diff --git a/.gitignore b/.gitignore
index 211ff22fb..21053dc04 100644
--- a/.gitignore
+++ b/.gitignore
@@ -72,7 +72,9 @@ tmp/
.tmp/
# Generated files
-packages/core/src/generated/
+packages/core/src/generated/*
+!packages/core/src/generated/position-edits-render-inline.ts
+!packages/core/src/generated/position-edits-render-inline.test.ts
packages/producer/src/services/fontData.generated.ts
# Plan documents (working artifacts, not committed)
diff --git a/packages/core/package.json b/packages/core/package.json
index e4f9ea6a7..70d9edc8e 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -119,6 +119,12 @@
"import": "./src/runtime/positionEdits.ts",
"types": "./src/runtime/positionEdits.ts"
},
+ "./runtime/position-edits-render": {
+ "bun": "./src/generated/position-edits-render-inline.ts",
+ "node": "./dist/generated/position-edits-render-inline.js",
+ "import": "./src/generated/position-edits-render-inline.ts",
+ "types": "./src/generated/position-edits-render-inline.ts"
+ },
"./runtime/lottie-readiness": {
"bun": "./src/lottieReadiness.ts",
"node": "./dist/lottieReadiness.js",
@@ -309,6 +315,10 @@
"import": "./dist/runtime/positionEdits.js",
"types": "./dist/runtime/positionEdits.d.ts"
},
+ "./runtime/position-edits-render": {
+ "import": "./dist/generated/position-edits-render-inline.js",
+ "types": "./dist/generated/position-edits-render-inline.d.ts"
+ },
"./runtime/lottie-readiness": {
"import": "./dist/lottieReadiness.js",
"types": "./dist/lottieReadiness.d.ts"
@@ -388,13 +398,14 @@
"types": "./dist/index.d.ts"
},
"scripts": {
- "build": "bun run build:hyperframes-runtime && tsc && tsx scripts/rewrite-esm-extensions.ts",
+ "build": "bun run build:hyperframes-runtime && bun run build:position-edits-render && tsc && tsx scripts/rewrite-esm-extensions.ts",
"test": "vitest run",
"test:watch": "vitest",
"test:coverage": "vitest run --coverage",
"typecheck": "tsc --noEmit",
"lint:runtime-preview-guards": "tsx scripts/lint-runtime-preview-guards.ts",
"build:hyperframes-runtime": "tsx scripts/build-hyperframes-runtime-artifact.ts",
+ "build:position-edits-render": "tsx scripts/build-position-edits-render.ts",
"build:hyperframes-runtime:modular": "SANDBOX_RUNTIME_VARIANT=modular tsx scripts/build-hyperframes-runtime-artifact.ts",
"build:hyperframe-runtime": "tsx scripts/build-hyperframes-runtime-artifact.ts",
"test:hyperframe-runtime-contract": "tsx scripts/test-hyperframe-runtime-contract.ts",
diff --git a/packages/core/scripts/build-position-edits-render.ts b/packages/core/scripts/build-position-edits-render.ts
new file mode 100644
index 000000000..8e4d25be7
--- /dev/null
+++ b/packages/core/scripts/build-position-edits-render.ts
@@ -0,0 +1,52 @@
+/** Build the injectable position-edits render artifact from the canonical runtime. */
+
+import { mkdirSync, writeFileSync } from "node:fs";
+import { dirname, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+import { buildSync } from "esbuild";
+import { execSync } from "node:child_process";
+
+const thisDir = dirname(fileURLToPath(import.meta.url));
+const repoRoot = resolve(thisDir, "..");
+const entry = resolve(repoRoot, "stubs/position-edits-render-entry.ts");
+const generatedDir = resolve(repoRoot, "src/generated");
+const outPath = resolve(generatedDir, "position-edits-render-inline.ts");
+
+const result = buildSync({
+ entryPoints: [entry],
+ bundle: true,
+ write: false,
+ platform: "browser",
+ format: "iife",
+ target: ["es2020"],
+ minify: true,
+ legalComments: "none",
+});
+const iife = result.outputFiles[0]?.text ?? "";
+if (!iife) throw new Error("esbuild produced no output for position-edits-render-entry.ts");
+
+mkdirSync(generatedDir, { recursive: true });
+writeFileSync(
+ outPath,
+ [
+ "// AUTO-GENERATED by scripts/build-position-edits-render.ts - do not edit",
+ `const POSITION_EDITS_RENDER_IIFE: string = ${JSON.stringify(iife)};`,
+ "",
+ "/** Returns the pre-built position-edits render IIFE as a string constant. */",
+ "export function getPositionEditsRenderScript(): string {",
+ " return POSITION_EDITS_RENDER_IIFE;",
+ "}",
+ "",
+ ].join("\n"),
+ "utf8",
+);
+
+try {
+ execSync(`bunx oxfmt ${outPath}`, { stdio: "ignore" });
+} catch {
+ // Formatting is best effort when the generator runs in a minimal environment.
