Init

node_modules/preact-render-to-string/src/stream.js

@@ -0,0 +1,43 @@
+import { Deferred } from './lib/util.js';
+import { renderToChunks } from './lib/chunked.js';
+
+/** @typedef {ReadableStream<Uint8Array> & { allReady: Promise<void>}} RenderStream */
+
+/**
+ * @param {import('preact').VNode} vnode
+ * @param {any} [context]
+ * @returns {RenderStream}
+ */
+export function renderToReadableStream(vnode, context) {
+	/** @type {Deferred<void>} */
+	const allReady = new Deferred();
+	const encoder = new TextEncoder('utf-8');
+
+	/** @type {RenderStream} */
+	const stream = new ReadableStream({
+		start(controller) {
+			renderToChunks(vnode, {
+				context,
+				onError: (error) => {
+					allReady.reject(error);
+					controller.abort(error);
+				},
+				onWrite(s) {
+					controller.enqueue(encoder.encode(s));
+				}
+			})
+				.then(() => {
+					controller.close();
+					allReady.resolve();
+				})
+				.catch((error) => {
+					controller.error(error);
+					allReady.reject(error);
+				});
+		}
+	});
+
+	stream.allReady = allReady.promise;
+
+	return stream;
+}