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iptvnator/apps/electron-backend-e2e/project.json
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4grayandClaude Fable 5.1 e29f36426b perf(tooling): compositing probe, report command and route-wide clip-mask guard (#1858)
* perf(tooling): compositing probe, report command and route-wide clip-mask guard

Make the instrument that found the dashboard's clip masks part of the
repository: `src/performance/compositing-probe.ts` reads the layer tree
over CDP (bounds in device pixels, compositing reasons and owner nodes,
waiting for Blink's layer debug info), classifies synthesized clip masks
(no owner node and no compositing reason) and reads the renderer's
`cc/tile_memory` from a memory-infra dump. `pnpm run perf:compositing`
seeds one profile against the Xtream mock on a dedicated port, serves the
artwork from memory, fixes the window at 1600x1000 and records tile and
image memory, layer counts, the largest layers, masks and tile warnings
for Live TV, the movie and series details, the dashboard (idle,
crossfade, scrolled) and settings into
dist/performance/compositing/<timestamp>/summary.json and a console
table. Both helpers have node:test coverage in the performance harness.

The dashboard-only compositing E2E becomes `compositing.e2e.ts` and
guards Live TV, a movie detail, a series detail and the dashboard in one
launch, with the backdrop-filtered controls confirmed as composited
layers on the dashboard and the movie detail.

The rule now lives where it triggers: a Rendering Cost section in the
theme/style skill, a validation line in the UI design skill, a context
map row, and a Compositing budget section in the performance journeys
contract (budget, mask mechanism, instruments, why megabytes are
evidence rather than a ratchet). Validation map and README mention the
command.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* perf(tooling): sample the dashboard idle reading with rotation paused

The hero advances after 8 s, so a 9 s wait sampled the next slide one
second into its zoom (backdrop scale 1.116 instead of 1.1, the previous
slide's tiles still pooled): 224 MB read as idle, 122 MB with rotation
paused and the zoom and tile pool settled. The warning delta and its
checkpoint are now taken at one boundary after the sampling, so a
"tile memory limits exceeded" line logged while the layers or the dump
are read counts for that route instead of for none. The report's test
artifacts go under dist/test-results like the other configs'.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* perf(tooling): retry a memory dump that carries no renderer tile memory

One reading of seven came back without `cc/tile_memory`: the dump's
trace events reach the buffer shortly after the request resolves, and
a process can skip a dump it is busy for. The capture now waits briefly
before ending the trace and retries up to three times before a reading
stays null.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* perf(tooling): run the compositing report with motion enabled

With the OS set to reduced motion the hero neither rotates nor renders
its pause button, so the report's click timed out before the summary was
written. The report now emulates `prefers-reduced-motion: no-preference`,
which also keeps the idle and crossfade readings on the same animation
set on every machine.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* perf(tooling): sample the crossfade frozen, count split stderr lines, drop stale layer samples

Review findings on the pushed head, plus the CI failure:

- A layer that vanished between the LayerTree snapshot and its reasons
  query was kept with empty reasons; without an owner node it would pass
  for a synthesized mask. Such a snapshot is now discarded and retaken.
- The crossfade reading sampled layers, owners and memory across the
  700 ms fade, so the row depended on how long the sampling took. The
  page's animations are frozen 300 ms into the fade while the reading is
  taken, resumed afterwards, and the incoming slide's zoom is allowed to
  finish before the scrolled reading.
- A stderr chunk can end mid-line; the warning counter now keeps the
  unfinished line for the next chunk.
- The mock server's launch spec lists the new Playwright config.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
2026-10-09 21:34:57 +02:00

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JSON

{
"name": "electron-backend-e2e",
"$schema": "../../node_modules/nx/schemas/project-schema.json",
"projectType": "application",
"sourceRoot": "apps/electron-backend-e2e/src",
"implicitDependencies": [
"electron-backend",
"stalker-mock-server",
"xtream-mock-server"
],
"targets": {
"e2e": {
"dependsOn": ["electron-backend:build-e2e"]
},
"test-performance-harness": {
"executor": "nx:run-commands",
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "tsx --test \"src/performance/*.spec.ts\""
}
},
"benchmark-m3u-refresh-cancellation": {
"dependsOn": ["electron-backend:build-performance"],
"executor": "nx:run-commands",
"cache": false,
"parallelism": false,
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "playwright test --config=playwright.performance.config.ts src/m3u-refresh-cancellation.performance.ts"
}
},
"benchmark-m3u-import": {
"dependsOn": ["electron-backend:build-performance"],
"executor": "nx:run-commands",
"cache": false,
"parallelism": false,
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "playwright test --config=playwright.performance.config.ts src/m3u-import.performance.ts"
}
},
"benchmark-xtream": {
"dependsOn": ["electron-backend:build-performance"],
"executor": "nx:run-commands",
"cache": false,
"parallelism": false,
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "playwright test --config=playwright.xtream-performance.config.ts src/xtream.performance.ts"
}
},
"benchmark-charset-parse": {
"executor": "nx:run-commands",
"cache": false,
"parallelism": false,
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "tsx --expose-gc --tsconfig tsconfig.json src/performance/charset-parse.benchmark.ts"
}
},
"journeys": {
"dependsOn": ["electron-backend:build-performance"],
"executor": "nx:run-commands",
"cache": false,
"parallelism": false,
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "playwright test --config=playwright.journeys.config.ts"
}
},
"compositing-report": {
"dependsOn": ["electron-backend:build-e2e"],
"executor": "nx:run-commands",
"cache": false,
"parallelism": false,
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "playwright test --config=playwright.compositing.config.ts"
}
},
"packaged-frame-copy-smoke": {
"dependsOn": ["test-packaged-frame-copy-fixtures"],
"executor": "nx:run-commands",
"cache": false,
"outputs": [
"{workspaceRoot}/dist/playwright-report/electron-backend-e2e/packaged-frame-copy-smoke",
"{workspaceRoot}/dist/test-results/electron-backend-e2e/packaged-frame-copy-smoke"
],
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "playwright test --config=playwright.packaged.config.ts src/embedded-mpv-frame-copy-packaged.e2e.ts"
}
},
"test-packaged-frame-copy-fixtures": {
"executor": "nx:run-commands",
"options": {
"cwd": "apps/electron-backend-e2e",
"command": "tsx --test src/embedded-mpv-frame-copy-packaged-fixtures.spec.ts"
}
},
"lint": {
"executor": "@nx/eslint:lint"
}
},
"tags": ["scope:e2e", "domain:electron-main", "type:e2e"]
}