Generate code verifier and challenge for OAuth2 with PKCE [Using the Twitter API v2 as user with OAuth2 in Google Apps Script]

here’s how you can generate a cryptographically random code verifier, hash it using sha256 & derive it’s base64 encoded challenge in google apps script.

Continuing the crypto theme Sourabh Choraria has been geeking out with Proof Key for Code Exchange (PKCE) OAuth 2.0 authentication flows which be used in the new Twitter API when making requests on behalf of users.

If you are unfamiliar with PKCE, you can find out more in Okta’s description on how to use PKCE to Make Your Apps More Secure. You can follow Sourabh Choraria post to find out more about the Apps Script implementations of this and the good news for Twitter/Apps Script users is the sample is now committed to the Google Workspace OAuth2 Apps Script library samples as

Source: generate code verifier & challenge for OAuth2 with PKCE

Merging Google Sheets from multiple sources and encrypting selected columns – Desktop Liberation

This post introduces a library that can summarize selected columns from multiple sheets across multiple spreadsheets into 1 spreadsheet, as well as to optionally apply a public/private key data encryption scheme to selected columns, all via a simple JSON definition file.

Bruce Mcpherson continues to be one of my favourite Google Apps Script authors and often you get to gain an insight into his development process. This latest post is the latest in a series that follows a post on Super simple cipher library for Apps Script encryption and decryption. The source post shared here continues this journey, in particular, highlighting the use of Google Sheets Developer Metadata to store data bound to the spreadsheet.

Source: Merging sheets from multiple sources and encrypting selected columns – Desktop Liberation

The ULTIMATE Guide to NPM Modules in Google Apps Script

The What and Why of NPM Modules

Google Apps Script has some amazing built-in stuff. It gives us native access to all Google apps like Sheets and Gmail, seamlessly integrates with GCP services like BigQuery, allows for the building of interfaces with HTML and CardService, facilitates the creation of simple webhooks/APIs and web apps with simple and efficient client-server communication, can make use of any API through  UrlFetchApp , and can be bundled into add-ons for efficient distribution. In my experience, it’s enough for 99% of all Google Apps Script developers.

However, one thing that Google Apps Script is missing is modules. NPM has an extremely impressive database of JavaScript modules that don’t automatically integrate with Apps Script. Of course, in Apps Script we have libraries, but the selection is extremely limited and there is no marketplace for those. By the way, who wants to participate in creating one? Let me know in the comments! However, the very first warning on the libraries documentation page notes that libraries make Apps Script slow. Well, Apps Script is already far from being the fastest programming language on Earth, so slowing it down further is not an idea that I’m a fan of!

But what if I told you that there actually is a way to use some NPM modules in Apps Script? You just need to bundle them with Webpack. Not sure what I mean? Keep reading.

Source: The ULTIMATE Guide to NPM Modules in Google Apps Script.

How to management deployments to Google App Script from clasp with a Github Action

This repository is an example of how to setup an automatic CI/CD process for Google Apps Script using GitHub Actions.

This solution come via Dimitri S on Twitter and provides a way to setup a continuous development workflow for Google Apps Script using clasp and Github. The basic recipe appears to be is you develop your code locally using your preferred IDE. You then use clasp to push your code to GitHub, which triggers a GitHub Action to deploy your code to

Source: GitHub – ericanastas/deploy-google-app-script-action

Using community connectors to go beyond filter by email in Data Studio –

This article discusses row-level security in Google Data Studio and shows how community connectors can be used to overcome the limitations of the native feature when accessing data stored in Google Sheets.

I don’t think one of our summaries could ever do justice to this contribution from Pablo Felip. The post has a very thorough summary of row-level security and how Community Connectors coded in Apps Script can be used for additional levels of functionality.

Source: Using community connectors to go beyond filter by email in Data Studio –

An easy way to deal with Google Apps Script’s 6-minute limit

Image credit: Inclu Cat

Google Apps Script is handy, and it will help you a lot in your work. However, as you use it, you may hit a big wall. That is the six-minute limit on execution time. As the official documentation states, the maximum allowed time per execution of Google Apps Script is 6 minutes.

If the script execution time reaches 6 minutes, the script will stop suddenly, and an error message “Exceeded maximum execution time” will be displayed.

For as long as Google Apps Script has been around there have been various solutions published for handling the 6 minute execution limit. This post from Inclu Cat presents a nice overview and solution for the execution limit.

This is also an issue also recently covered by Amit Agarwal who takes a slightly different approach in Exceeded maximum execution time Exception in Google Apps Script, by breaking the execution before the limit is reached.

Source: An easy way to deal with Google Apps Script’s 6-minute limit

A library SDK for APIs in Google Apps Scripts … think of it as the Advanced Services with batch Superpowers

More technically, this library can be used to send http requests via UrlFetchApp.fetch or UrlFetchApp.fetchAll , interacting with api endpoints in raw form. By bringing it down to a lowest layer on this platform, you get the following benefits:

  • All of the options, features, and abilities that are available. No compromises.
  • Ability to batch the requests in bulk. Performance can be significantly improved and run times lowered.

If you’re looking for a way to duck under the 6 minute limit to your scripts, the last bullet point should be particularly interesting.

