How to use the command 'nrm' (with examples)

The ’nrm’ command is short for “npm registry manager” and it allows users to easily switch between different npm registries. It can be used to list all available registries, change to a specific registry, show response time for each registry, add a custom registry, and delete a registry.

Use case 1: List all registries

Code:

nrm ls

Motivation: The ’nrm ls’ command is used to list all the available npm registries. This can be helpful when you want to see the available options and compare their features or performance.

Explanation:

• ’nrm’ is the command itself.
• ’ls’ is the argument to the command, which stands for “list”.

Example output:

* npm ---- https://registry.npmjs.org/
  cnpm --- http://r.cnpmjs.org/
  taobao - https://registry.npm.taobao.org/

Use case 2: Change to a particular registry

Code:

nrm use registry

Motivation: The ’nrm use’ command is used to switch to a specific npm registry. This is useful when you want to use a different registry than the default one for installing or publishing packages.

Explanation:

• ’nrm’ is the command itself.
• ‘use’ is the argument to the command, indicating that we want to switch to a particular registry.
• ‘registry’ is the name of the registry we want to use.

Example output:

    Registry has been set to: registry

Use case 3: Show the response time for all registries

Code:

nrm test

Motivation: The ’nrm test’ command allows users to check the response time for each registered npm registry. This can be useful when you want to see the performance of each registry and choose the one with the best response time.

Explanation:

• ’nrm’ is the command itself.
• ’test’ is the argument to the command, indicating that we want to test the response time.

Example output:

* npm ---- 415ms
  cnpm --- 303ms
  taobao - 380ms

Use case 4: Add a custom registry

Code:

nrm add registry url

Motivation: The ’nrm add’ command allows users to add a custom registry to the list of available options. This can be helpful when you want to use a registry that is not included by default.

Explanation:

• ’nrm’ is the command itself.
• ‘add’ is the argument to the command, indicating that we want to add a new registry.
• ‘registry’ is the name of the custom registry we want to add.
• ‘url’ is the URL of the custom registry.

Example output:

    add registry succeeded https://my-registry.com/

Use case 5: Delete a registry

Code:

nrm del registry

Motivation: The ’nrm del’ command allows users to delete a registry from the list of available options. This can be useful when you no longer need a specific registry and want to remove it from the list.

Explanation:

• ’nrm’ is the command itself.
• ‘del’ is the argument to the command, indicating that we want to delete a registry.
• ‘registry’ is the name of the registry we want to delete.

Example output:

    delete registry succeeded registry

Conclusion:

The ’nrm’ command is a useful tool for managing npm registries. By using this command, users can easily switch between different registries, test their response times, and even add or delete custom registries. This flexibility allows developers to optimize their package management experience and choose the registry that best suits their needs.