Override modules

This article demonstrates three different methods of overriding npm packages in the client and/or server.

  1. Local checkout
  2. Git submodules
  3. Linking

Local checkout

The first option is to override the modules from within your installation/distribution.

[info] Note that you don't have to use git in this case. You can also download and extract an archived version.

# Then inside the OS.js root directory
git clone https://github.com/os-js/osjs-client src/osjs-client
cd src/osjs-client
npm install
npm run build

# Then back inside the OS.js root directory
npm install --save file:src/osjs-client
npm run build

Git submodules

Same as above, except that the overrided modules are kept in separate repositories using Git submodules.

# In your OS.js root directory, set up the submodule
git submodule add https://github.com/os-js/osjs-client src/osjs-client
cd src/osjs-client
npm install
npm run build

# Then back inside the OS.js root directory
npm install --save file:src/osjs-client
npm run build

Linking

With the npm link feature you override the paths inside node_modules/ by linking them from anywhere on your filesystem.

Workflow is similar to local checkout or Git submodules, except that package.json does not reference local packages.

Useful when maintaining a large set of overrided packages in a monorepo.

[warning] It is highly recommended that you either manage your node installation with nvm or modify you npm setup to prevent permission errors when using the npm link feature.

[info] Note that you don't have to use git in this case. You can also download and extract an archived version.

This comes with a few gotchas:

  1. Using npm link will not deep-link dependencies
  2. Running npm install after linking will reset the links to the original npmjs sources
  3. Tools like lerna solves the issues above for you.
# In any location or from within your monorepo (ex `packages/`)
git clone https://github.com/os-js/osjs-client
cd osjs-client
npm install
npm run build
npm link

# Then back inside the OS.js root directory
npm link @osjs/client
npm run build
OS.js Web Desktop - © Anders Evenrud <andersevenrud@gmail.com>

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