// @effect-diagnostics nodeBuiltinImport:off - Regression coverage compares shipped CSS with the sidebar width contract.import * as NodeFS from "node:fs"; import { describe, expect, it } from "vite-plus/test"; import {  resolveInitialThreadSidebarWidth,  THREAD_MAIN_CONTENT_MIN_WIDTH,  THREAD_SIDEBAR_DEFAULT_WIDTH,  THREAD_SIDEBAR_MIN_WIDTH,} from "./threadSidebarWidth"; describe("thread sidebar width", () => {  it("uses the default width when no preference is stored", () => {    expect(resolveInitialThreadSidebarWidth(null, 1200)).toBe(THREAD_SIDEBAR_DEFAULT_WIDTH);  });   it("uses a stored width in the initial render", () => {    expect(resolveInitialThreadSidebarWidth(360, 1200)).toBe(360);  });   it("clamps a stored width to the sidebar minimum", () => {    expect(resolveInitialThreadSidebarWidth(120, 1200)).toBe(THREAD_SIDEBAR_MIN_WIDTH);  });   it("leaves enough room for the main content on a smaller window", () => {    const viewportWidth = 1000;     expect(resolveInitialThreadSidebarWidth(900, viewportWidth)).toBe(      viewportWidth - THREAD_MAIN_CONTENT_MIN_WIDTH,    );  });   it("keeps the sidebar minimum when the whole layout is narrower than its minimums", () => {    expect(resolveInitialThreadSidebarWidth(900, 700)).toBe(THREAD_SIDEBAR_MIN_WIDTH);  });   it("shows the desktop wordmark across the sidebar's full legal width range", () => {    const sidebarStyles = NodeFS.readFileSync(new URL("../index.css", import.meta.url), "utf8");    const desktopHeaderStyles = sidebarStyles.slice(      sidebarStyles.indexOf("@media (min-width: 48rem)"),      sidebarStyles.indexOf("/* Stage-channel sidebar art"),    );    const stageLabelThreshold = desktopHeaderStyles.match(      /@container sidebar-header \(min-width: ([\d.]+)rem\) \{\s*\.sidebar-brand-stage \{\s*display: inline-flex;/,    )?.[1];     expect(sidebarStyles).toMatch(/\.sidebar-brand \{\s*display: none;/);    expect(desktopHeaderStyles).toMatch(      /@media \(min-width: 48rem\) \{\s*\.sidebar-brand \{\s*display: flex;/,    );    expect(THREAD_SIDEBAR_MIN_WIDTH).toBe(13 * 16);    expect(Number(stageLabelThreshold) * 16).toBeGreaterThan(THREAD_SIDEBAR_MIN_WIDTH);  });});