hast utility to transform a tree to estree JSX.
npm:
npm install hast-util-to-estreeSay we have the following HTML file, example.html:
<!doctype html>
<html lang=en>
<title>Hi!</title>
<link rel=stylesheet href=index.css>
<h1>Hello, world!</h1>
<a download style="width:1;height:10px"></a>
<!--commentz-->
<svg xmlns="http://www.w3.org/2000/svg">
<title>SVG `<ellipse>` element</title>
<ellipse
cx="120"
cy="70"
rx="100"
ry="50"
/>
</svg>
<script src="index.js"></script>And our script, example.js, is:
var fs = require('fs')
var parse5 = require('parse5')
var fromParse5 = require('hast-util-from-parse5')
var toEstree = require('hast-util-to-estree')
var recast = require('recast')
var hast = fromParse5(parse5.parse(String(fs.readFileSync('example.html'))))
var estree = toEstree(hast)
estree.comments = null // `recast` doesn’t like comments on the root.
console.log(recast.prettyPrint(estree).code)Now, node example (and prettier), yields:
;<>
<html lang="en">
<head>
<title>{'Hi!'}</title>
{'\n'}
<link rel="stylesheet" href="index.css" />
{'\n'}
</head>
<body>
<h1>{'Hello, world!'}</h1>
{'\n'}
<a
download
style={{
width: '1',
height: '10px'
}}
/>
{'\n'}
{/*commentz*/}
{'\n'}
<svg xmlns="http://www.w3.org/2000/svg">
{'\n '}
<title>{'SVG `<ellipse>` element'}</title>
{'\n '}
<ellipse cx="120" cy="70" rx="100" ry="50" />
{'\n'}
</svg>
{'\n'}
<script src="index.js" />
{'\n'}
</body>
</html>
</>Transform a hast tree to an estree (JSX).
space(enum,'svg'or'html', default:'html') — Whether node is in the'html'or'svg'space. If ansvgelement is found when inside the HTML space,toEstreeautomatically switches to the SVG space when entering the element, and switches back when exiting
estree — a Program node, whose last child in body is most
likely an ExpressionStatement whose expression is a JSXFragment or a
JSXElement.
Typically, there is only one node in body, however, this utility also supports
embedded MDX nodes in the HTML (when mdast-util-mdx is used
with mdast to parse markdown before passing its nodes through to hast).
When MDX ESM import/exports are used, those nodes are added before the fragment
or element in body.
Comments are both attached to the tree in their neighbouring nodes (recast and
babel style), and added as a comments array on the program node (espree
style).
You may have to do program.comments = null for certain compilers.
There aren’t many great estree serializers out there that support JSX.
recast does a fine job.
Or use estree-util-build-jsx to turn JSX into function
calls and then serialize with whatever (astring, escodegen).
You’re working with JavaScript. It’s not safe.
hastscript— Hyperscript compatible interface for creating nodeshast-util-from-dom— Transform a DOM tree to hastunist-builder— Create any unist treexastscript— Create a xast treeestree-util-build-jsx— Transform JSX to function calls
See contributing.md in syntax-tree/.github for ways to get
started.
See support.md for ways to get help.
This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.
