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feat(phaser-assets): add prepared pack delivery integration - #193
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Promote the acceptance-validated ZIP pack preparation and file supply rules from the private example into the package as the \`@mpgd/phaser-assets/delivery\` subpath (\`createPhaserPackDelivery\`): - The delivery manifest is validated and frozen once at creation; the catalog, verification basis and limits survive caller mutation. Options validate fail-fast (including resolveURL arity, timer ranges, the createWorker factory and WebCrypto availability), and artifact paths URL-encode each segment exactly once against a baseUrl or a custom resolver. - Zip packs stage per dependency closure under an explicit archive+expanded byte budget, checked for the whole closure before any request; archives download once and decode through the real application-deployed worker (#191), admitted only on a fully completed decode, with the whole-prepare deadline never restarting and the decoder receiving only the unspent remainder. Staging is deliberately sequential to keep the budget and deadline honest. - Files packs keep plain HTTP through the same source (declared-size streaming caps, timeout windows that end with the body, abort-reason forwarding, reader cleanup) and mixed manifests route each file by its pack's delivery kind. dispose() stops in-flight reads on every signal topology, not just AbortSignal.any environments. - Lifetimes stay separated: prepared handles return only their own stake (identity-guarded against restage races and dispose zeroing), open readers keep their bytes, and re-entering re-prepares from the network. Prepare is single-flight with a busy rejection. - Failures throw \`PhaserPackDeliveryError\` with stable codes (config, not-prepared, busy, budget, transport, integrity, cancelled, deadline, disposed) that preserve decoder statuses and distinguish a lying manifest from a transport-cap trip; there is no silent ZIP-to-files fallback. The archive digest is verified exactly once, inside the decoder. The example becomes a pure consumer: it fetches the manifest itself (with its own deadline and cache policy) and hands the parsed document to the public API; its private zipDelivery.ts is removed. Package tests cover catalog derivation, snapshot invariance, files-only no-ops, mixed routing, not-prepared/dispose/repeated release, reader lifetime separation, cancel and deadline cleanup, pre-network budget rejection, read-order independence, corrupt archives, URL encoding (literal %, #, ?, spaces, non-ASCII) and config validation; the browser acceptance now exercises the public API end to end.
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🧭 Changeset detectedMerging this PR will release the following updates: @mpgd/phaser-assets (npm) — minor version bumpMinor changes
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (3)
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe package adds ChangesPrepared pack delivery
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Sample as Asset-pack sample
participant Delivery as createPhaserPackDelivery
participant Origin as HTTP origin
participant Worker as Archive worker
participant Loader as Phaser asset loader
Sample->>Origin: fetch delivery manifest
Sample->>Delivery: create delivery from manifest
Loader->>Delivery: prepare pack dependency closure
Delivery->>Origin: fetch ZIP archive or file
Delivery->>Worker: decode ZIP archive
Worker-->>Delivery: completed decoded entries
Loader->>Delivery: open asset file
Delivery-->>Loader: staged bytes or HTTP response body
Merge Risk: ⚪ Minimal · up to The new delivery API and sample integration have no identified merge-blocking risk in the supplied current-head evidence. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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| const bridge = bridgeSignals(context.signal, shutdown.signal); | ||
| const combined = bridge.signal; | ||
| try { | ||
| transfer = await context.budgets.transfers.acquire(context.signal); |
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When a files-delivery read is queued behind the transfer budget, dispose() aborts combined but the permit acquisition is listening only to context.signal. If the loader remains live and the current permit holder is stalled, the read remains queued instead of settling with disposed, contradicting the API's promise that disposal stops in-flight reads. Pass combined to transfers.acquire so shutdown also cancels the queued wait.
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| entryBytes: expected.entries.reduce((max, entry) => Math.max(max, entry.bytes), 0), | ||
| totalExpandedBytes: expandedBytes, | ||
| entryCount: expected.entries.length, | ||
| maxPathLength: defaultArchiveWorkerLimits().maxPathLength, |
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A CLI-built ZIP may validly contain an entry path longer than 512 characters—the builder permits ZIP names up to 65,535 UTF-8 bytes and the manifest validator imposes no 512-character limit—but delivery always applies the decoder's conservative default. Such an otherwise valid generated pack is rejected during decoder preflight with a path-limit error, and callers have no delivery option to raise the bound. Use the maximum validated manifest path length here, or enforce the same limit in the producer contract.
