How do I update devDependencies in NPM?

Question

`npm update` seems to just update the packages in `dependencies`, but what about `devDependencies`. Right now you can install `devDependencies` by running `npm install .`, but this doesn't work for `npm update .` Any ideas?

Accepted Answer

To update package.json in addition to the local modules, run

```
npm update --save-dev
```

Alternatively, the same command to save time

```
npm update -D
```

You can view the full detail of update, or any command for that matter through

```
npm help <cmd>
```

How do I update devDependencies in NPM?

Solution

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