When I run conda search -c conda-forge nodejs, I get:
conda search -c conda-forge nodejs
# Name Version Build Channel ... nodejs
NodeJS 15.3 successfully installed as of today, with:
conda install -c conda-forge nodejs
On a miniconda 4.9.2, python 3.9 environment.
As detail, the icu==68.1 get installed together.
icu==68.1