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| // Decoder statuses and codes stay visible; the category follows the | ||
| // status so a decode deadline or cancel is not misreported as an | ||
| // integrity failure. | ||
| let code: PhaserPackDeliveryErrorCode = 'integrity'; |
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When createWorker throws because workers are unavailable or blocked by CSP, the bounded decoder returns an unsupported status, but this default leaves the public error code as integrity because only deadlines are remapped below. Applications branching on the stable delivery code will therefore report or retry this environment/configuration failure as if the archive were corrupt. Map unsupported to config (or another environment-specific public code) while preserving the decoder status in the message.
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| if (globalThis.crypto?.subtle === undefined) { | ||
| fail('config', 'Delivery requires WebCrypto (HTTPS or localhost) to verify zip archives'); |
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The derived catalog includes SHA-256 integrity metadata for files packs, so the stock loader necessarily calls crypto.subtle for those files as well. Because this availability check runs only when the manifest contains a ZIP pack, a files-only delivery can be created and prepared successfully on an insecure or unsupported origin, only for every loader acquisition to fail later with a generic loader error rather than the promised fail-fast delivery config error. Validate WebCrypto regardless of delivery kind.
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Four review findings on eeefb60 plus follow-up rounds: - dispose() also aborts transfer-permit waits (the acquire hears the combined signal) and the queued-read rejection maps to its stable category with file-request wording. - The decoder path bound is derived per job from that pack's own ZIP entry names (loop, not spread), so an unrelated files pack's long path cannot loosen the cutoff for zip decodes. - Worker-environment failures classify as configuration errors: a createWorker throw under CSP/no-worker conditions surfaces with code 'config' (the entries iterator rejects before job.result can settle, so the classification lives in the decode catch) with the pack id in the message. - WebCrypto is required whenever the manifest carries any file (the derived catalog always attaches SHA-256 integrity, including files-only deliveries); creation fails fast with 'config' on insecure origins instead of a loader error later. Regression coverage: files-only creation under a missing WebCrypto, worker-factory throw mapping to 'config', and a queued read settling 'disposed' when dispose lands first (signal-aware fake budget).
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3385a3d — all four findings fixed (round 2)
Regressions added: files-only creation under missing WebCrypto, worker-factory throw → Local gates after the fixes: 303 package tests, example check, full browser acceptance, workspace @codex review |
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| // job.result can settle, so worker-environment failures land here: | ||
| // a worker factory throwing under CSP/no-worker conditions is a | ||
| // configuration failure, not a corrupt archive. | ||
| if (error instanceof ZipDecodeError && error.code === 'unsupported') { |
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When the decoder itself observes its deadline before the outer prepare timer aborts—for example, a synchronous createWorker call blocks past remainingMs—the entries iterator rejects with ZipDecodeError code deadline while signal.aborted is still false. This branch recognizes only unsupported, so the deadline falls through as integrity, violating the stable error-code contract. Map decoder deadline errors to the public deadline code here as well.
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| transfer = await context.budgets.transfers.acquire(combined).catch( | ||
| (error: unknown): never => { | ||
| if (combined.aborted) { | ||
| if (context.signal.aborted) { |
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Fresh evidence after the queued-wait fix: if delivery.dispose() aborts combined first and the loader aborts context.signal later in the same synchronous turn, this rejection handler runs as a microtask after both aborts and reports cancelled solely because context.signal.aborted is now true. The combined signal still retains the earlier DeliveryDisposedAbort, so classify from combined.reason to preserve the promised first-abort-wins disposed result.
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| const url = resolveArtifact(role.path, { | ||
| packId: request.packId, revision: request.revision, | ||
| }); |
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When a custom resolveURL throws for a files-delivery artifact, this call occurs outside the fetchDeliveryBytes(...).catch(...) wrapper, and the outer catch merely resets readOnce and rethrows the raw value. Consumers can therefore receive an ordinary Error instead of the documented stable PhaserPackDeliveryError category; wrap resolver failures as a configuration or transport delivery error as the ZIP preparation path does.
