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import { visit as _visit, SKIP } from 'unist-util-visit';
// This is a workaround.
// It fixes a compatibility issue between different, incompatible ASTs given by plugins to Unist
const visit = _visit as (
node: any,
type: string,
callback?: (node: any, index: number, parent: any) => any
) => any;
// Remove the wrapping paragraph for <astro-root> islands
export default function remarkUnwrap() {
const astroRootNodes = new Set();
let insideAstroRoot = false;
return (tree: any) => {
// reset state
insideAstroRoot = false;
astroRootNodes.clear();
visit(tree, 'html', (node) => {
if (node.value.indexOf('<astro-root') > -1 && !insideAstroRoot) {
insideAstroRoot = true;
}
if (node.value.indexOf('</astro-root') > -1 && insideAstroRoot) {
insideAstroRoot = false;
}
astroRootNodes.add(node);
});
visit(tree, 'paragraph', (node, index, parent) => {
if (parent && typeof index === 'number' && containsAstroRootNode(node)) {
parent.children.splice(index, 1, ...node.children);
return [SKIP, index];
}
});
};
function containsAstroRootNode(node: any) {
return node.children
.map((child: any) => astroRootNodes.has(child))
.reduce((all: boolean, v: boolean) => (all ? all : v), false);
}
}
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