Merge pull request #1 from tbela99/generators

rewrite parser

README.md

@@ -1,2 +1,87 @@
 # css-parser
+
 CSS parser for node and the browser
+
+## Installation
+
+```shell
+$ npm install @tbela99/css-parser
+```
+
+## Parsing
+
+```javascript
+import {parse} from '@tbela99/css-parser';
+
+const {ast, errors} = parse(css);
+```
+
+### Usage
+
+```javascript
+
+parse(css, parseOptions = {})
+```
+### parseOptions
+
+- src: string, optional. css file location
+- location: boolean, optional. includes node location in the ast
+- processImport: boolean, process @import node - not yet implemented
+- deduplicate: boolean, remove duplicate node and merge rules
+- removeEmpty: boolean, remove empty nodes
+
+
+## Rendering
+
+### Usage
+
+```javascript
+import {render} from '@tbela99/css-parser';
+
+// pretty print
+const prettyPrint = render(ast);
+// minified
+const minified = render(ast, {compress: true})
+```
+
+### Rendering options
+
+- compress: boolean, optional. minify output. Also remove comments
+- indent: string, optional. indention string. uses space character by default.
+- newLine: string, new line character
+- removeComments: boolean, remove comments
+
+## Node Walker
+
+```javascript
+import {walk} from '@tbela99/css-parser';
+
+for (const node of walk(ast)) {
+
+    // do somehting
+}
+```
+
+## AST
+
+### Comment
+
+- typ: string 'Comment'
+- val: string, the comment
+
+### Rule
+
+- typ: string 'Rule'
+- sel: string, css selector
+- chi: array of children
+
+### AtRule
+
+- typ: string 'AtRule'
+- nam: string. AtRule name
+- val: rule prelude
+
+### AtRuleStyleSheet
+
+- typ: string 'Stylesheet'
+- chi: array of children