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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
To use the lint and fix commands, copy the other files from the example directory on Github.
Functions can be executed via a database query or on a regular schedule. Trigger functions are a special type of function that are covered in a previous article. They provide a way to execute an action based on a database event.
The plv8ts package also shows how to use the Jasmine testing framework to test your functions before installing them in Postgres. You can mock out the PLV8 functions and test the results of your code. Check out the example for more details.