feat(storage-*): add useCompositePrefixes option and fix client upload prefix handling

[JarrodMFlesch]

Summary

• Adds useCompositePrefixes option to all storage adapters (S3, Azure, GCS, R2, Vercel Blob)
• Fixes client uploads ignoring document prefix (previously only server uploads respected data.prefix)
• Adds centralized getFileKey utility for consistent path computation across adapters
• Documents prefix behavior and composition

Bug Fix

Client uploads previously ignored document prefix entirely:

// Old generateSignedURL - only used collection prefix
const prefix = collectionS3Config.prefix || ''
const fileKey = path.posix.join(prefix, filename)

Now client and server uploads both use getFileKey with document prefix support.

New Feature

With useCompositePrefixes: true, prefixes combine instead of override:

Mode	Collection Prefix	Doc Prefix	Result
false (default)	media-folder	user-123	user-123/file.jpg
true	media-folder	user-123	media-folder/user-123/file.jpg

Test plan

• Unit tests for getFileKey utility (12 tests)
• Integration tests verify composite prefix paths
• Client uploads now respect document prefix

[github-actions]

📦 esbuild Bundle Analysis for payload

This analysis was generated by esbuild-bundle-analyzer. 🤖

Meta File	Out File	Size (raw)	Note
packages/next/meta_index.json	esbuild/index.js	984.32 KB	✅ No change
packages/payload/meta_index.json	esbuild/index.js	1.38 MB	✅ No change
packages/payload/meta_shared.json	esbuild/exports/shared.js	191.31 KB	✅ No change
packages/richtext-lexical/meta_client.json	esbuild/exports/client_optimized/index.js	280.56 KB	✅ No change
packages/ui/meta_client.json	esbuild/exports/client_optimized/index.js	1.18 MB	⚠️ +108 B (+0.0%)
packages/ui/meta_shared.json	esbuild/exports/shared_optimized/index.js	16.32 KB	✅ No change

Largest paths

These visualization shows top 20 largest paths in the bundle.

Meta file: packages/next/meta_index.json, Out file: esbuild/index.js

Path	Size
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dist/views/Version	${{\color{Goldenrod}{ █▎ }}}$ 5.3%, 51.49 KB
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dist/views/Document	${{\color{Goldenrod}{ ▍ }}}$ 1.7%, 16.59 KB
dist/views/List	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 11.38 KB
dist/views/Root	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 9.03 KB
dist/views/Versions	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 6.17 KB
dist/views/API	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 6.13 KB
dist/elements/Nav	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 5.96 KB
dist/views/Account	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 5.55 KB
dist/elements/DocumentHeader	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 4.81 KB
dist/views/Login	${{\color{Goldenrod}{ }}}$ 0.4%, 4.40 KB
dist/layouts/Root	${{\color{Goldenrod}{ }}}$ 0.3%, 3.18 KB
dist/views/ForgotPassword	${{\color{Goldenrod}{ }}}$ 0.3%, 3.13 KB
dist/views/CreateFirstUser	${{\color{Goldenrod}{ }}}$ 0.3%, 2.81 KB
dist/templates/Default	${{\color{Goldenrod}{ }}}$ 0.3%, 2.64 KB
dist/views/BrowseByFolder	${{\color{Goldenrod}{ }}}$ 0.3%, 2.61 KB
dist/views/CollectionFolders	${{\color{Goldenrod}{ }}}$ 0.2%, 2.44 KB
dist/views/ResetPassword	${{\color{Goldenrod}{ }}}$ 0.2%, 2.40 KB
dist/views/Logout	${{\color{Goldenrod}{ }}}$ 0.2%, 1.94 KB
(other)	${{\color{Goldenrod}{ ████▍ }}}$ 17.6%, 172.01 KB

Meta file: packages/payload/meta_index.json, Out file: esbuild/index.js

Path	Size
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dist/collections/operations	${{\color{Goldenrod}{ ▋ }}}$ 2.9%, 39.93 KB
dist/versions/migrations	${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 18.50 KB
dist/auth/operations	${{\color{Goldenrod}{ ▎ }}}$ 1.1%, 15.63 KB
dist/fields/config	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 14.16 KB
dist/globals/operations	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 13.28 KB
dist/utilities/configToJSONSchema.js	${{\color{Goldenrod}{ ▎ }}}$ 1.0%, 13.13 KB
dist/queues/operations	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 12.69 KB
dist/fields/validations.js	${{\color{Goldenrod}{ ▏ }}}$ 0.8%, 10.54 KB
dist/bin/generateImportMap	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.91 KB
dist/collections/config	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.37 KB
dist/config/orderable	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 8.00 KB
dist/index.js	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.69 KB
dist/uploads/fetchAPI-multipart	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 7.67 KB
dist/database/migrations	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 7.54 KB
dist/config/sanitize.js	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 6.26 KB
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Meta file: packages/payload/meta_shared.json, Out file: esbuild/exports/shared.js

