/usr/lib/ is in libkf5kjs-dev 5.28.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/cmake/
/usr/lib/x86_64-linux-gnu/cmake/KF5JS/
/usr/lib/x86_64-linux-gnu/cmake/KF5JS/KF5JSConfig.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5JS/KF5JSConfigVersion.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5JS/KF5JSTargets-debian.cmake
/usr/lib/x86_64-linux-gnu/cmake/KF5JS/KF5JSTargets.cmake
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KJS.pri
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/modules/qt_KJSApi.pri
/usr/lib/x86_64-linux-gnu/libKF5JS.so
/usr/lib/x86_64-linux-gnu/libKF5JSApi.so