server.ts — astro Source File

Source Code

import type { AstroComponentMetadata, NamedSSRLoadedRendererValue } from 'astro';
import { Component as BaseComponent, h, type VNode } from 'preact';
import { renderToStringAsync } from 'preact-render-to-string';
import { getContext } from './context.js';
import { restoreSignalsOnProps, serializeSignals } from './signals.js';
import StaticHtml from './static-html.js';
import type { AstroPreactAttrs, RendererContext } from './types.js';

const slotName = (str: string) => str.trim().replace(/[-_]([a-z])/g, (_, w) => w.toUpperCase());

let originalConsoleError: typeof console.error;
let consoleFilterRefs = 0;

async function check(
	this: RendererContext,
	Component: any,
	props: Record<string, any>,
	children: any,
) {
	if (typeof Component !== 'function') return false;
	if (Component.name === 'QwikComponent') return false;

	if (Component.prototype != null && typeof Component.prototype.render === 'function') {
		return BaseComponent.isPrototypeOf(Component);
	}

	useConsoleFilter();

	try {
		const { html } = await renderToStaticMarkup.call(this, Component, props, children, undefined);
		if (typeof html !== 'string') {
			return false;
		}

		// There are edge cases (SolidJS) where Preact *might* render a string,
		// but components would be <undefined></undefined>
		// It also might render an empty string.
		return html == '' ? false : !html.includes('<undefined>');
	} catch {
		return false;
	} finally {
		finishUsingConsoleFilter();
	}
}

function shouldHydrate(metadata: AstroComponentMetadata | undefined) {
	// Adjust how this is hydrated only when the version of Astro supports `astroStaticSlot`
	return metadata?.astroStaticSlot ? !!metadata.hydrate : true;
}

async function renderToStaticMarkup(
	this: RendererContext,
	Component: any,
	props: Record<string, any>,
	{ default: children, ...slotted }: Record<string, any>,
	metadata: AstroComponentMetadata | undefined,
) {
	const ctx = getContext(this.result);

	const slots: Record<string, ReturnType<typeof h>> = {};
// ... (94 more lines)