What is css-parse?
The css-parse npm package is a utility for parsing CSS strings into an abstract syntax tree (AST). This can be useful for analyzing, transforming, or manipulating CSS code programmatically.
What are css-parse's main functionalities?
Parsing CSS to AST
This feature allows you to parse a CSS string into an abstract syntax tree (AST). The resulting AST can be used for further analysis or transformation of the CSS code.
const css = require('css-parse');
const stylesheet = css.parse('body { font-size: 12px; }');
console.log(JSON.stringify(stylesheet, null, 2));
Handling CSS Errors
This feature demonstrates how to handle errors that may occur during the parsing of CSS. The parser will throw an error if the CSS is not well-formed, which can be caught and handled appropriately.
const css = require('css-parse');
try {
const stylesheet = css.parse('body { font-size: 12px;');
} catch (error) {
console.error('CSS Parsing Error:', error.message);
}
Other packages similar to css-parse
postcss
PostCSS is a tool for transforming CSS with JavaScript plugins. It provides a more extensive set of features compared to css-parse, including the ability to parse, transform, and stringify CSS. PostCSS is widely used in the industry and has a large ecosystem of plugins.
css-tree
CSS Tree is a toolset for CSS including a fast and small CSS parser, walker, generator, and lexer. It offers more advanced features for working with CSS ASTs, such as optimization and validation, making it a more comprehensive solution compared to css-parse.
csstree
CSSTree is another library for working with CSS. It provides a fast and small CSS parser, walker, generator, and lexer. CSSTree is designed to be highly efficient and offers more advanced features for working with CSS ASTs, such as optimization and validation.
css-parse
CSS parser.
Example
js:
var parse = require('css-parse')
parse('tobi { name: "tobi" }')
object returned:
{
"stylesheet": {
"rules": [
{
"selectors": ["tobi"],
"declarations": [
{
"property": "name",
"value": "tobi"
}
]
}
]
}
}
License
(The MIT License)
Copyright (c) 2012 TJ Holowaychuk <tj@vision-media.ca>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.