fix(eve): isolate config for duplicate extension mounts

[vercel-gh-bot-2]

Mounting the same extension package more than once now keeps each mount's validated config isolated by its mount module path.

Why

Extension config was keyed by package namespace. Two mounts of one package therefore shared one slot, and the last evaluated mount replaced the first mount's config. The regression scenario mounts one extension twice with first and second labels and verifies that each tool reads its own label.

Approach

Because the compiler already records each mount module path, using its absolute path as the registration ID should isolate config without an author-supplied namespace or a cloned ESM dependency graph.

• Bind every evaluated mount export to its compiler-derived registration ID
• Resolve extension contributions back to their mount by source path
• Propagate the registration through factories, callbacks, and custom thenables with AsyncLocalStorage
• Keep the package namespace for durable state only
• Remove the eve/extension bundler shim and ambient config scope

mount module path -> registration ID -> validated config
extension source  -> registration ID -> extension.config

Validation

• pnpm --filter eve typecheck
• pnpm --filter eve build:js
• 22 focused unit tests
• 4 bundler integration tests
• Duplicate-mount scenario with distinct first and second results
• Full unit run: 6,841 tests passed; one unrelated host test timed out and passed on isolated rerun

Fixes #2270.

Requested by: rui.lealsalvadorconti

[vercel]

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Project	Deployment	Actions	Updated (UTC)
eve-docs	Building	Preview	Aug 19, 2026 4:35pm
eve-docs-4759	Ready	Preview, v0	Aug 19, 2026 4:35pm
eve-pkg	Ready	Preview	Aug 19, 2026 4:35pm
eve-rr	Error		Aug 19, 2026 4:35pm

[github-actions]

Bundle + Package Summary: apps/fixtures/weather-agent

Key takeaways

• No notable deltas vs main (2c01eab).

Delta vs main (2c01eab)

Area	Metric	Baseline	Current	Delta
Package	Packed tarball	8.23 MB	8.23 MB	+4.5 kB ⚠️
Package	Unpacked publish size	30.91 MB	30.92 MB	+6.9 kB ⚠️
Package	Installed footprint	74.94 MB	74.95 MB	+6.9 kB ⚠️
Package	Published files	3335	3339	+4
Package	Installed files	7043	7047	+4
Package	Installed package instances	35	35	0
Package	Distinct installed package names	34	34	0
Package	Installed dependency edges	53	53	0
Package	Installed optional peer edges	47	47	0
Runtime	Unique function payloads	2	2	0
Runtime	Total function bytes	17.98 MB	17.99 MB	+11.3 kB ⚠️
Runtime	Public routes	16	16	0

Changed function payloads vs main (2c01eab) (2)

Function	Status	Baseline	Current	Delta	Route changes
functions/__server.func	changed	8.99 MB	9.00 MB	+5.7 kB ⚠️	none
functions/.well-known/workflow/v1/flow.func	changed	8.99 MB	9.00 MB	+5.7 kB ⚠️	none

eve init install

Metric	Baseline	Current	Delta
Installed footprint	113.35 MB	113.36 MB	+6.9 kB ⚠️
Installed packages	121	121	0
dependencies	4	4	0
devDependencies	2	2	0
Dependency package bytes	45.41 MB	45.42 MB	+6.9 kB ⚠️
devDependency package bytes	5.04 MB	5.04 MB	0 B ➖

Build Metadata

• Preset: vercel
• Nitro: nitro@3.0.260610-beta
• Output directory: apps/fixtures/weather-agent/.vercel/output
• Build metadata timestamp: 2026-08-19T16:38:07.781Z
• Route aliases: 16 public, 1 internal (17 total aliases)
• Vercel routes in config: 19
• Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small

Package Drill-Down

Package Details

• Package: eve@0.39.1
• Package directory: packages/eve
• Tarball: 8.23 MB (eve-0.39.1.tgz)
• Unpacked payload: 30.92 MB across 3339 published files
• Installed footprint: 74.95 MB across 7047 installed files
• Installed root package: 29.56 MB
• Installed dependencies: 45.39 MB
• Installed package instances: 35
• Distinct installed package names: 34
• Installed dependency edges: 53
• Installed optional peer edges: 47
• Runtime dependencies: 2
• Peer dependencies: 5 (4 optional)

Installed footprint is measured from an isolated temporary npm install of the packed tarball.
Graph metrics read only package.json files in package directories directly beneath a node_modules boundary, including nested boundaries. Each directory is one package instance; distinct names come from those manifests. Dependency edges count each unique name in dependencies or optionalDependencies per instance; optional peer edges count peerDependencies marked optional.

