language: node_js
node_js: node
cache:
    directories: 
        - node_modules

language: node_js
node_js: "10.15.3"
before_install: npm i -g npm@6.9.0
install: npm ci
cache:
    directories: 
        - node_modules

Set node to v10.15.3 and force npm to 6.9.0
Set node to v10.15.3 and force npm to 6.9.0
