ni: add page (#21957)

Co-authored-by: Ivan Baluta <ivanbaluta.dev@gmail.com>

pages/common/ni.md

@@ -0,0 +1,38 @@
+# ni
+
+> Use the right package manager (npm, yarn, pnpm, bun, or deno) automatically.
+> Detect the current project's lockfile to run the corresponding commands.
+> Note: In PowerShell, `ni` is a built-in alias for `New-Item`. To use this tool, the alias must be removed.
+> More information: <https://github.com/antfu-collective/ni>.
+
+- Install all dependencies (equivalent to `npm install`, `yarn install`, etc.):
+
+`ni`
+
+- Install a specific package (-D for dev dependencies):
+
+`ni {{package}}`
+
+- Run a `package.json` script (interactively select if no script is provided):
+
+`nr {{script}}`
+
+- Download and execute a command from a package (equivalent to `npx`, `pnpm dlx`, etc.):
+
+`nlx {{package}}`
+
+- Upgrade dependencies:
+
+`nup`
+
+- Uninstall a package:
+
+`nun {{package}}`
+
+- Clean install dependencies (equivalent to `npm ci`, etc.):
+
+`nci`
+
+- Use the current package manager agent directly for arbitrary commands:
+
+`na {{command}}`