84 lines
2.1 KiB
TypeScript
84 lines
2.1 KiB
TypeScript
import type { AstroInstance } from 'astro';
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import type { RenderableTreeNode } from '@markdoc/markdoc';
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import Markdoc from '@markdoc/markdoc';
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import z from 'zod';
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export type AstroNode =
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| string
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| {
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component: AstroInstance['default'];
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props: Record<string, any>;
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children: AstroNode[];
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}
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| {
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tag: string;
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attributes: Record<string, any>;
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children: AstroNode[];
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};
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export function createAstroNode(
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node: RenderableTreeNode,
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components: Record<string, AstroInstance['default']> = {}
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): AstroNode {
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components = validateComponents(components);
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if (typeof node === 'string' || typeof node === 'number') {
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return String(node);
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} else if (node === null || typeof node !== 'object' || !Markdoc.Tag.isTag(node)) {
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return '';
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}
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if (isCapitalized(node.name) && node.name in components) {
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const component = components[node.name];
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const props = node.attributes;
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const children = node.children.map((child) => createAstroNode(child, components));
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return {
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component,
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props,
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children,
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};
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} else if (isCapitalized(node.name)) {
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throw new Error(
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`[Markdoc] Unable to render ${JSON.stringify(
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node.name
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)}. Did you add this to the "components" prop on your <Content /> component?`
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);
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} else {
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return {
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tag: node.name,
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attributes: node.attributes,
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children: node.children.map((child) => createAstroNode(child, components)),
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};
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}
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}
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function validateComponents(components: Record<string, AstroInstance['default']>) {
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return z
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.record(
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z
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.string()
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.min(1, toComponentsKeyErrorMsg('Component name cannot be empty.'))
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.refine(
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(value) => isCapitalized(value),
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(value) => ({
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message: toComponentsKeyErrorMsg(
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`Component name must be capitalized (received ${JSON.stringify(
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value
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)}). If you want to render HTML elements as components, try using a Markdoc node [TODO: DOCS LINK]`
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),
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})
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),
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z.any()
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)
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.parse(components);
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}
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function toComponentsKeyErrorMsg(msg: string) {
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return '[Markdoc] Invalid "components" prop: ' + msg;
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}
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function isCapitalized(str: string) {
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return str.length > 0 && str[0] === str[0].toUpperCase();
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}
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