mirror of
https://github.com/Memo-2023/mana-monorepo.git
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3b85d7d3d2
scripts/audit-bundle.mjs reads `.svelte-kit/output/client/_app/immutable`
after a prod build and reports:
- Total size + category breakdown (entry / nodes / chunks / workers /
assets).
- Top N JS files with content heuristics (transformers.js, zxcvbn,
tiptap, pdf-lib, swissqrbill, rrule, suncalc, Phosphor icon paths,
Vite __vite__mapDeps metadata, etc).
- Route mapping for `nodes/*.js` by parsing the server manifest's
`leaf:` entries, so node 118 is identified as /(app)/invoices/[id].
- ⚠ flag on chunks/ ≥ 200 KB (shared, potentially eager).
Current snapshot (docs/optimizable/bundle-analysis.md):
entry 92 KB | nodes 2.77 MB | chunks 5.59 MB
workers 22.3 MB (ONNX WASM, lazy) | total 31.8 MB
Already healthy:
- 92 KB entry (no critical-path bloat).
- 22 MB transformers.js WASM is worker-scoped — only fetched on first
/llm-test or memoro voice use.
- zxcvbn (1.25 MB combined dict + keyboard graphs) correctly behind a
dynamic import in PasswordStrength.svelte.
Follow-up opportunities logged:
1. /invoices/[id] = 534 KB — split swissqrbill + pdf-lib via dynamic
import.
2. @mana/shared-icons = 317 + 149 KB SVG path chunks — migrate to
tree-shakable per-icon imports or lazy-load.
3. Root (app) layout = 260 KB — check for module bleed into shared
shell.
Report-only. Run with `pnpm run audit:bundle`.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
91 lines
4.1 KiB
Markdown
91 lines
4.1 KiB
Markdown
# Bundle Analysis
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**Snapshot 2026-04-22.** Run `pnpm run audit:bundle` after any `pnpm --filter @mana/web build` for live numbers.
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## Snapshot
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| Category | Size | % | Notes |
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| entry | 92 KB | 0% | app.js + start.js — first JS a cold browser loads |
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| nodes | 2.77 MB | 9% | per-route layout/page bundles (230 files) |
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| chunks | 5.59 MB | 18% | shared code-split modules (711 files) |
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| workers | 22.31 MB | 70% | transformers.js ONNX WASM — lazy until LLM/STT opened |
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| assets | 1.04 MB | 3% | CSS, fonts, images |
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| **total** | **31.80 MB** | | 1147 files |
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Entry is tiny (92 KB). That's healthy. The 22 MB in `workers/` is
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`ort-wasm-simd-threaded.asyncify-*.wasm` — the ONNX Runtime for
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transformers.js. It's only fetched when the browser actually
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instantiates the Web Worker (first use of `@mana/local-llm` or
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`@mana/local-stt`). Most users never hit it.
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## Biggest shared chunks
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Top entries in `chunks/` ≥ 200 KB, with what's actually inside:
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| Size | File | Content | Verdict |
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| 797 KB | SDMVbHi1 | `@zxcvbn-ts/language-de` German dictionary | ✓ **lazy** — dynamic import in `PasswordStrength.svelte`, only on register / recovery |
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| 454 KB | bdamX4EN | `@zxcvbn-ts/language-common` keyboard adjacency graphs | ✓ **lazy** — same import path |
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| 317 KB | DtX-t1si | `@mana/shared-icons` (Phosphor SVG paths) | ⚠ **partly eager** — imported by many routes; see notes |
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| 220 KB | BbeX9yAb | Vite `__vite__mapDeps` import-graph | ✓ **metadata only**, not real code |
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| 162 KB | Bqmpszdn | (unknown) | below threshold |
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## Biggest route bundles
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Routes loaded per navigation (not eagerly):
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| Size | Route | Note |
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| 534 KB | `/(app)/invoices/[id]` | **heaviest route.** Likely swissqrbill + pdf-lib. Investigate — could split the QR-bill generator behind `await import()` so preview/list pages stay small. |
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| 380 KB | `/(app)/broadcasts/[id]/edit` | Tiptap editor — unavoidable, tiptap is ~250 KB baseline |
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| 260 KB | node 2 (root `(app)` layout) | All app-wide chrome: shell, stores, auth guard |
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| 95 KB | `/(app)/calendar` | Acceptable; rrule is shared |
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| 85 KB | `/(app)/todo` | Acceptable |
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## Priority improvements
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1. **`/invoices/[id]` code-split** — 534 KB is large. `swissqrbill`
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and `pdf-lib` are probably both eagerly imported. Wrap the PDF/QR
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generation path with `await import('swissqrbill')` so the route
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bundle drops to ~150 KB for the list/display case. Real win for
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Swiss-bill users on 3G / slow laptops.
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2. **`@mana/shared-icons` chunking** — 317 + 149 KB of Phosphor SVG
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paths across two chunks. Phosphor doesn't tree-shake well because
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its icons are named exports of a single module. Either:
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- migrate to tree-shakable per-icon imports, OR
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- lazy-load rarely-used icons in the module that imports them
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instead of the shared chunk.
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3. **Root `(app)` layout (260 KB)** — on the high side for "just the
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shell". Investigate whether any module-specific stores / AI pipeline
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bits are leaking into the shared layout when they could be
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route-scoped.
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## What's already good
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- Entry bundle is 92 KB — no bloat in the critical path.
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- 22 MB of WASM (transformers.js) is correctly behind Web Workers —
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cold visitors don't pay for it.
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- zxcvbn (1.25 MB German dict + keyboard graphs) is correctly behind a
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dynamic import in PasswordStrength.svelte — only register / recovery
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/ password-change surfaces load it.
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- Route-level code-splitting is working: 230 separate route bundles,
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median ~12 KB.
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## Usage
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```bash
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pnpm --filter @mana/web build # prerequisite
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pnpm run audit:bundle # full report
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pnpm run audit:bundle --top 30 # show top N chunks
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pnpm run audit:bundle --summary # category totals only
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```
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Heuristic rules: chunks in `chunks/` with ≥ 200 KB get a ⚠ flag.
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Route bundles (`nodes/`) and worker bundles (`workers/`) are
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always-lazy and don't get flagged. The content-hint regex knows about
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transformers.js, zxcvbn, tiptap, pdf-lib, swissqrbill, rrule, suncalc,
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dexie, marked, pako, date-fns, zod, svelte-dnd-action, svelte-i18n,
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WASM, Phosphor icons, and Vite's own mapDeps metadata.
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