This library comes from Adam Morris and is well worth exploring the source link to discover more about this solution. If you are particularly interested in how to use this library with Google Services it’s worth checking out the section on Notes on createGoogEndpoint and if you are interested here is a Google Sheet of current Google Endpoint names and versions (created with Spencer Easton’s Google APIs Library script)

eMayordomo – Monitoring Gmail and conditional responses with Google Apps Script

Este artículo presenta eMayordomo, un desarrollo GAS capaz de vigilar un buzón de Gmail y responder automáticamente y de manera condicionada a los correos electrónicos procedentes de diversos formularios web, enviando mensajes preparados de antemano. Estas respuestas preparadas soportan HTML, imágenes en línea, archivos adjuntos y emojis.

Google Translate: This article presents eMayordomo , a GAS development capable of monitoring a Gmail mailbox and responding automatically and in a conditional manner to emails from various web forms, sending messages prepared in advance. These prepared responses support HTML, inline images, attachments, and emojis

For non-Spanish speakers you’ll have to hit Google Translate but it is well worth it for the very thorough documentation Pablo Felip has prepared, which includes the source blog post and GitHub repository. The repository is particularly useful to look at as Pablo has taken the time to document and explain the various Google Apps Script functions he has developed, methods used and potential issues/limitations when interacting with a Gmail inbox.

Source: Respuestas automáticas a formularios web con eMayordomo

Simple and maintainable error-handling in TypeScript

Sometimes things fail — that’s a fact of life and programming. So as a programmer, you’re going to have to write error-handling code. Thankfully TypeScript has some handy features which can help us to create simple and maintainable error-handling code.

James Elderfield recently joined us on Totally Unscripted to share some insights into the infrastructure used at Supermetrics used to support the development of their Google Sheets Add-on and Data Studio Connector. As part of their stack James highlighted how they used TypeScript to write code complied to use in Google Apps Script. This post isn’t Apps Script specific but provides some useful tips on using TypeScript for error handling.

Source: Simple and maintainable error-handling in TypeScript

Github as an Apps Script cache platform – Desktop Liberation

Use Github as a back end for caching large objects across platforms. It’s possible to use a github repo as the back end for a caching service, and by taking this approach we can share data between Apps script and multiple platforms. It also means you can retrieve the data with the git CLI in addition. It works in exactly the same way as all the other backends. … Using a regular git Repo means you can make it private and share it using the tools already built into Github.

Source: Github as an Apps Script cache platform – Desktop Liberation

Creating a Google Chatbot connected to SAP Graph API

You know that idea you always keep at the bottom of your backlog for that elusive day you’ll find enough time to address? For me, it’s the possibility to connect a chatbot to an SAP system.

Julien Delvat shares how you can connect the SAP Graph API to Google Chat with Google Apps Script. The post provides details of the entire development and deployment process with useful tips on how you can extend the project.

Source: Creating a Google Chatbot connected to SAP Graph API

Analyze your friends Peloton workout stats with real-time updates (using Google Apps Script)

A tutorial on how you can sync and analyze your Peloton workout stats into Coda with custom dashboards. Sync with a Google Apps Script or serverless function on Google Cloud.

We’ve featured this example from Al Chen on interacting with Peleton data with Google Apps Script before. Al has recently updated the post to include a “new table ‘Friend Workouts’ contains latest 10 cycling workouts from people you follow”. Follow the source link for more details…

Source: Analyze your Peloton workout stats with real-time updates

Modern Angular in Google Workspace Editor Add-ons

I intend this post for established Add-on developers who want to use Angular in Google Workspace editor Add-ons and Google Apps Script webapps. This does not attempt to show how to create Add-ons or Angular apps, but the tooling and build process to use Angular apps in Add-ons. I am also assuming familiarity with installing and using CLI tools in your development workflow.

We recently had the author of this post, Spencer Easton, on an episode of Totally Unscripted to talk about this topic. This companion post provides an overview of using Angular for Add-on development. There is a cost associated with this solution has separate hosting is required for the Webpacks, but as covered by Spencer the cost is low (for a 100K+ users add-on the cost is $8/month).

Source: Modern Angular in Google Workspace Editor Add-ons

Maintain Google Apps Script in an Enterprise environment – Google Apps Script deployment with Cloud Build

In this article I will showcase the way I deploy Google Apps Script code in an Enterprise environment. I will share the actual build file and the necessary steps and tools to reproduce my workflow. This approach does require Google Cloud Platform knowledge and a credit card. The instructions are high level, this article is not a codelab.

For those interested in scaling up their Google Apps Script development Jasper Duizendstra outlines how you can use Google Cloud Build for version control and Continuous Deployment (CD). As Jasper notes:

When the CD pipeline is in place it becomes easy to deploy the script, separate the responsibilities and support multiple versions and implementations of the code … the most important advantage of using CD is the mindset that it enables. It provides an environment where I feel confident and safe to create small incremental changes in my applications.

Source: Google Apps Script deployment with Cloud Build

Use Google Cloud AI to find the right answers from the Calendar TV contest

I have programmed an application that searches for (or rather knows) the correct answers to the competition questions from the Kalendárium program, all using Google Cloud AI. I decided to write the entire application in Google Apps Script technology, which offers an online IDE editor, application operation in the cloud and the possibility of a quick connection to Google services. [auto-translated]

You’re going to have to hit Google Translate to read this post from Ivan Kutil, but it’s worth it is a nice example of how Google Apps Script can be used for orchestration. All the details are in the post and it’s also a nice reminder of the Parser library Ivan released in 2016, which makes it easy to scrape data from websites using UrlFetchApp (read more about the web scraping).

Source: Využití Google Cloud AI pro hledání správných odpovědí z televizní soutěže Kalendárium