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https://github.com/wizardpisces/tiny-sass-compiler
Another sass compiler write from scatch，runnable on both node and browser
https://github.com/wizardpisces/tiny-sass-compiler
cli compiler lexical-analyzer parser sass superstruct typescript
Last synced: 3 months ago
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Another sass compiler write from scatch，runnable on both node and browser
- Host: GitHub
- URL: https://github.com/wizardpisces/tiny-sass-compiler
- Owner: wizardpisces
- License: mit
- Created: 2020-03-13T10:50:06.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2023-10-20T06:02:54.000Z (8 months ago)
- Last Synced: 2024-03-18T14:09:18.714Z (3 months ago)
- Topics: cli, compiler, lexical-analyzer, parser, sass, superstruct, typescript
- Language: TypeScript
- Homepage:
- Size: 1.27 MB
- Stars: 284
- Watchers: 4
- Forks: 7
- Open Issues: 2
-
Metadata Files:
- Readme: readme.md
- Changelog: changelog.md
- License: LICENSE
Lists
- awesome-github-star - tiny-sass-compiler
README
## Description
Another SASS compiler written from scratch, runnable both in ***node*** and ***browser*** environment
[Demo](https://wizardpisces.github.io/sass)
## Target
This project(**Not Production Ready**) is for people who want to understand how to write a compiler; Basic Steps:
1. SourceCode (SASS Scanning)
2. TokenStream (Parsing)
3. [AST or Abstract Syntax Tree](https://en.wikipedia.org/wiki/Abstract_syntax_tree) (Analysis)
4. [IR or Intermediate_representation](https://en.wikipedia.org/wiki/Intermediate_representation)
5. HighLevelLanguage (CSS Code and SourceMap Generation)
## Features:
1. Variables
2. Nesting
3. Extend/Inheritance
4. Operators
5. Mixins
6. Modules ([@import](https://sass-lang.com/documentation/at-rules/import) and [@use](https://sass-lang.com/documentation/at-rules/use)(which is more efficient than @import))
## Installation
```bash
npm install --save tiny-sass-compiler
```
### Usage in node
```ts
import sass from "tiny-sass-compiler";
//render API
sass.render({filename:'./default.scss'},(err,result)=>{
console.log(result.code)
})
// or renderSync
const result = sass.renderSync({filename:'./default.scss'})
console.log(result.code)
```
### Usage in browser
```ts
import {compile} from 'tiny-sass-compiler/dist/tiny-sass-compiler.esm-browser.prod.js'
const result = compile(`
$font-stack: Helvetica, sans-serif;
$primary-color: #333;
body .test{
font: 100% $font-stack;
color: $primary-color;
}`)
console.log(result.code)
```
## Terminal Setup
```bash
npm install -g tiny-sass-compiler
```
### Command Line Interface
*Support **.scss** extension for now*
### Usage
`tiny-sass [output]`
The `input` and `output` must be a directory
Example
```bash
tiny-sass src/ dist/
```
*will generate intermediate AST file in dist/ast and css file in dist/css*
## Test
### Snapshot Test
**Development**
```bash
npm run test-source
```
**Production**
```bash
npm run test
```
*will generate intermediate AST file in test-dist/ast and css file in test-dist/css*
### Example:
#### input:
```scss
$font-stack: Helvetica, sans-serif;
$primary-color: #333;
body .test{
font: 100% $font-stack;
color: $primary-color;
}
```
#### output:
CSS
```css
body .test {
font: 100% Helvetica, sans-serif;
color: #333;
}
```
### Jest test
```bash
npm run jest
```
*Interested in more intermediate status? View files in ./test-dist/ which contains ast after parse+transform and dist code after codegen*
## Other Readme
* [AST Descriptor Syntax](https://github.com/wizardpisces/tiny-sass-compiler/blob/master/src/parse/ast.ts)
* [AST travesal Plugin](https://github.com/wizardpisces/tiny-sass-compiler/blob/master/traversal.md)
* [AST Interpret Transform Plugin](https://github.com/wizardpisces/tiny-sass-compiler/blob/master/transform.md)
## Reference
* [csstree](https://github.com/csstree/csstree)
* [astexplorer](https://astexplorer.net/#/gist/244e2fb4da940df52bf0f4b94277db44/e79aff44611020b22cfd9708f3a99ce09b7d67a8)
* [vue-next/compiler-core](https://github.com/vuejs/vue-next/tree/master/packages/compiler-core)
* [lisperator](http://lisperator.net/pltut/)
* [less](https://less.bootcss.com/features/#plugin-at-rules)
* [hast](https://github.com/syntax-tree/hast)
* [unist](https://github.com/syntax-tree/unist)