Path	Size
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dist/utilities/getVersionsConfig.js	${{\color{Goldenrod}{ ▏ }}}$ 0.6%, 1.04 KB
dist/utilities/flattenAllFields.js	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 943 B
dist/folders/utils	${{\color{Goldenrod}{ ▏ }}}$ 0.5%, 916 B
dist/utilities/unflatten.js	${{\color{Goldenrod}{ }}}$ 0.4%, 779 B
dist/utilities/sanitizeUserDataForEmail.js	${{\color{Goldenrod}{ }}}$ 0.4%, 713 B
dist/utilities/getFieldPermissions.js	${{\color{Goldenrod}{ }}}$ 0.3%, 651 B
dist/collections/config	${{\color{Goldenrod}{ }}}$ 0.3%, 570 B
dist/bin/generateImportMap	${{\color{Goldenrod}{ }}}$ 0.3%, 561 B
dist/auth/sessions.js	${{\color{Goldenrod}{ }}}$ 0.3%, 525 B
dist/fields/getFieldPaths.js	${{\color{Goldenrod}{ }}}$ 0.3%, 485 B
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dist/utilities/getSafeRedirect.js	${{\color{Goldenrod}{ }}}$ 0.2%, 423 B
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Meta file: packages/richtext-lexical/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Path	Size
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dist/features/link	${{\color{Goldenrod}{ █▋ }}}$ 6.6%, 18.24 KB
dist/features/toolbars	${{\color{Goldenrod}{ █▍ }}}$ 5.8%, 16.08 KB
dist/features/upload	${{\color{Goldenrod}{ █▎ }}}$ 5.0%, 13.77 KB
dist/features/textState	${{\color{Goldenrod}{ █ }}}$ 4.0%, 11.08 KB
dist/features/relationship	${{\color{Goldenrod}{ ▊ }}}$ 3.3%, 9.03 KB
dist/lexical/utils	${{\color{Goldenrod}{ ▊ }}}$ 3.1%, 8.49 KB
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dist/utilities/fieldsDrawer	${{\color{Goldenrod}{ ▋ }}}$ 2.6%, 7.15 KB
dist/features/converters	${{\color{Goldenrod}{ ▋ }}}$ 2.5%, 7.05 KB
dist/lexical/config	${{\color{Goldenrod}{ ▍ }}}$ 1.8%, 5.08 KB
dist/features/lists	${{\color{Goldenrod}{ ▍ }}}$ 1.8%, 5.00 KB
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dist/lexical/LexicalEditor.js	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 3.22 KB
dist/lexical/theme	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 2.62 KB
dist/field/Field.js	${{\color{Goldenrod}{ ▏ }}}$ 0.9%, 2.59 KB
(other)	${{\color{Goldenrod}{ █████████████████████▊ }}}$ 87.2%, 241.93 KB

Meta file: packages/ui/meta_client.json, Out file: esbuild/exports/client_optimized/index.js

Path	Size
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dist/elements/FolderView	${{\color{Goldenrod}{ ▋ }}}$ 2.5%, 29.37 KB
dist/elements/BulkUpload	${{\color{Goldenrod}{ ▌ }}}$ 2.4%, 27.86 KB
dist/elements/WhereBuilder	${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 17.38 KB
dist/views/Edit	${{\color{Goldenrod}{ ▍ }}}$ 1.5%, 17.30 KB
dist/forms/Form	${{\color{Goldenrod}{ ▎ }}}$ 1.4%, 15.92 KB
dist/fields/Relationship	${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 15.78 KB
dist/elements/Table	${{\color{Goldenrod}{ ▎ }}}$ 1.3%, 15.77 KB
dist/fields/Upload	${{\color{Goldenrod}{ ▎ }}}$ 1.2%, 14.24 KB
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dist/providers/Folders	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 8.47 KB
dist/elements/HTMLDiff	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 8.38 KB
dist/elements/ListHeader	${{\color{Goldenrod}{ ▏ }}}$ 0.7%, 7.99 KB
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Meta file: packages/ui/meta_shared.json, Out file: esbuild/exports/shared_optimized/index.js

Path	Size
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dist/utilities/getVisibleEntities.js	${{\color{Goldenrod}{ ▌ }}}$ 2.1%, 329 B
dist/utilities/getNavGroups.js	${{\color{Goldenrod}{ ▍ }}}$ 1.9%, 301 B
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(other)	${{\color{Goldenrod}{ ████████████████████ }}}$ 80.0%, 12.51 KB

Details

Next to the size is how much the size has increased or decreased compared with the base branch of this PR.

• ‼️: Size increased by 20% or more. Special attention should be given to this.
• ⚠️: Size increased in acceptable range (lower than 20%).
• ✅: No change or even downsized.
• 🗑️: The out file is deleted: not found in base branch.
• 🆕: The out file is newly found: will be added to base branch.

[github-actions]

🚀 This is included in version v3.83.0