+}
+
+console.log(
+ JSON.stringify({ event: "position_edits_render_generated", outPath, bytes: iife.length }),
+);
diff --git a/packages/core/src/generated/position-edits-render-inline.test.ts b/packages/core/src/generated/position-edits-render-inline.test.ts
new file mode 100644
index 000000000..bd09b90f5
--- /dev/null
+++ b/packages/core/src/generated/position-edits-render-inline.test.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+import { getPositionEditsRenderScript } from "./position-edits-render-inline";
+
+describe("getPositionEditsRenderScript", () => {
+ it("returns a non-empty IIFE string built from the real algorithm", () => {
+ const script = getPositionEditsRenderScript();
+ expect(script.length).toBeGreaterThan(0);
+ expect(script).toContain("data-hf-edit-base-x");
+ });
+
+ it("is a safe no-op without position-edit markers", () => {
+ document.body.innerHTML = "
no edits
";
+ expect(() => new Function(getPositionEditsRenderScript())()).not.toThrow();
+ expect(document.querySelector("h1")?.style.getPropertyValue("translate")).toBe("");
+ });
+
+ it("applies the translate delta when markers are present", () => {
+ document.body.innerHTML =
+ 'hi
';
+ new Function(getPositionEditsRenderScript())();
+ expect(document.querySelector("h1")?.style.getPropertyValue("translate")).toBe("10px 0px");
+ });
+});
diff --git a/packages/core/src/generated/position-edits-render-inline.ts b/packages/core/src/generated/position-edits-render-inline.ts
new file mode 100644
index 000000000..967ce4a9c
--- /dev/null
+++ b/packages/core/src/generated/position-edits-render-inline.ts
@@ -0,0 +1,8 @@
+// AUTO-GENERATED by scripts/build-position-edits-render.ts - do not edit
+const POSITION_EDITS_RENDER_IIFE: string =
+ '"use strict";(()=>{function g(){return globalThis}function w(t,e){if(typeof window>"u")return;let n=g(),o=n.__hf?.onSwallowed;if(o)try{o({label:t,error:e})}catch(r){}(n.__hfDebug||n.__HYPERFRAMES_DEBUG)&&console.debug(`[hyperframes] ${t} swallowed:`,e)}var E=null;function h(t,e){if(E)try{E({source:"hf-preview",type:"analytics",event:t,properties:e??{}})}catch(n){w("runtime.analytics.site1",n)}}var l="data-hf-edit-base-x",p="data-hf-edit-base-y",f="data-hf-edit-original-translate",u=t=>{let e=parseFloat(t??"");return Number.isFinite(e)?e:0},$=t=>{let e=[],n=0,o="";for(let r of t.trim())r==="("&&(n+=1),r===")"&&(n=Math.max(0,n-1)),/\\s/.test(r)&&n===0?(o&&e.push(o),o=""):o+=r;return o&&e.push(o),e},k=/^-?(?:\\d+(?:\\.\\d+)?|\\.\\d+)px$/,_=(t,e)=>k.test(t)&&k.test(e)?`${parseFloat(t)+parseFloat(e)}px`:`calc(${t} + ${e})`,D=(t,e,n)=>{if(!t||t==="none")return`${e} ${n}`;let[o,r,i]=$(t);if(o===void 0)return`${e} ${n}`;if(r===void 0)return`${_(o,e)} ${n}`;let s=i===void 0?"":` ${i}`;return`${_(o,e)} ${_(r,n)}${s}`},L=t=>{try{t.ownerDocument.defaultView?.gsap?.getProperty?.(t,"x")}catch{}},M=t=>{let e=t.style.getPropertyValue("translate").trim();if(e)return e==="none"?"":e;try{let n=t.ownerDocument.defaultView,o=n?n.getComputedStyle(t).getPropertyValue("translate").trim():"";return o==="none"?"":o}catch{return""}},A=new WeakMap;function H(t,e){let n=A.get(t);if(!e?.force&&n!==void 0&&t.style.getPropertyValue("translate")!