WIP: added PrefetchGraph component

packages/docs/src/routes/api/qwik/api.json

@@ -1688,6 +1688,20 @@
       "editUrl": "https://github.com/BuilderIO/qwik/tree/main/packages/qwik/src/core/render/jsx/types/jsx-generated.ts",
       "mdFile": "qwik.paramhtmlattributes.md"
     },
+    {
+      "name": "PrefetchGraph",
+      "id": "prefetchgraph",
+      "hierarchy": [
+        {
+          "name": "PrefetchGraph",
+          "id": "prefetchgraph"
+        }
+      ],
+      "kind": "Variable",
+      "content": "> This API is provided as an alpha preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.\n> \n\nLoad the prefetch graph for the container.\n\nEach Qwik container needs to include its own prefetch graph.\n\n\n```typescript\nPrefetchGraph: (opts?: {\n    base?: string;\n    manifestHash?: string;\n    manifestURL?: string;\n}) => import(\"@builder.io/qwik/jsx-runtime\").JSXNode<\"script\">\n```",
+      "editUrl": "https://github.com/BuilderIO/qwik/tree/main/packages/qwik/src/core/components/prefetch.ts",
+      "mdFile": "qwik.prefetchgraph.md"
+    },
     {
       "name": "PrefetchServiceWorker",
       "id": "prefetchserviceworker",
@@ -1698,7 +1712,7 @@
         }
       ],
       "kind": "Variable",
-      "content": "> This API is provided as an alpha preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.\n> \n\n\n```typescript\nPrefetchServiceWorker: (opts: {\n    base?: string;\n    path?: string;\n    verbose?: boolean;\n    fetchBundleGraph?: boolean;\n}) => import(\"@builder.io/qwik/jsx-runtime\").JSXNode<\"script\">\n```",
+      "content": "> This API is provided as an alpha preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.\n> \n\nInstall a service worker which will prefetch the bundles.\n\nThere can only be one service worker per page. Because there can be many separate Qwik Containers on the page each container needs to load its prefetch graph using `PrefetchGraph` component.\n\n\n```typescript\nPrefetchServiceWorker: (opts: {\n    base?: string;\n    path?: string;\n    verbose?: boolean;\n    fetchBundleGraph?: boolean;\n}) => import(\"@builder.io/qwik/jsx-runtime\").JSXNode<\"script\">\n```",
       "editUrl": "https://github.com/BuilderIO/qwik/tree/main/packages/qwik/src/core/components/prefetch.ts",
       "mdFile": "qwik.prefetchserviceworker.md"
     },

packages/docs/src/routes/api/qwik/index.md

@@ -1664,10 +1664,32 @@ export interface ParamHTMLAttributes<T extends Element> extends Attrs<'base', T,
 
 [Edit this section](https://github.com/BuilderIO/qwik/tree/main/packages/qwik/src/core/render/jsx/types/jsx-generated.ts)
 
+## PrefetchGraph
+
+> This API is provided as an alpha preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.
+
+Load the prefetch graph for the container.
+
+Each Qwik container needs to include its own prefetch graph.
+
+```typescript
+PrefetchGraph: (opts?: {
+  base?: string;
+  manifestHash?: string;
+  manifestURL?: string;
+}) => import("@builder.io/qwik/jsx-runtime").JSXNode<"script">;
+```
+
+[Edit this section](https://github.com/BuilderIO/qwik/tree/main/packages/qwik/src/core/components/prefetch.ts)
+
 ## PrefetchServiceWorker
 
 > This API is provided as an alpha preview for developers and may change based on feedback that we receive. Do not use this API in a production environment.
 
