@astrojs/compiler v2.10.3
Astro Compiler
Astro’s Go + WASM compiler.
Install
npm install @astrojs/compiler
Usage
Transform .astro
to valid TypeScript
The Astro compiler can convert .astro
syntax to a TypeScript Module whose default export generates HTML.
Some notes...
- TypeScript is valid
.astro
syntax! The output code may need an additional post-processing step to generate valid JavaScript. .astro
files rely on a server implementation exposed asastro/runtime/server/index.js
in the Node ecosystem. Other runtimes currently need to bring their own rendering implementation and reference it viainternalURL
. This is a pain point we're looking into fixing.
import { transform, type TransformResult } from "@astrojs/compiler";
const result = await transform(source, {
filename: "/Users/astro/Code/project/src/pages/index.astro",
sourcemap: "both",
internalURL: "astro/runtime/server/index.js",
});
Parse .astro
and return an AST
The Astro compiler can emit an AST using the parse
method.
Some notes...
- Position data is currently incomplete and in some cases incorrect. We're working on it!
- A
TextNode
can represent both HTMLtext
and JavaScript/TypeScript source code. - The
@astrojs/compiler/utils
entrypoint exposes awalk
function that can be used to traverse the AST. It also exposes theis
helper which can be used as guards to derive the proper types for eachnode
.
import { parse } from "@astrojs/compiler";
import { walk, is } from "@astrojs/compiler/utils";
const result = await parse(source, {
position: false, // defaults to `true`
});
walk(result.ast, (node) => {
// `tag` nodes are `element` | `custom-element` | `component`
if (is.tag(node)) {
console.log(node.name);
}
});
Develop
VSCode / CodeSpaces
A devcontainer
configuration is available for use with VSCode's Remote Development extension pack and GitHub CodeSpaces.
Contributing
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