I've installed latest version of Eclipse-IDE (2020-03) with installer option "Eclipse IDE for Web and JavaScript Developers". It is very slow. It takes 2-3 seconds to open a file. And finally following error is shown:
Culprit is actually Eclipse Wild Web Developer. It cannot find my NodeJS install done with Homebrew. To fix, I have executed :
cd /Applications/Eclipse.app/Contents/Eclipse
echo -Dorg.eclipse.wildwebdeveloper.nodeJSLocation=$(which node) >> eclipse.ini