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5a42d3706a
An instrument, not a gate. Seeds a busy channel against the mock bridge and measures the main-thread cost the headless correctness suite cannot feel. Two measurements: - Fast-wheel scroll of the bounded ~200-row window: compositor-cheap (~0.2ms layout + 1.3ms recalc over a 241-frame, 12k-px burst). - Prepend re-render cost while scrolled up: ~9-13ms main-thread tick, attributable to the O(rendered-rows) parent walk (videoReviewContext rebuild + day-group boundaries + element construction), NOT layout and NOT leaf-row reconciliation (MessageRow memo bails correctly). Anchor holds at 0px drift on this path. Scope limit: measures Chromium reconciliation, not the WKWebView compositor feel — that remains the real-Tauri macOS pass. Run: pnpm build && npx playwright test --config=playwright.perf.config.ts Co-authored-by: Tyler Longwell <tlongwell@squareup.com> Signed-off-by: Tyler Longwell <tlongwell@squareup.com>
24 lines
518 B
TypeScript
24 lines
518 B
TypeScript
import { defineConfig, devices } from "@playwright/test";
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export default defineConfig({
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testDir: "./tests/e2e",
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timeout: 60_000,
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retries: 0,
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workers: 1,
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reporter: [["list"]],
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use: { baseURL: "http://127.0.0.1:4173" },
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projects: [
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{
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name: "perf",
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testMatch: ["**/*.perf.ts"],
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use: { ...devices["Desktop Chrome"] },
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},
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],
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webServer: {
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command: "python3 -m http.server 4173 -d dist",
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cwd: ".",
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reuseExistingServer: true,
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url: "http://127.0.0.1:4173",
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},
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});
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