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| if (!manifestResponse.ok) { | ||
| throw new Error(`Delivery manifest request failed with HTTP ${manifestResponse.status}`); | ||
| } | ||
| const manifestDocument: unknown = await manifestResponse.json().catch( |
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The replacement manifest-loading path calls response.json() directly, removing the deleted delivery helper's 4 MiB streaming cap. A fast misconfigured or compromised asset origin can now make the browser buffer and parse an arbitrarily large response within the four-second timeout, undermining the bounded-delivery example and potentially exhausting page memory before validation runs. Read the body through an explicit byte cap before parsing it.
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Second review round on #193, converged locally to zero findings: - Decoder-side deadlines classify as 'deadline' (the entries iterator rejects with the decoder's ZipDecodeError before job.result settles) and carry the pack id; worker-environment failures keep 'config'. - The permit-wait and fetch catches share one first-abort-wins classification via abortCategory with operation-labeled wording, so dispose-then-cancel races settle 'disposed' at both sites. - A throwing custom resolver wraps as a 'config' delivery error inside resolveArtifact — shared by the files and zip call sites — while a resolver deliberately throwing a delivery error keeps its category. - readCappedDeliveryBody is exported as the bounded body read for consumers fetching their own manifest: one loop (no duplicated adapters), every failure path cancels and releases the stream, the no-stream fallback fails closed unless an honest Content-Length fits the cap (a missing header maps to NaN), and an explicit reader: undefined selects that path by key presence. The example reads its manifest through the helper with manifest-specific overrun wording. - Error messages keep pack context and separators throughout. Regression coverage added: cap enforcement with stream cancellation, fail-closed no-stream reads, resolver throws mapping to 'config' for both delivery modes, and a decoder-deadline classification test with fake timers.
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c1258e9 — all four findings on 3385a3d fixed, plus follow-up rounds converged locally (round 3)
Also folded in from the local convergence rounds: shadowed-branch removal, message separators/pack context, and brace-style restorations. Local gates: 307 package tests, full browser acceptance, workspace @codex review |
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Inline comments:
In `@packages/phaser-assets/src/delivery.ts`:
- Around line 289-297: Update readCappedDeliveryBody to validate cap before
acquiring or reading the response body, requiring it to be a non-negative safe
integer and throwing a RangeError otherwise. Preserve the existing overrun
handling for valid cap values.
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examples/asset-packs/src/main.tspackages/phaser-assets/src/delivery.tspackages/phaser-assets/test/delivery.test.ts
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| (error) => { | ||
| if (signal.aborted) { | ||
| throw error; | ||
| } |
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When the per-request timer aborts controller first but the caller or delivery shutdown aborts signal before the fetch/body rejection handler runs, this check uses the outer signal's current state rather than the attempt controller's first abort reason. The downstream catch consequently reports cancelled, disposed, or deadline even though the request timeout won, breaking the stable first-cause classification for this race; retain a distinct timeout reason and classify from controller.signal.reason.
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| received += value.byteLength; | ||
| if (received > cap) { | ||
| throw new Error(overrun()); |
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Because this newly public helper never validates cap, a caller passing NaN or Infinity silently disables the streaming bound: received > cap is always false, so an arbitrarily large response is accumulated despite the API promising an explicit byte cap. Validate that the cap is a finite positive safe integer before reading or acquiring the stream.
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| if (!manifestResponse.ok) { | ||
| throw new Error(`Delivery manifest request failed with HTTP ${manifestResponse.status}`); | ||
| } |
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When the manifest origin returns a non-2xx response with a streaming or stalled body, this branch throws after receiving the headers without cancelling the body. The transfer can therefore continue and retain its connection until the four-second signal expires or the response is collected, and repeated retries can accumulate these abandoned requests; cancel the response body before surfacing the HTTP error.
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| return { | ||
| async read(): Promise<PhaserPackFileBody> { | ||
| if (closed) { | ||
| fail('config', 'Delivery file was already closed'); |
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If a ZIP file is opened while staging is live and delivery.dispose() runs before read(), this method still creates and returns a Blob from the retained stagedFile; unlike the files-delivery path, it never checks the shutdown state. The loader can therefore continue consuming staged bytes after an API call documented to stop everything and drop staging, so check the disposed state when reading an already-open ZIP file and surface the disposed category.
