-> % sudo npm install -g nrm

added 31 packages in 16s

6 packages are looking for funding
  run `npm fund` for details

-> % nrm
Usage: nrm [options] [command]

npm registry manager can help you switch different npm registries easily and quickly

Options:
  -V, --version                    output the version number
  -h, --help                       display help for command

Commands:
  ls                               List all the registries
  current [options]                Show current registry name or URL
  use [name]                       Change current registry
  add <name> <url> [home]          Add custom registry
  login [options] <name> [base64]  Set authorize information for a custom registry with a base64 encoded string or username and password
  set-hosted-repo <name> <repo>    Set hosted npm repository for a custom registry to publish package
  set-scope <scopeName> <url>      Associating a scope with a registry
  del-scope <scopeName>            Remove a scope
  set [options] <name>             Set a custom registry attribute
  rename <name> <newName>          Change custom registry name
  del [name]                       Delete custom registry
  home <name> [browser]            Open the homepage of registry with optional browser
  test [registry]                  Show response time for specific or all registries
  help [command]                   display help for command

-> % nrm ls
  npm ---------- https://registry.npmjs.org/
  yarn --------- https://registry.yarnpkg.com/
  tencent ------ https://mirrors.tencent.com/npm/
  cnpm --------- https://r.cnpmjs.org/
* taobao ------- https://registry.npmmirror.com/
  npmMirror ---- https://skimdb.npmjs.com/registry/
  huawei ------- https://repo.huaweicloud.com/repository/npm/