==n){h("position_edit_fold_skipped",{hfId:t.getAttribute("data-hf-id")});return}let o=u(t.getAttribute("data-x"))-u(t.getAttribute(l)),r=u(t.getAttribute("data-y"))-u(t.getAttribute(p));t.hasAttribute(f)||t.setAttribute(f,M(t)),n===void 0&&L(t);let i=t.getAttribute(f)??"",s=D(i,`${o}px`,`${r}px`);t.style.setProperty("translate",s),A.set(t,t.style.getPropertyValue("translate"))}function y(t,e){let n=t.querySelectorAll(`[${l}], [${p}]`),o=t.defaultView?.HTMLElement,r=0;for(let i=0;i{try{y(e.document,{force:!0})}catch{}},o=a=>typeof a=="function"&&!!a[T],r=a=>{try{Object.defineProperty(a,T,{value:!0})}catch{}},i=(a,P)=>{let d=a();if(typeof d!="function"||o(d))return;let m=function(...R){let x=d.apply(this,R);return n(),x};r(m),P(m),n()},s=()=>{i(()=>e.__hf?.seek,a=>{e.__hf&&(e.__hf.seek=a)}),i(()=>e.__player?.renderSeek,a=>{e.__player&&(e.__player.renderSeek=a)})};s();let c=120,S=e.setInterval(()=>{s(),c-=1,c<=0&&e.clearInterval(S)},50)}function b(){document.querySelector(`[${l}], [${p}]`)&&(y(document),v(window))}document.readyState==="loading"?document.addEventListener("DOMContentLoaded",b,{once:!0}):b();})();\n';
+
+/** Returns the pre-built position-edits render IIFE as a string constant. */
+export function getPositionEditsRenderScript(): string {
+ return POSITION_EDITS_RENDER_IIFE;
+}
diff --git a/packages/core/src/runtime/init.positionEdits.test.ts b/packages/core/src/runtime/init.positionEdits.test.ts
new file mode 100644
index 000000000..631aa9a29
--- /dev/null
+++ b/packages/core/src/runtime/init.positionEdits.test.ts
@@ -0,0 +1,24 @@
+import { describe, expect, it } from "vitest";
+import { installPositionEditsSeekReapply } from "./positionEdits";
+
+describe("init.ts per-seek position-edit parity", () => {
+ it("reapplies the position edit after renderSeek", () => {
+ document.body.innerHTML =
+ 'hi
';
+ const h1 = document.querySelector("h1");
+ if (!(h1 instanceof HTMLElement)) throw new Error("test element missing");
+
+ // @ts-expect-error test global
+ window.__player = {
+ renderSeek: () => h1.style.setProperty("translate", "none"),
+ };
+ installPositionEditsSeekReapply(window as Window & typeof globalThis);
+ // @ts-expect-error test global
+ window.__player.renderSeek(1);
+
+ expect(h1.style.getPropertyValue("translate")).toBe("20px 0px");
+ // @ts-expect-error test global
+ delete window.__player;
+ h1.remove();
+ });
+});
diff --git a/packages/core/src/runtime/init.ts b/packages/core/src/runtime/init.ts
index 618d815e2..38f1dfc58 100644
--- a/packages/core/src/runtime/init.ts
+++ b/packages/core/src/runtime/init.ts
@@ -29,7 +29,7 @@ import { createRuntimeStartTimeResolver } from "./startResolver";
import { createClipTree } from "./clipTree";
import { loadExternalCompositions, loadInlineTemplateCompositions } from "./compositionLoader";
import { applyCaptionOverrides } from "./captionOverrides";
-import { applyPositionEdits } from "./positionEdits";
+import { applyPositionEdits, installPositionEditsSeekReapply } from "./positionEdits";
import { applyVariableBindings } from "./applyVariableBindings";
import { createColorGradingRuntime, type RuntimeColorGradingApi } from "./colorGrading";
import { TransportClock } from "./clock";
@@ -2987,6 +2987,8 @@ export function initSandboxRuntimeModular(): void {
}
}
+ installPositionEditsSeekReapply(window as Window & typeof globalThis);
+
// Start the rAF tick loop
state.transportRafId = window.requestAnimationFrame(transportTick);
postTimeline();
diff --git a/packages/core/src/runtime/positionEdits.test.ts b/packages/core/src/runtime/positionEdits.test.ts
index 5354a3673..22cdfbde7 100644
--- a/packages/core/src/runtime/positionEdits.test.ts
+++ b/packages/core/src/runtime/positionEdits.test.ts
@@ -6,6 +6,7 @@ import {
applyPositionEditToElement,
applyPositionEdits,