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Fourth review round on #193 plus local convergence: - The per-request timeout abort carries a sentinel reason consulted at every classification site — prepare, archive staging, the decode catch and both file-request catches — before any outer-signal branch, so a timeout that fires before a later caller/shutdown abort in the same turn keeps the 'transport' category (and the resource id in the message) on both fetch paths alike. - readCappedDeliveryBody validates its cap through the shared positiveInteger helper, and a manifest cap breach in the example keeps manifest-specific wording. - The example cancels abandoned non-2xx manifest bodies so their connections return to the pool. - Opened zip reads after dispose() reject with 'disposed' through the same assertLive gate as every other entry point. - Classification helpers are shared: one abortCategory with operation-labeled wording, one requestTimeoutError for the sentinel mapping, removing duplicated guards and drift-prone copies. Regression coverage: cap validation, disposed staged reads, and the timeout-then-abort race (hung response body, fake timers, caller abort landing after the request deadline).
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e766ce5 — all four findings on c1258e9 fixed (round 4)
Local convergence also folded in: Local gates: 310 package tests, full browser acceptance, workspace Note: the browser suite's files-mode transient-500 retry occasionally hits the loader's 5 s preparation timeout under heavy local load (load average 4–7; the loader and pack-fetch paths are untouched by this PR). CI's fresh runners passed this suite in every previous round; leaving CI as the arbiter. @codex review |
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Summary
Promotes the connection rules validated by the merged #192 acceptance into a small public API: the new
@mpgd/phaser-assets/deliverysubpath lets a game connect a CLI-built delivery manifest to the existing pack loader without touching ZIP internals or the worker protocol. Built on #188 (loader file source), #190 (build-packs + manifest) and #191 (bounded decoder + app-deployed worker).What is exported (and deliberately not)
Exported: manifest → catalog/file-mapping derivation, explicit zip preparation, prepared-file supply through the existing
PhaserPackFileSourcecontract, and prepare-handle/source lifetime management. Not exported: no new parser or worker protocol, no task framework, no global asset cache, no codec plugin system.Behavior
config) includingresolveURLarity, timer ranges, thecreateWorkerfactory and WebCrypto availability; artifact paths URL-encode each segment exactly once, so#,?, spaces and non-ASCII address the resource the static host serves (tested).completeddecode, one never-restarting whole-prepare deadline with the decoder receiving only the unspent remainder; mixed manifests route each file by its pack's delivery kind.prepared.release()returns only its own stake (identity-guarded against restage races and dispose zeroing); open readers keep their bytes; re-entry re-prepares from the network;dispose()stops in-flight reads on every signal topology (manual bridge whereAbortSignal.anyis absent, with listener teardown).PhaserPackDeliveryErrorwith stable codes (config,not-prepared,busy,budget,transport,integrity,cancelled,deadline,disposed) preserving decoder statuses in the message; overrun messages distinguish a lying manifest from a transport-cap trip; no silent ZIP-to-files fallback. The archive digest is verified exactly once — inside the feat(phaser-assets): add bounded ZIP pack decoding #191 decoder.Example conversion
examples/asset-packsis now a pure consumer: it fetches the manifest itself (own deadline and cache policy) and hands the parsed document to the public API;src/zipDelivery.tsis deleted. The browser acceptance suite runs the same happy/failure matrix against the public API.Verification run
pnpm --dir packages/phaser-assets test— 300 passed (14 new delivery tests: catalog derivation, snapshot invariance, files-only no-op without worker creation, mixed routing, not-prepared/dispose/repeated release, reader lifetime past handle release, cancel/deadline cleanup with staging reclaimed, pre-network budget rejection, read-order independence, corrupt archive integrity, URL encoding, config validation)pnpm --dir examples/asset-packs test:browser— full suite incl. ZIP acceptance on the public API (repeat runs)pnpm build:packages,pnpm smoke:phaser-assets-archive-decode,pnpm check,pnpm validate:public— passed@mpgd/phaser-assets, installed into a clean temp project, imported/deliveryfrom the shipped dist and exercised config validation +error.nameocrreview converged to 0 findings (13 rounds)Changeset
npm/@mpgd/phaser-assets: minor— new public subpath, no breaking change to existing exports.Untested environments (documented)
Multi-loader/multi-tab sharing, persistent caching and prefetch stay out of scope for this first version; the delivery requires a browser-like environment (fetch, Blob,
crypto.subtle).Summary by CodeRabbit
New Features
@mpgd/phaser-assets/deliverypackage entry point.Documentation
Examples