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Add SASS support documentation #1007 #1008

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Feb 12, 2017
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Add SASS support documentation #1007 #1008

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812330f
Add SASS support documentation #1007
tsironis Nov 4, 2016
7bac2b9
Change SASS section title to more generic label
tsironis Nov 4, 2016
8654e2f
Fix link in Table of Contents
tsironis Nov 4, 2016
a912a9d
Chain build-css with watch-css script, fix typos
tsironis Nov 6, 2016
412450d
Update Sass and Less naming style
tsironis Nov 10, 2016
c8bc52d
Fix wording, remove offensive words
tsironis Nov 21, 2016
6eae103
Slightly rewite
gaearon Feb 12, 2017
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42 changes: 42 additions & 0 deletions packages/react-scripts/template/README.md
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Expand Up @@ -18,6 +18,7 @@ You can find the most recent version of this guide [here](https://github.com/fac
- [Importing a Component](#importing-a-component)
- [Adding a Stylesheet](#adding-a-stylesheet)
- [Post-Processing CSS](#post-processing-css)
- [Adding SASS Support](#adding-sass-support)
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@davidkpiano davidkpiano Feb 11, 2017 •
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Sass not SASS - it's a backronym.

- [Adding Images and Fonts](#adding-images-and-fonts)
- [Using the `public` Folder](#using-the-public-folder)
- [Adding Bootstrap](#adding-bootstrap)
Expand Down Expand Up @@ -301,6 +302,47 @@ becomes this:

There is currently no support for preprocessors such as Less, or for sharing variables across CSS files.

## Adding SASS Support
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@thien-do thien-do Nov 4, 2016 •
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How about a broader/more general title? As you explained below, SASS is just an example, that your approach can be applied for other things like LESS. So, I think maybe this title is too specific.

How about Adding CSS Preprocessor (SASS, LESS, etc…)

Actually.. this technique can be applied to a much wider situation than just CSS.. technically everything that can be watch.. but the term "CSS Preprocessor" seems easy to understand and popular


CSS preprocessors have become a vital part of build processes. Using a preprocesssor of your choice in a project bootstrapped using create-react-app, is fairly straightforward to setup, even without having to eject.
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CSS preprocessors have become a vital part of build processes.

Let's not sell CSS preprocessors 😉


First, install preprocessor of your choice. SASS seems the most popular weapon of choice at the moment, so we'll use it as an example.

```
npm install node-sass --save-dev
```

Then in `package.json` just add the following lines to `scripts`, replacing file paths accordingly.
```
...
"scripts": {
...
"build-css": "node-sass src/sass/base.scss src/index.css",
"watch-css": "node-sass src/sass/base.scss src/index.css -w",
...
}
...
```

> Using a different preprocessor should be just a matter of replacing `build-css` and `watch-css` scripts to something that matches the preprocessor you're using.
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"should be just" -> "should generally be"

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"To use a different preprocessor, replace..."


Add these scripts to the main scripts, by pasting `npm run watch-css &` to `start` script and `npm run build-css &&` to `build`.
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Does this work on Windows?

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"pasting [...] to" -> "adding [..] before`


```
...
"scripts": {
"start": "npm run watch-css & react-scripts start",
"build": "npm run build-css && react-scripts build",
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I know for sure that a && b won't work on Windows but a&&b will.

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& won't work as intended on windows (it will wait for the watch process to exit before continuing). One possible solution is |. See http://stackoverflow.com/questions/30950032/how-can-i-run-multiple-npm-scripts-in-parallel

"build-css": "node-sass src/sass/base.scss src/index.css",
"watch-css": "node-sass src/sass/base.scss src/index.css -w",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
}
...
```

Finally, you can use `npm start` or `npm run build` as usual.

## Adding Images and Fonts

With Webpack, using static assets like images and fonts works similarly to CSS.
Expand Down