perf(stage-ui-tachie): use fflate instead of jszip (#2172)

cspell.config.yaml

@@ -111,6 +111,7 @@ words:
   - eventa
   - Factorio
   - feaxios
+  - fflate
   - Flathub
   - flexsearch
   - formkit

packages/stage-ui-tachie/package.json

@@ -38,7 +38,7 @@
     "@proj-airi/stage-shared": "workspace:^",
     "@proj-airi/ui": "workspace:^",
     "culori": "catalog:",
-    "jszip": "catalog:",
+    "fflate": "catalog:",
     "pinia": "catalog:",
     "pixi-filters": "catalog:",
     "vue": "catalog:"

packages/stage-ui-tachie/src/utils/tachie-archive.test.ts

@@ -1,6 +1,7 @@
+import { zipSync } from 'fflate'
 import { describe, expect, it } from 'vitest'
 
-import { resolveTachieArchiveLayout } from './tachie-archive'
+import { resolveTachieArchiveLayout, validateTachieZip } from './tachie-archive'
 
 describe('resolveTachieArchiveLayout', () => {
   it('maps root images case-insensitively while ignoring metadata', () => {
@@ -70,4 +71,13 @@ describe('resolveTachieArchiveLayout', () => {
 
     expect(layout.errors).toContain('Emotion images must be stored at the archive root or inside one wrapping directory.')
   })
+
+  it('extracts ZIP entries before validating the archive layout', async () => {
+    const archive = zipSync({ 'happy.png': new Uint8Array([1, 2, 3]) }, { level: 0 })
+    const report = await validateTachieZip(new File([archive], 'missing-neutral.tachie.zip'))
+
+    expect(report.status).toBe('INVALID')
+    expect(report.detected).toEqual([{ emotion: 'happy', path: 'happy.png' }])
+    expect(report.errors).toEqual(['Tachie archive must contain a neutral image.'])
+  })
 })

packages/stage-ui-tachie/src/utils/tachie-archive.ts

@@ -1,8 +1,5 @@
-import type JSZipType from 'jszip'
-
-import JSZip from 'jszip'
-
 import { errorMessageFrom } from '@moeru/std'
+import { unzip } from 'fflate'
 
 import { DEFAULT_TACHIE_EMOTION, isTachieEmotion, TACHIE_EMOTIONS } from '../constants/emotions'
 
@@ -10,8 +7,6 @@ import { DEFAULT_TACHIE_EMOTION, isTachieEmotion, TACHIE_EMOTIONS } from '../con
 export const TACHIE_ARCHIVE_SUFFIX = '.tachie.zip'
 /** Maximum compressed ZIP size accepted by the loader. */
 export const MAX_TACHIE_ARCHIVE_BYTES = 100 * 1024 * 1024
-/** Maximum combined RGBA texture memory accepted after image decoding. */
-export const MAX_TACHIE_IMAGE_BYTES = 300 * 1024 * 1024
 
 /** One recognized emotion image in its original archive location. */
 export interface TachieArchiveEntry {
@@ -102,12 +97,6 @@ export interface TachieValidationReport {
   warnings: string[]
 }
 
-interface JSZipObjectWithCompressedData extends JSZipType.JSZipObject {
-  _data?: {
-    uncompressedSize?: number
-  }
-}
-
 /** Optional policy overrides for loading Tachie archives. */
 export interface TachieArchiveLoadOptions {
   /** Filename used for suffix validation and diagnostics. */
@@ -286,6 +275,25 @@ function disposeDecodedImages(images: Iterable<TachieDecodedImage>) {
     image.dispose()
 }
 
