Foundation is in general a dependency-free base layer for Java projects. Foundation has four layers: 'emulation', 'pure', 'shared', 'jvm'. ⚪️Emulation: Stripped down annotations (jspecify, Jackson). For 2cl-compiler. Java 8 syntax and JRE. ⚪️Pure: No dependencies (except on 'emulation'), only classes from the j2cl compatible fragment. Java 8 syntax. ⚪️Shared: Only j2cl-dependencies allowed (e.g. elements). Java 8 syntax and JRE. ⚪️JVM: This code cannot ...