NPM Registries

For Enterprise / Custom Registries, you can set these up globally, or in an .npmrc in the root directory of you project.

.npmrc

registry=https://my/registry/url/.com/what/ever/
strict-ssl=false

You can have multiple registries: (Stack Overflow - Config Multiple registries)[https://stackoverflow.com/questions/32633678/is-there-any-way-to-configure-multiple-registries-in-a-single-npmrc-file]

For scoped packages, you can have specific registries:

In your .npmrc:

@polymer:registry=<url register A>
registry=http://localhost:4873/

Local NPM

Offline first NPM!

To cache, store and serve NPM packages that you have previously installed:

npm install -g local-npm

Then, run the local server

local-npm

Set up a ‘local’ npm config with npmrc

# install npmrc
npm install -g npmrc
# Create a default npmrc

# Create a local npmrc
npmrc -c local

# set the registry of the local to point to the local-npm server
npm set registry http://127.0.0.1:5080

# to switch back to your default npmrc
npmrc default