Add Execute A Command From The Workspace Root as a pnpm TIL

pnpm/execute-a-command-from-the-workspace-root.md

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+# Execute A Command From The Workspace Root
+
+[`pnpm`](https://pnpm.io/) is designed to work with monorepos. In a monorepo
+project you'll have a root `package.json` (in the top-level directory of the
+repository) as well as individual `package.json` files per app and package. If
+you're working from within the directory of one of your apps and you invoke a
+command, `pnpm` should execute that command for this app. The `pnpm` CLI does
+give you control to execute the command from the workspace root instead if
+you'd like.
+
+A likely setup is that both your root `package.json` and your individual app
+`package.json` files have a `build` command.
+
+Invoking the build command from `apps/my-app`:
+
+```bash
+pnpm build
+```
+
+will run the `my-app` build command, as specified in its `package.json`.
+
+You could instead throw in [the `--workspace-root`
+flag](https://pnpm.io/pnpm-cli#-w---workspace-root).
+
+```bash
+pnpm --workspace-root build
+```
+
+This will ignore whatever subdirectory you are in and invoke the `build`
+command defined in your top-level `package.json` file.