Disable npm warning during package installation

I get this warning during "npm install -g FooBarModule" on Terminal OSX

npm WARN unmet dependency /usr/local/lib/node_modules/express.io requires express@'~3.4.0' but will load
npm WARN unmet dependency /usr/local/lib/node_modules/express,
npm WARN unmet dependency which is version 4.8.5
npm WARN unmet dependency /usr/local/lib/node_modules/generator-meanjs/node_modules/yeoman-generator requires chalk@'^0.4.0' but will load
npm WARN unmet dependency /usr/local/lib/node_modules/generator-meanjs/node_modules/chalk,
npm WARN unmet dependency which is version 0.5.1
npm WARN unmet dependency /usr/local/lib/node_modules/generator-meanjs/node_modules/yeoman-generator/node_modules/file-utils requires glob@'~3.2.6' but will load
npm WARN unmet dependency /usr/local/lib/node_modules/generator-meanjs/node_modules/yeoman-generator/node_modules/glob,
npm WARN unmet dependency which is version 4.0.5
npm WARN unmet dependency /usr/local/lib/node_modules/meanio/node_modules/bower/node_modules/bower-json requires graceful-fs@'~2.0.0' but will load
npm WARN unmet dependency /usr/local/lib/node_modules/meanio/node_modules/bower/node_modules/graceful-fs,
npm WARN unmet dependency which is version 3.0.2

How avoid it ?

Thanks !