composeTranslate,
+ installPositionEditsSeekReapply,
} from "./positionEdits";
function makeElement(attrs: Record, style = ""): HTMLElement {
@@ -174,3 +175,45 @@ describe("applyPositionEdits", () => {
el.remove();
});
});
+
+describe("installPositionEditsSeekReapply", () => {
+ it("wraps __player.renderSeek so each call reapplies position edits", () => {
+ const el = makeElement({ "data-x": "10", "data-y": "0", "data-hf-edit-base-x": "0" });
+ const calls: number[] = [];
+ // @ts-expect-error test global
+ window.__player = { renderSeek: (time: number) => calls.push(time) };
+
+ installPositionEditsSeekReapply(window as Window & typeof globalThis);
+ // @ts-expect-error test global
+ window.__player.renderSeek(1.5);
+
+ expect(calls).toEqual([1.5]);
+ expect(el.style.getPropertyValue("translate")).toBe("10px 0px");
+ // @ts-expect-error test global
+ delete window.__player;
+ el.remove();
+ });
+
+ it("is idempotent when installed twice", () => {
+ const el = makeElement({ "data-x": "5", "data-y": "0", "data-hf-edit-base-x": "0" });
+ const calls: number[] = [];
+ // @ts-expect-error test global
+ window.__player = { renderSeek: (time: number) => calls.push(time) };
+
+ installPositionEditsSeekReapply(window as Window & typeof globalThis);
+ installPositionEditsSeekReapply(window as Window & typeof globalThis);
+ // @ts-expect-error test global
+ window.__player.renderSeek(2);
+
+ expect(calls).toEqual([2]);
+ // @ts-expect-error test global
+ delete window.__player;
+ el.remove();
+ });
+
+ it("does not throw when neither seek global exists", () => {
+ expect(() =>
+ installPositionEditsSeekReapply(window as Window & typeof globalThis),
+ ).not.toThrow();
+ });
+});
diff --git a/packages/core/src/runtime/positionEdits.ts b/packages/core/src/runtime/positionEdits.ts
index 512fb6d25..49e3a64ea 100644
--- a/packages/core/src/runtime/positionEdits.ts
+++ b/packages/core/src/runtime/positionEdits.ts
@@ -154,7 +154,7 @@ export function applyPositionEditToElement(el: HTMLElement, opts?: { force?: boo
* Apply all pending position edits in the document. Returns the number of
* elements updated.
*/
-export function applyPositionEdits(doc: Document): number {
+export function applyPositionEdits(doc: Document, opts?: { force?: boolean }): number {
const marked = doc.querySelectorAll(`[${EDIT_BASE_X_ATTR}], [${EDIT_BASE_Y_ATTR}]`);
// Not `instanceof HTMLElement`: `doc` is frequently an iframe's document (the
// SDK's edit preview, a host embedding a composition), and its elements are
@@ -170,8 +170,80 @@ export function applyPositionEdits(doc: Document): number {
? el instanceof RealmHTMLElement
: typeof (el as HTMLElement).style?.setProperty === "function";
if (!isStylable) continue;
- applyPositionEditToElement(el as HTMLElement);
+ applyPositionEditToElement(el as HTMLElement, opts);
applied += 1;
}
return applied;
}
+
+const SEEK_REAPPLY_WRAPPED = "__hfPositionEditsSeekReapplyWrapped";
+
+type SeekWindow = Window &
+ typeof globalThis & {
+ __hf?: { seek?: (...args: unknown[]) => unknown };
+ __player?: { renderSeek?: (...args: unknown[]) => unknown };
+ };
+
+/** Reapply SDK position edits after every render seek, including late-bound seeks. */
+export function installPositionEditsSeekReapply(win: Window & typeof globalThis): void {
+ const target = win as SeekWindow;
+ const reapply = (): void => {
+ try {
+ applyPositionEdits(target.document, { force: true });
+ } catch {
+ // A position edit must never break the render seek path.
