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https://github.com/danmad/node-sass-token-importer
A module that extends node-sass by supporting the imports of cross-language design tokens
https://github.com/danmad/node-sass-token-importer
design-system parser tokens
Last synced: 10 days ago
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A module that extends node-sass by supporting the imports of cross-language design tokens
- Host: GitHub
- URL: https://github.com/danmad/node-sass-token-importer
- Owner: DanMad
- License: mit
- Created: 2021-04-20T11:46:07.000Z (almost 4 years ago)
- Default Branch: develop
- Last Pushed: 2023-10-18T12:47:44.000Z (over 1 year ago)
- Last Synced: 2024-10-02T03:41:09.563Z (4 months ago)
- Topics: design-system, parser, tokens
- Language: JavaScript
- Homepage: https://www.npmjs.com/package/node-sass-token-importer
- Size: 1.21 MB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
README
# Node Sass Token Importer
This package extends Patrick Mowrer's [node-sass-json-importer](https://github.com/pmowrer/node-sass-json-importer).
A token importer for [node-sass](https://github.com/sass/node-sass) that allows the importing of `.ts`, `.js`, `.json` and `.json5` files within Sass.
## Usage
### [node-sass](https://github.com/sass/node-sass)
This package hooks into the node-sass [importer api](https://github.com/sass/node-sass#importer--v200---experimental).
```javascript
// Make sure all `peerDependencies` are correctly installed in `node_modules`
var sass = require('node-sass');
var tokenImporter = require('node-sass-token-importer');
// Example 1
sass.render({
file: scss_filename,
importer: tokenImporter(),
[, options..]
}, function(err, result) {
console.log(result.css.toString())
});
// Example 2
var result = sass.renderSync({
data: scss_content
importer: [tokenImporter(), someOtherImporter]
[, options..]
});
```
### [node-sass](https://github.com/sass/node-sass) CLI
To run this using node-sass CLI, point `--importer` to your installed `node-sass-token-importer`, for example:
```sh
# Make sure all `peerDependencies` are correctly installed in `node_modules`
./node_modules/.bin/node-sass --importer node_modules/node-sass-token-importer/dist/cli.js --recursive ./src --output ./dist
```
### Webpack / [sass-loader](https://github.com/jtangelder/sass-loader)
```javascript
import tokenImporter from 'node-sass-token-importer';
// Webpack config
export default {
module: {
rules: [
{
test: /\.scss$/,
use: [
'style-loader',
'css-loader
{
loader: 'sass-loader',
options: {
// Apply the JSON importer via sass-loader's options.
sassOptions: {
importer: tokenImporter(),
},
},
},
},
],
],
},
};
```
#### ES Modules
To enable ES Module transpilation rename your `webpack.config.js` file to `webpack.config.babel.js`.
#### TypeScript
To enable TypeScript transpilation rename your `webpack.config.js` file to `webpack.config.babel.ts`.
## Importing
### Importing strings
Since JSON doesn't map directly to Sass's data types, a common source of confusion is how to handle strings. While [Sass allows strings to be both quoted and unquoted](http://sass-lang.com/documentation/file.SASS_REFERENCE.html#sass-script-strings), strings containing spaces, commas and/or other special characters have to be wrapped in quotes. In terms of JSON, this means the string has to be double quoted:
##### Incorrect
```json
{
"description": "A sentence with spaces."
}
```
##### Correct
```json
{
"description": "'A sentence with spaces.'"
}
```
### Importing `.ts` and/or `.js` Files
You can also import `.js` and `.ts` files. This way you can use TypeScript or JavaScript to compose and export your tokens.
```javascript
// Example 1
const colorBrandPrimary = '#f0f';
const colorBrandSecondary = '#ff0';
module.exports = {
colorBrandPrimary,
colorBrandSecondary,
};
```
```typescript
// Example 2
const colorBrandPrimary: string = '#f0f';
const colorBrandSecondary: string = '#ff0';
const tokens: Record = {
colorBrandPrimary,
colorBrandSecondary,
};
export {
...tokens,
tokens as default,
};
/*
* Please Note:
* Default exports inherit the file's name in kebab-case format (instead of
* $default). For example, if the source above was stored in a file named
* 'tokens.ts' the default export will be assigned to $tokens in your Sass
* environment.
*
* This behaviour is to avoid consecutive imports overwriting what is assigned
* to the $default variable.
*/
```
## Custom resolver
Should you care to resolve paths, say, starting with `~/` relative to project root or some other arbitrary directory, you can do so as follows:
`json/tokens.json` file:
```json
{
"body-margin": 0
}
```
`styles.scss` file:
```scss
@import '~/tokens.json';
body {
margin: $body-margin;
}
```
```js
var path = require('path');
var sass = require('node-sass');
var tokenImporter = require('../dist/node-sass-token-importer');
sass.render(
{
file: './styles.scss',
importer: tokenImporter({
resolver: function (dir, url) {
return url.startsWith('~/')
? path.resolve(dir, 'json', url.substr(2))
: path.resolve(dir, url);
},
}),
},
function (err, result) {
console.log(err || result.css.toString());
},
);
```
## camelCase to kebab-case
If you want to convert camelCase keys into CSS/SCSS compliant kebab-case keys, for example:
`tokens.json` file:
```json
{
"bgBackgroundColor": "#0ff"
}
```
For usage like so:
`styles.scss` file:
```scss
@import 'tokens.json';
div {
background: $bg-background-color;
}
```
You can set the `convertCase` option to `true` as an argument in `tokenImporter` like so:
```javascript
sass.render(
{
file: './styles.scss',
importer: tokenImporter({
convertCase: true,
}),
},
function (err, result) {
console.log(err || result.css.toString());
},
);
```
```sh
./node_modules/.bin/node-sass --importer node_modules/node-sass-token-importer/dist/cli.js --convertCase --recursive ./src --output ./dist
```