Prettier : Prettier is an opinionated code formatter. It enforces a consistent style by parsing your code and re-printing it with its own rules that take the max...
howdoi : Instant coding answers via the command line.
JSHint : This is JSHint, a tool that helps to detect errors and potential problems in your JavaScript code.
Quicktype : Quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and ...
Beautify, unpack or deobfuscate JavaScript and HTML, make JSON/JSONP readable, etc.