh, I'm really struggling with this. I want to create a quiz where only the radio button is clickable, not the text itself. Can anyone help me figure out how to do this? I have two codes below that I don't quite understand. I'll include th ...

javascriptjqueryhtmljson

The AWS Lambda function in Node.js encountered an internal server error

I've been experimenting with AWS Lambda functions, Axios, and Cheerio in a demo project. However, when I call the endpoint, I receive an error message saying {message: Internal Server Error} exports.lambdaHandler = async (event, context) => { ...

javascriptnode.jsexpressaws-lambdaaws-api-gateway

The OnTextChanged Event of ASP.NET TextBox fails to trigger

I am currently working on implementing a search functionality on the website where a request is sent to the server every time the user enters text, letter by letter. I've attempted to use the OnTextChanged event, but unfortunately, it does not seem to ...

javascriptc#asp.netsearchtextbox

Struggling to pass a function to a stateless functional component in React

I'm currently working on a drum machine project in React as part of my freeCodeCamp tasks. I have successfully rendered the buttons, but I am facing difficulty in making them play the audio files. I've built a stateless functional component that ...

javascripthtmlreactjs

Paste a data point from an Excel spreadsheet into a JavaScript script

I'm encountering a major challenge. Currently, I am creating a login process for a client and here is the approach I have taken: function Jump(pal){ if (pal=='10528'){window.open('http://www.google.es','_parent')} Subs ...

javascripthtmlexcel

Capacitor's push notification feature and websocket support for enhancing chat app functionality

I'm struggling to integrate push notifications with WebSockets effectively. My goal is to display incoming messages as push notifications, similar to how WhatsApp handles chat messages. For detailed guidance on implementing push notifications, check ...

javascriptionic-frameworkpush-notificationcapacitor

The type '{}' is lacking the specified properties within its type definition

Running into trouble with my React Typescript App. I keep encountering this error message and I'm unsure of how to proceed. Error Message: "Type '{}' is missing the following properties from type 'Readonly': isAdmin, usernam ...

reactjstypescriptdatabasereact-typescript

Could anyone provide an explanation for the statement "What does '[P in keyof O]: O[P];' signify?"

As a new Typescript user looking to build a passport strategy, I came across a line of code that has me completely baffled. The snippet is as follows: here. The type StrategyCreated<T, O = T & StrategyCreatedStatic> = { [P in keyof O]: O[P]; ...

typescript

Using webpack without integrating babel can lead to compatibility issues with certain JavaScript

Struggling to create a basic demonstration using webpack and babel, I can't seem to pinpoint the issue. With webpack version 1.13.3 installed, attempting to add npm install --save-dev babel-core babel-preset-es2015 or npm install --save-dev babel-load ...

javascriptnode.jswebpackbabeljs

Modifying Copyright Feature in Footer

I am attempting to implement this function within my dark-colored footer: import Typography from '@material-ui/core/Typography'; function Copyright() { return ( <Typography variant="body2" color="textSecondary" align="center"> ...

javascripthtmlcssreactjsmaterial-ui

"Encountering a Vue error while attempting to register the Can component globally with CASL +

I have successfully created a vue + typescript application using vue-cli. I followed the instructions from https://stalniy.github.io/casl/v4/en/package/casl-vue and added the following code: // main.ts import Vue from 'vue'; import App from &apo ...

typescriptvue.jscasl

Tips for transferring information in JavaScript games

While browsing an HTML-based website, I am able to send POST and GET requests. However, in a JavaScript game like agar.io, how can similar actions be performed? Specifically, when playing a popular game like agar.io, how is my game state (such as positio ...

javascripthtmlpost

utilizing Nuxt code in Elixir/Phoenix

Overview In my previous work, I combined frontend development with nuxt and backend support from elixir/phoenix, along with nginx for reverse proxy. Looking to enhance the performance of the system, my goal is now to migrate everything to Elixir/Phoenix. ...

javascriptelixirphoenix-frameworknuxt.js