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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.
Perhaps the most popular Node.js logging library, winston provides a simple API for logging messages to files, consoles, and other destinations. It also includes support for various logging levels, which you can use to control the amount of detail that is logged. Winston defines itself as “A logger for just about everything”.
“Very low overhead Node.js logger” is how pino describes itself. It claims to be 5x faster than alternatives and uses asynchronous logging which it attributes to its speed. Logs messages are buffered and then written in chunks, in comparison to blocking logging where messages are directly written to the output stream.
bunyan argues that logs should be structured and that JSON is a good format for that. It describes itself as a “simple and fast JSON logging library” and has all the features you would expect from a logging library, including serializers and support for different runtime environments including Node.js, Browserify and Webpack.