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perf(csr): load component controllers on demand

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This commit is contained in:
Clintchiz
2026-08-09 14:10:15 +05:30
parent 324928cfca
commit 1660044ed2
8 changed files with 180 additions and 11 deletions
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packages/csr/src/index.ts
+119 -5
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@@ -17,12 +17,14 @@ export { NAV_RUNTIME } from "./nav-runtime.ts";
export { REALTIME_RUNTIME } from "./realtime-runtime.ts";
export { ACTION_RUNTIME } from "./action-runtime.ts";
/** The reactive runtime served at `/__wrnexus/reactive.js` (plain browser JS). */
export function getReactiveRuntime(development = false): string {
const CONTROLLER_SECTIONS = ["PRIMARY", "UI", "PIN"] as const;
function runtimeForMode(development: boolean): string {
if (development) {
return REACTIVE_RUNTIME
.replace(/\/\*__WRNEXUS_DEV_START__\*\//g, "")
.replace(/\/\*__WRNEXUS_DEV_END__\*\//g, "");
return REACTIVE_RUNTIME.replace(/\/\*__WRNEXUS_DEV_START__\*\//g, "").replace(
/\/\*__WRNEXUS_DEV_END__\*\//g,
"",
);
}
return REACTIVE_RUNTIME.replace(
/\/\*__WRNEXUS_DEV_START__\*\/[\s\S]*?\/\*__WRNEXUS_DEV_END__\*\//g,
@@ -30,6 +32,118 @@ export function getReactiveRuntime(development = false): string {
);
}
function controllerSection(source: string, name: (typeof CONTROLLER_SECTIONS)[number]): string {
const pattern = new RegExp(
`/\\*__WRNEXUS_CONTROLLERS_${name}_START__\\*/([\\s\\S]*?)/\\*__WRNEXUS_CONTROLLERS_${name}_END__\\*/`,
);
const match = pattern.exec(source);
if (!match?.[1]) throw new Error(`Missing reactive runtime controller section: ${name}`);
return match[1];
}
function stripControllerSections(source: string): string {
for (const name of CONTROLLER_SECTIONS) {
source = source.replace(
new RegExp(
`/\\*__WRNEXUS_CONTROLLERS_${name}_START__\\*/[\\s\\S]*?/\\*__WRNEXUS_CONTROLLERS_${name}_END__\\*/`,
),
"",
);
}
return source;
}
const CONTROLLER_LOADER = String.raw`
var componentControllerSelector = "[data-wrn-anchored],[data-wrn-dialog],[data-wrn-roving],[data-wrn-scrollspy],[data-wrn-splitter],[data-wrn-navbar],[data-wrn-preferences],[data-wrn-select],[data-wrn-pin-input]";
var componentControllerPromise = null;
var componentControllerUrl = (document.currentScript && document.currentScript.src)
? new URL("./controllers.js", document.currentScript.src).href
: "/__wrnexus/controllers.js";
function needsComponentControllers(root) {
var host = root || document;
return !!((host.matches && host.matches(componentControllerSelector)) ||
(host.querySelector && host.querySelector(componentControllerSelector)));
}
function loadComponentControllers(root) {
if (!needsComponentControllers(root)) return;
if (window.__wrnexusComponentControllers) {
window.__wrnexusComponentControllers.hydrate(root || document);
return;
}
if (!componentControllerPromise) {
componentControllerPromise = new Promise(function (resolve, reject) {
var script = document.createElement("script");
script.src = componentControllerUrl;
script.defer = true;
script.onload = resolve;
script.onerror = reject;
document.head.appendChild(script);
});
}
componentControllerPromise.then(function () {
if (window.__wrnexusComponentControllers) window.__wrnexusComponentControllers.hydrate(root || document);
}).catch(function (error) { console.error("[wrnexus] failed to load component controllers", error); });
}
`;
/** The reactive runtime served at `/__wrnexus/reactive.js` (plain browser JS). */
export function getReactiveRuntime(development = false): string {
let source = stripControllerSections(runtimeForMode(development));
source = source.replace(" function hydrateScopes(root) {", `${CONTROLLER_LOADER}\n function hydrateScopes(root) {`);
source = source.replace(
" hydrateNavbarControllers(host);\n hydratePreferenceControllers(host);\n hydrateSelectControllers(host);\n hydratePinInputControllers(host);",
" loadComponentControllers(host);",
);
source = source.replace(" startDocumentWatch();\n", "");
source = source.replace(
" setupAnchoredOverlays();\n setupModalDialogs();\n setupRovingFocus();\n setupScrollspy();\n setupSplitters();",
" loadComponentControllers(document);",
);
source = source.replace(
" window.__wrnexusRepositionAnchored = repositionAnchored;",
" window.__wrnexusRepositionAnchored = function (root) { if (window.__wrnexusComponentControllers) window.__wrnexusComponentControllers.reposition(root); };",
);
source = source.replace(
" window.__wrnexusMountClientRoots = mountClientRoots;",
` window.__wrnexusControllerBridge = { invokeComponentOutput: invokeComponentOutput, callServerFunction: callServerFunction, dispatchComponentEvent: dispatchComponentEvent, emitPinInputEvent: emitPinInputEvent, parseScopeDecl: parseScopeDecl, warn: ${development ? "warnOnce" : "function () {}"} };\n window.__wrnexusMountClientRoots = mountClientRoots;`,
);
return source;
}
/** Component-specific controllers, loaded only when their marker is present. */
export function getComponentControllerRuntime(development = false): string {
const source = runtimeForMode(development);
const sections = CONTROLLER_SECTIONS.map((name) => controllerSection(source, name)).join("\n");
return `
(function () {
"use strict";
var bridge = window.__wrnexusControllerBridge || {};
var invokeComponentOutput = bridge.invokeComponentOutput;
var callServerFunction = bridge.callServerFunction;
var dispatchComponentEvent = bridge.dispatchComponentEvent;
var emitPinInputEvent = bridge.emitPinInputEvent;
var parseScopeDecl = bridge.parseScopeDecl;
var warnOnce = bridge.warn || function () {};
${sections}
function hydrate(root) {
var host = root || document;
hydrateNavbarControllers(host);
hydratePreferenceControllers(host);
hydrateSelectControllers(host);
hydratePinInputControllers(host);
syncRovingGroups(host);
}
setupAnchoredOverlays();
setupModalDialogs();
setupRovingFocus();
setupScrollspy();
setupSplitters();
window.__wrnexusComponentControllers = { hydrate: hydrate, reposition: repositionAnchored };
hydrate(document);
})();
`.trim();
}
/** The client-side navigation runtime served at `/__wrnexus/nav.js`. */
export function getNavRuntime(): string {
return NAV_RUNTIME;