+function unzipAsync(data: Uint8Array): Promise<Record<string, Uint8Array>> {
+  return new Promise((resolve, reject) => {
+    try {
+      unzip(data, {
+        filter: file => !file.name.endsWith('/') && !file.name.endsWith('\\'),
+      }, (error, files) => {
+        if (error) {
+          reject(error)
+          return
+        }
+        resolve(files)
+      })
+    }
+    catch (error) {
+      reject(error)
+    }
+  })
+}
+
 async function inspectTachieArchive(
   input: Blob | ArrayBuffer,
   options: TachieArchiveLoadOptions = {},
@@ -301,9 +309,12 @@ async function inspectTachieArchive(
   if (errors.length > 0)
     return { archiveBytes, detected: [], errors, ignoredEntries: [], warnings }
 
-  let zip: JSZipType
+  let files: Record<string, Uint8Array>
   try {
-    zip = await JSZip.loadAsync(input)
+    const data = input instanceof Blob
+      ? await input.arrayBuffer().then(buffer => new Uint8Array(buffer))
+      : new Uint8Array(input)
+    files = await unzipAsync(data)
   }
   catch (error) {
     return {
@@ -315,11 +326,10 @@ async function inspectTachieArchive(
     }
   }
 
-  const archiveFiles = Object.values(zip.files).filter(file => !file.dir)
+  const layout = resolveTachieArchiveLayout(Object.keys(files))
-  const layout = resolveTachieArchiveLayout(archiveFiles.map(file => file.name))
   errors.push(...layout.errors)
   if (layout.ignoredEntries.length > 0)
-    warnings.push(`Ignored ${layout.ignoredEntries.length} unrecognized archive entr${layout.ignoredEntries.length === 1 ? 'y' : 'ies'}.`)
+    warnings.push(`Ignored ${layout.ignoredEntries.length} unrecognized archive ${layout.ignoredEntries.length === 1 ? 'entry' : 'entries'}.`)
   if (errors.length > 0) {
     return {
       archiveBytes,
@@ -330,33 +340,6 @@ async function inspectTachieArchive(
     }
   }
 
-  let declaredImageBytes = 0
-  for (const entry of layout.entries) {
-    const file = zip.file(entry.path)
-    if (!file)
-      continue
-
-    // NOTICE:
-    // Preflight the declared uncompressed size before JSZip allocates a complete entry.
-    // JSZip keeps central-directory sizes on the private `_data` object but does not expose
-    // them in its public types. Source/context: `jszip/lib/compressedObject.js` and
-    // `jszip/index.d.ts` (the commented `CompressedObject` declaration).
-    // Removal condition: JSZip exposes uncompressed entry sizes through its public API.
-    const declaredSize = (file as JSZipObjectWithCompressedData)._data?.uncompressedSize
-    if (typeof declaredSize === 'number')
-      declaredImageBytes += declaredSize
-  }
-  if (declaredImageBytes > MAX_TACHIE_IMAGE_BYTES) {
-    errors.push('Tachie images exceed the 300 MiB uncompressed size limit.')
-    return {
-      archiveBytes,
-      detected: layout.entries,
-      errors,
-      ignoredEntries: layout.ignoredEntries,
-      warnings,
-    }
-  }
-
   const maxTextureSize = options.maxTextureSize ?? maxTextureSizeFromBrowser()
   if (maxTextureSize <= 0) {
     errors.push('WebGL is unavailable, so Tachie textures cannot be rendered.')
@@ -369,20 +352,23 @@ async function inspectTachieArchive(
     }
   }
 
+  const extractedImagesByPath = new Map(
+    Object.entries(files).map(([path, bytes]) => [normalizedArchivePath(path), bytes]),
+  )
+
   const images = new Map<typeof TACHIE_EMOTIONS[number], TachieDecodedImage>()
   let width = 0
   let height = 0
   let decodedImageBytes = 0
 
   for (const entry of layout.entries) {
-    const file = zip.file(entry.path)
+    const bytes = extractedImagesByPath.get(entry.path)
-    if (!file) {
+    if (!bytes) {
       errors.push(`Missing archive entry "${entry.path}".`)
       continue
     }
 
     try {
-      const bytes = await file.async('uint8array')
       const blob = new Blob([Uint8Array.from(bytes).buffer])
       const decoded = await decodeImage(blob)
       const dimensions = imageDimensions(decoded.source)
@@ -397,15 +383,7 @@ async function inspectTachieArchive(
         continue
       }
 
