$ npminstall
gyp ERR!find Python
gyp ERR!find Python Python is not set from command line or npm configuration
gyp ERR!find Python Python is not set from environment variable PYTHON
gyp ERR!find Python checking if"python" can be used
gyp ERR!find Python - executable path is "/Users/yoo/.pyenv/versions/3.7.1/bin/python"
gyp ERR!find Python - version is "3.7.1"
gyp ERR!find Python - version is 3.7.1 - should be >=2.6.0 <3.0.0
gyp ERR!find Python - THIS VERSION OF PYTHON IS NOT SUPPORTED