+ }
+ };
+
+ const isWrapped = (fn: unknown): fn is (...args: unknown[]) => unknown =>
+ typeof fn === "function" &&
+ Boolean((fn as { [SEEK_REAPPLY_WRAPPED]?: boolean })[SEEK_REAPPLY_WRAPPED]);
+
+ const markWrapped = (fn: (...args: unknown[]) => unknown): void => {
+ try {
+ Object.defineProperty(fn, SEEK_REAPPLY_WRAPPED, { value: true });
+ } catch {
+ // Frozen functions cannot be marked; the wrapper itself is still valid.
+ }
+ };
+
+ const wrapOne = (
+ get: () => unknown,
+ set: (fn: (...args: unknown[]) => unknown) => void,
+ ): void => {
+ const fn = get();
+ if (typeof fn !== "function") return;
+ if (isWrapped(fn)) return;
+ const wrapped = function (this: unknown, ...args: unknown[]): unknown {
+ const result = fn.apply(this, args);
+ reapply();
+ return result;
+ };
+ markWrapped(wrapped);
+ set(wrapped);
+ reapply();
+ };
+
+ const wrapAll = (): void => {
+ wrapOne(
+ () => target.__hf?.seek,
+ (fn) => {
+ if (target.__hf) target.__hf.seek = fn;
+ },
+ );
+ wrapOne(
+ () => target.__player?.renderSeek,
+ (fn) => {
+ if (target.__player) target.__player.renderSeek = fn;
+ },
+ );
+ };
+
+ wrapAll();
+ let remaining = 120;
+ const interval = target.setInterval(() => {
+ wrapAll();
+ remaining -= 1;
+ if (remaining <= 0) target.clearInterval(interval);
+ }, 50);
+}
diff --git a/packages/core/stubs/position-edits-render-entry.ts b/packages/core/stubs/position-edits-render-entry.ts
new file mode 100644
index 000000000..4dadc161e
--- /dev/null
+++ b/packages/core/stubs/position-edits-render-entry.ts
@@ -0,0 +1,20 @@
+import {
+ EDIT_BASE_X_ATTR,
+ EDIT_BASE_Y_ATTR,
+ applyPositionEdits,
+ installPositionEditsSeekReapply,
+} from "../src/runtime/positionEdits";
+
+function start(): void {
+ if (!document.querySelector(`[${EDIT_BASE_X_ATTR}], [${EDIT_BASE_Y_ATTR}]`)) {
+ return;
+ }
+ applyPositionEdits(document);
+ installPositionEditsSeekReapply(window);
+}
+
+if (document.readyState === "loading") {
+ document.addEventListener("DOMContentLoaded", start, { once: true });
+} else {
+ start();
+}
diff --git a/packages/producer/src/services/htmlCompiler.test.ts b/packages/producer/src/services/htmlCompiler.test.ts
index 5b41203a3..2fa6573dd 100644
--- a/packages/producer/src/services/htmlCompiler.test.ts
+++ b/packages/producer/src/services/htmlCompiler.test.ts
@@ -7,6 +7,7 @@ import { parseHTML } from "linkedom";
import {
collectExternalAssets,
compileForRender,
+ injectSdkPositionEditsRenderScript,
detectRenderModeHints,
detectShaderTransitionUsage,
detectThreeDTransformUsage,
@@ -19,6 +20,28 @@ import {
} from "./htmlCompiler.js";
import { validateNoSystemFonts } from "./render/planValidation.js";
+describe("injectSdkPositionEditsRenderScript", () => {
+ it("injects before Hi