I never used Eclipse so can't speak to that, but compared to VScode, it's got a lot of great built-ins: symbol lookup and searches work well, Typescript support is great, the debugger works well, built-in Gutlens-style version control GUI, a good 3-way diff and merge tool, linters, refactoring tools, etc. Also database browser, diagrammer, multi language support...
Most of that is also available in some form with VScode plug-ins, but I prefer Jetbrains's monolithic approach with batteries included. It's what I want from my IDE (everything out of the box).
And aren't Maven and Gradle build tools, not IDEs? (Sorry for the noob question; JS dev here)