  We propose a realization of Kondo-lattice physics in moir\'e superlattices at
the interface between a WX$_2$ homobilayer and MoX$_2$ monolayer (where
X=S,Se). Under appropriate gating conditions, the interface-WX$_2$-layer forms
a triangular lattice of local moments that couple to itinerant electrons in the
other WX$_2$-layer via a gate-tunable Kondo exchange interaction. Using a
parton mean-field approach we identify a range of twist-angles which support a
gate-tuned quantum phase transition between a heavy-fermion liquid with large
anomalous Hall conductance and a fractionalized chiral spin-liquid coexisting
with a light Fermi liquid, and describe experimental signatures to distinguish
among competing theoretical scenarios.
