DanielWalnut 459dd78707
perf(frontend): bound delivery, bundles, and long-running UI work (#4622)
* docs: design frontend performance remediation

* docs: plan frontend performance remediation

* test(frontend): add route asset performance budgets

* perf(nginx): compress textual responses safely

* perf(frontend): lazy load case study media

* perf(frontend): bound static demo file tracing

* perf(frontend): restore static locale boundaries

* perf(frontend): defer closed workspace panels

* perf(frontend): split editors and deduplicate highlighting

* perf(frontend): index incremental message derivation

* perf(frontend): stabilize paged history cache policy

* perf(frontend): bound streaming markdown renders

* perf(frontend): virtualize message history

* perf(frontend): bound and virtualize chat lists

* perf(frontend): suspend inactive decorative animation

* perf(browser): stream latest frames as binary

* perf(artifacts): stream bounded text previews

* docs: finalize performance runtime boundaries

* style(backend): apply test formatting

* fix(frontend): keep translation functions client-side

* perf(frontend): defer decorative animation bundles

* test(frontend): lock optimized route budgets

* fix: harden frontend performance boundaries

* test(frontend): update i18n provider fixture

* fix(frontend): preserve sidebar pagination position

* style(backend): format artifact range test
2026-08-01 22:19:59 +08:00

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TypeScript

import { describe, expect, it, rs } from "@rstest/core";
import { render, screen } from "@testing-library/react";
rs.mock("shiki", () => ({
codeToHtml: rs.fn(async () => {
throw new Error("highlighter unavailable");
}),
}));
describe("CodeBlock", () => {
it("shows raw code while the async highlighter is unavailable", async () => {
const { CodeBlock } = await import("@/components/ai-elements/code-block");
render(<CodeBlock code="const immediate = true" language="typescript" />);
expect(screen.getByText("const immediate = true")).toBeTruthy();
});
});