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|
import type { RenderableTreeNodes } from '@markdoc/markdoc';
import Markdoc from '@markdoc/markdoc';
import type { AstroInstance, SSRResult } from 'astro';
import type { HTMLString } from 'astro/runtime/server/index.js';
import {
createComponent,
createHeadAndContent,
isHTMLString,
render,
renderComponent,
renderScriptElement,
renderTemplate,
renderUniqueStylesheet,
unescapeHTML,
} from 'astro/runtime/server/index.js';
export type TreeNode =
// Markdoc `if` tag often returns an array of nodes in the AST, which gets translated
// here as an array of `TreeNode`s, which we'll render all without a wrapper.
| TreeNode[]
| {
type: 'text';
content: string | HTMLString;
}
| {
type: 'component';
component: AstroInstance['default'];
collectedLinks?: string[];
collectedStyles?: string[];
collectedScripts?: string[];
props: Record<string, any>;
children: TreeNode[];
}
| {
type: 'element';
tag: string;
attributes: Record<string, any>;
children: TreeNode[];
};
function renderTreeNodeToFactoryResult(result: SSRResult, treeNode: TreeNode) {
if (Array.isArray(treeNode)) {
return Promise.all(
treeNode.map((node) =>
renderComponent(result, 'ComponentNode', ComponentNode, { treeNode: node }),
),
);
}
if (treeNode.type === 'text') return render`${treeNode.content}`;
const slots = {
default: () =>
render`${treeNode.children.map((child) =>
renderComponent(result, 'ComponentNode', ComponentNode, { treeNode: child }),
)}`,
};
if (treeNode.type === 'component') {
let styles = '',
links = '',
scripts = '';
if (Array.isArray(treeNode.collectedStyles)) {
styles = treeNode.collectedStyles
.map((style: any) =>
renderUniqueStylesheet(result, {
type: 'inline',
content: style,
}),
)
.join('');
}
if (Array.isArray(treeNode.collectedLinks)) {
links = treeNode.collectedLinks
.map((link: any) => {
return renderUniqueStylesheet(result, {
type: 'external',
src: link[0] === '/' ? link : '/' + link,
});
})
.join('');
}
if (Array.isArray(treeNode.collectedScripts)) {
scripts = treeNode.collectedScripts
.map((script: any) => renderScriptElement(script))
.join('');
}
const head = unescapeHTML(styles + links + scripts);
let headAndContent = createHeadAndContent(
head,
renderTemplate`${renderComponent(
result,
treeNode.component.name,
treeNode.component,
treeNode.props,
slots,
)}`,
);
// Let the runtime know that this component is being used.
// @ts-expect-error Astro only uses `init()` so specify it only (plus `_metadata` is internal)
result._metadata.propagators.add({
init() {
return headAndContent;
},
});
return headAndContent;
}
return renderComponent(result, treeNode.tag, treeNode.tag, treeNode.attributes, slots);
}
export const ComponentNode = createComponent({
factory(result: SSRResult, { treeNode }: { treeNode: TreeNode | TreeNode[] }) {
return renderTreeNodeToFactoryResult(result, treeNode);
},
propagation: 'self',
});
export async function createTreeNode(node: RenderableTreeNodes): Promise<TreeNode> {
if (Array.isArray(node)) {
return Promise.all(node.map((child) => createTreeNode(child)));
} else if (isHTMLString(node)) {
return { type: 'text', content: node as HTMLString };
} else if (typeof node === 'string' || typeof node === 'number') {
return { type: 'text', content: String(node) };
} else if (node === null || typeof node !== 'object' || !Markdoc.Tag.isTag(node)) {
return { type: 'text', content: '' };
}
const children = await Promise.all(node.children.map((child) => createTreeNode(child)));
if (typeof node.name === 'function') {
const component = node.name;
const props = node.attributes;
return {
type: 'component',
component,
props,
children,
};
} else if (isPropagatedAssetsModule(node.name)) {
const { collectedStyles, collectedLinks, collectedScripts } = node.name;
const component = (await node.name.getMod()).default;
const props = node.attributes;
return {
type: 'component',
component,
collectedStyles,
collectedLinks,
collectedScripts,
props,
children,
};
} else {
return {
type: 'element',
tag: node.name,
attributes: node.attributes,
children,
};
}
}
type PropagatedAssetsModule = {
__astroPropagation: true;
getMod: () => Promise<AstroInstance>;
collectedStyles: string[];
collectedLinks: string[];
collectedScripts: string[];
};
function isPropagatedAssetsModule(module: any): module is PropagatedAssetsModule {
return typeof module === 'object' && module != null && '__astroPropagation' in module;
}
|