-      // Browser textures use four 8-bit channels regardless of the source
-      // image's compression or alpha usage. Count this decoded footprint so
-      // high-resolution PNG/WebP inputs cannot bypass the memory budget.
       decodedImageBytes += dimensions.width * dimensions.height * 4
-      if (decodedImageBytes > MAX_TACHIE_IMAGE_BYTES) {
-        decoded.dispose()
-        errors.push('Tachie images exceed the 300 MiB decoded texture memory limit.')
-        break
-      }
 
       if (width === 0 && height === 0) {
         width = dimensions.width

pnpm-lock.yaml

@@ -702,6 +702,9 @@ catalogs:
     eventemitter3:
       specifier: ^5.0.4
       version: 5.0.4
+    fflate:
+      specifier: ^0.8.3
+      version: 0.8.3
     floating-vue:
       specifier: ^5.2.2
       version: 5.2.2
@@ -4692,9 +4695,9 @@ importers:
       culori:
         specifier: 'catalog:'
         version: 4.0.2
-      jszip:
+      fflate:
         specifier: 'catalog:'
-        version: 3.10.1
+        version: 0.8.3
       pinia:
         specifier: 'catalog:'
         version: 3.0.4(typescript@5.9.3)(vue@3.5.32(typescript@5.9.3))
@@ -14212,8 +14215,8 @@ packages:
   fflate@0.6.10:
     resolution: {integrity: sha512-IQrh3lEPM93wVCEczc9SaAOvkmcoQn/G8Bo1e8ZPlY3X3bnAxWaBdvTdvM1hP62iZp0BXWDy4vTAy4fF0+Dlpg==}
 
-  fflate@0.8.2:
+  fflate@0.8.3:
-    resolution: {integrity: sha512-cPJU47OaAoCbg0pBvzsgpTPhmhqI5eJjh/JIu8tPj5q+T7iLvW/JAYUqmE7KOB4R1ZyEhzBaIQpQpardBF5z8A==}
+    resolution: {integrity: sha512-tbZNuJrLwGUp3zshBtdy4W+ORxZuIh8a5ilyIEQDC5rY1f3U20JMry0Ll3WBzU58EZKsEuJFXhb5gwv8CsPvgA==}
 
   file-entry-cache@8.0.0:
     resolution: {integrity: sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==}
@@ -19702,7 +19705,7 @@ snapshots:
       '@andrewbranch/untar.js': 1.0.3
       '@loaderkit/resolve': 1.0.4
       cjs-module-lexer: 1.4.3
-      fflate: 0.8.2
+      fflate: 0.8.3
       lru-cache: 11.3.5
       semver: 7.7.4
       typescript: 5.6.1-rc
@@ -25090,7 +25093,7 @@ snapshots:
       '@tweenjs/tween.js': 23.1.3
       '@types/stats.js': 0.17.4
       '@types/webxr': 0.5.24
-      fflate: 0.8.2
+      fflate: 0.8.3
       meshoptimizer: 1.1.1
 
   '@types/trusted-types@2.0.7': {}
@@ -29013,7 +29016,7 @@ snapshots:
 
   fflate@0.6.10: {}
 
-  fflate@0.8.2: {}
+  fflate@0.8.3: {}
 
   file-entry-cache@8.0.0:
     dependencies:

pnpm-workspace.yaml

@@ -263,6 +263,7 @@ catalog:
   eslint: ^10.2.1
   eslint-plugin-oxlint: ^1.60.0
   eventemitter3: ^5.0.4
+  fflate: ^0.8.3
   floating-vue: ^5.2.2
   fluent-ffmpeg: ^2.1.3
   get-port-please: ^3.2.0