+Install a service worker which will prefetch the bundles.
+
+There can only be one service worker per page. Because there can be many separate Qwik Containers on the page each container needs to load its prefetch graph using `PrefetchGraph` component.
+
 ```typescript
 PrefetchServiceWorker: (opts: {
   base?: string;

packages/qwik/src/core/api.md

@@ -582,7 +582,14 @@ export interface ParamHTMLAttributes<T extends Element> extends Attrs<'base', T,
 // @internal
 export const _pauseFromContexts: (allContexts: QContext[], containerState: ContainerState, fallbackGetObjId?: GetObjID, textNodes?: Map<string, string>) => Promise<SnapshotResult>;
 
-// @alpha (undocumented)
+// @alpha
+export const PrefetchGraph: (opts?: {
+    base?: string;
+    manifestHash?: string;
+    manifestURL?: string;
+}) => JSXNode_2<"script">;
+
+// @alpha
 export const PrefetchServiceWorker: (opts: {
     base?: string;
     path?: string;

packages/qwik/src/core/components/prefetch.ts

@@ -1,12 +1,17 @@
+import { isDev } from '@builder.io/qwik/build';
 import { _jsxC } from '../internal';
 
 /**
+ * Install a service worker which will prefetch the bundles.
+ *
+ * There can only be one service worker per page. Because there can be many separate Qwik Containers
+ * on the page each container needs to load its prefetch graph using `PrefetchGraph` component.
+ *
  * @param opts - Options for the prefetch service worker.
  *
- *   - `base` Base URL for the service worker.
- *   - `path` Path to the service worker.
+ *   - `base` - Base URL for the service worker.
+ *   - `path` - Path to the service worker.
  *
- * @returns
  * @alpha
  */
 export const PrefetchServiceWorker = (opts: {
@@ -18,15 +23,14 @@ export const PrefetchServiceWorker = (opts: {
   const resolvedOpts = {
     base: '/',
     verbose: false,
-    fetchBundleGraph: true,
     path: 'qwik-prefetch-service-worker.js',
     ...opts,
   };
-  let code = CODE.replace('URL', resolvedOpts.base + resolvedOpts.path).replace(
+  let code = PREFETCH_CODE.replace('URL', resolvedOpts.base + resolvedOpts.path).replace(
     'SCOPE',
     resolvedOpts.base
   );
-  if (!resolvedOpts.verbose) {
+  if (!isDev) {
     code = code.replaceAll(/\s+/gm, '');
   }
   const props = {
@@ -37,20 +41,18 @@ export const PrefetchServiceWorker = (opts: {
         'navigator.serviceWorker',
         'window.qwikPrefetchSW||(window.qwikPrefetchSW=[])',
         resolvedOpts.verbose,
-        resolvedOpts.fetchBundleGraph,
       ].join(','),
       ');',
     ].join(''),
   };
   return _jsxC('script', props, 0, 'prefetch-service-worker');
 };
 
-const CODE = /*#__PURE__*/ ((
-  qc: HTMLElement,
-  c: ServiceWorkerContainer,
-  q: Array<any[]>,
-  v: boolean,
-  f: boolean,
+const PREFETCH_CODE = /*#__PURE__*/ ((
+  qc: HTMLElement, // QwikContainer Element
+  c: ServiceWorkerContainer, // Service worker container
+  q: Array<any[]>, // Queue of messages to send to the service worker.
+  v: boolean, // Verbose mode
   b?: string,
   h?: string
 ) => {
@@ -68,10 +70,63 @@ const CODE = /*#__PURE__*/ ((
     }
   );
   v && q.push(['verbose']);
-  f &&
-    document.addEventListener(
-      'qprefetch',
-      (e: any) => e.detail.bundles && q.push(['prefetch', b, ...e.detail.bundles])
-    );
-  q.push(['graph-url', b, `q-bundle-graph-${h}.json`]);
+  document.addEventListener(
+    'qprefetch',
+    (e: any) => e.detail.bundles && q.push(['prefetch', b, ...e.detail.bundles])
+  );
+}).toString();
+
+/**
+ * Load the prefetch graph for the container.
+ *
+ * Each Qwik container needs to include its own prefetch graph.
+ *
+ * @param opts - Options for the loading prefetch graph.
+ *
+ *   - `base` - Base of the graph. For a default installation this will default to `/build/`. But if
+ *       more than one MFE is installed on the page, then each MFE needs to have its own base.
+ *   - `manifestHash` - Hash of the manifest file to load. If not provided the hash will be extracted
+ *       from the container attribute `q:manifest-hash` and assume the default build file
+ *       `${base}/q-bundle-graph-${manifestHash}.json`.
+ *   - `manifestURL` - URL of the manifest file to load if non-standard bundle graph location name.
+ *
+ * @alpha
+ */
+export const PrefetchGraph = (
+  opts: { base?: string; manifestHash?: string; manifestURL?: string } = {}
+) => {
+  const resolvedOpts = {
+    base: '/build/',
+    manifestHash: null,
+    manifestURL: null,
+    ...opts,
+  };
+  let code = PREFETCH_GRAPH_CODE;
+  if (!isDev) {
+    code = code.replaceAll(/\s+/gm, '');
+  }
+  const props = {
+    dangerouslySetInnerHTML: [
+      '(' + code + ')(',
+      [
+        "document.currentScript.closest('[q\\\\:container]')",
+        'window.qwikPrefetchSW||(window.qwikPrefetchSW=[])',
+        JSON.stringify(resolvedOpts.base),
+        JSON.stringify(resolvedOpts.manifestHash),
+        JSON.stringify(resolvedOpts.manifestURL),
+      ].join(','),
+      ');',
+    ].join(''),
+  };
+  return _jsxC('script', props, 0, 'prefetch-graph');
+};
+
+const PREFETCH_GRAPH_CODE = /*#__PURE__*/ ((
+  qc: HTMLElement, // QwikContainer Element
+  q: Array<any[]>, // Queue of messages to send to the service worker.
+  b: string, // Base URL
+  h: string | null, // Manifest hash
+  u: string | null // Manifest URL
+) => {
+  q.push(['graph-url', b, u || `q-bundle-graph-${h || qc.getAttribute('q:manifest-hash')}.json`]);
 }).toString();

packages/qwik/src/core/index.ts

@@ -162,7 +162,7 @@ export type {
 //////////////////////////////////////////////////////////////////////////////////////////
 // Components
 //////////////////////////////////////////////////////////////////////////////////////////
-export { PrefetchServiceWorker } from './components/prefetch';
+export { PrefetchServiceWorker, PrefetchGraph } from './components/prefetch';
 
 //////////////////////////////////////////////////////////////////////////////////////////
 // INTERNAL