Heavy installed dependencies

• eve: 29.56 MB (39.4%)
• @rolldown/binding-linux-x64-gnu: 19.91 MB (26.6%)
• ai: 6.69 MB (8.9%)
• zod: 5.07 MB (6.8%)
• undici: 3.50 MB (4.7%)

Publish payload breakdown

Published file size
🔴 dist/src/compiled/shadcn-registry/index.js       [################........] 10.20 MB 33.0%
🟠 dist/src/compiled/@photon-ai/chat-adapter-ime... [####....................] 2.44 MB 7.9%
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [##......................] 1.51 MB 4.9%
🟡 dist/src/compiled/_chunks/node/undici-CUIybhQ... [#.......................] 508.8 kB 1.6%
🟡 dist/src/compiled/_chunks/workflow/undici-BBG... [#.......................] 508.8 kB 1.6%
🔴 Other published files                            [########################] 15.75 MB 50.9%

Installed footprint breakdown

Installed package size
🔴 eve                             [########################] 29.56 MB 39.4%
🔴 @rolldown/binding-linux-x64-gnu [################........] 19.91 MB 26.6%
🔴 ai                              [#####...................] 6.69 MB 8.9%
🔴 zod                             [####....................] 5.07 MB 6.8%
🟠 undici                          [###.....................] 3.50 MB 4.7%
🟠 nitro                           [##......................] 2.41 MB 3.2%
🔴 Other installed packages        [######..................] 7.81 MB 10.4%

Runtime dependencies (2)

Package	Range	Notes
nitro	3.0.260610-beta
undici	8.9.0

Peer dependencies (5)

Package	Range	Notes
@opentelemetry/api	^1.0.0	optional peer
ai	catalog:
braintrust	^3.0.0	optional peer
just-bash	^3.0.0	optional peer
microsandbox	^0.5.0	optional peer

eve init install drill-down

eve init install details

• Command: eve init my-agent
• Package manager: npm
• Installed footprint: 113.36 MB across 8923 installed files
• Installed packages: 121 total (115 transitive-only)
• dependencies: 4 direct packages totaling 45.42 MB
• devDependencies: 2 direct packages totaling 5.04 MB
• Other transitive package files: 62.90 MB

Installed footprint is measured from an isolated temporary eve init my-agent using the current packed eve tarball.

Heavy installed dependencies

• eve: 29.56 MB (26.1%)
• @typescript/typescript-linux-x64: 27.95 MB (24.7%)
• @rolldown/binding-linux-x64-gnu: 19.91 MB (17.6%)
• zod: 9.02 MB (8.0%)
• ai: 6.69 MB (5.9%)

Installed footprint breakdown

Installed package size
🔴 eve                              [########################] 29.56 MB 26.1%
🔴 @typescript/typescript-linux-x64 [#######################.] 27.95 MB 24.7%
🔴 @rolldown/binding-linux-x64-gnu  [################........] 19.91 MB 17.6%
🔴 zod                              [#######.................] 9.02 MB 8.0%
🔴 ai                               [#####...................] 6.69 MB 5.9%
🟠 undici                           [###.....................] 3.50 MB 3.1%
🔴 Other installed packages         [##############..........] 16.72 MB 14.8%

dependencies (4)

Package	Range	Installed size	Share
@vercel/connect	0.4.3	141.0 kB	0.1%
ai	^7.0.58	6.69 MB	5.9%
eve	file:eve-0.39.1.tgz	29.56 MB	26.1%
zod	4.4.3	9.02 MB	8.0%

devDependencies (2)

Package	Range	Installed size	Share
@types/node	24.x	2.54 MB	2.2%
typescript	7.0.2	2.50 MB	2.2%

Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 9.00 MB 50.0%
🔴 functions/__server.func                         [########################] 9.00 MB 50.0%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 9.00 MB

Metric	Value
Public routes	/.well-known/workflow/v1/flow
Runtime	nodejs24.x
Handler	index.mjs
Payload	9.00 MB
Function files	9.00 MB across 50 files
Traced dependencies	0 B
Signal	🟠 Bundled file index.mjs is 1.98 MB (22.0%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                     [#################.......] 1.98 MB 22.0%
🟠 _chunks/runtime-artifacts.mjs [###############.........] 1.78 MB 19.8%
🟡 _libs/undici.mjs              [########................] 980.5 kB 10.9%
🟡 _chunks/sandbox.mjs           [#######.................] 781.9 kB 8.7%
🟡 _chunks/frames-DoexhtxJ.mjs   [######..................] 672.6 kB 7.5%
🟠 Other bundled files           [########################] 2.80 MB 31.1%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x",
  "maxDuration": "max",
  "experimentalTriggers": [
    {
      "type": "queue/v2beta",
      "topic": "__eve776561746865722d6167656e74_wkf_workflow_*",
      "consumer": "default",
      "retryAfterSeconds": 5,
      "initialDelaySeconds": 0
    }
  ],
  "environment": {
    "WORKFLOW_PRECONDITION_GUARD": "1"
  }
}

---

🟠 functions/__server.func • 15 public routes, 1 internal alias • 9.00 MB

Metric	Value
Public routes	/ /eve/v1/callback/[token] /eve/v1/connections/[name]/callback/[attemptId]/[token] /eve/v1/connections/[name]/callback/[token] /eve/v1/health /eve/v1/info /eve/v1/session /eve/v1/session/[parentSessionId]/subagents/[callId]/[childSessionId]/stream /eve/v1/session/[sessionId] /eve/v1/session/[sessionId]/cancel /eve/v1/session/[sessionId]/clear /eve/v1/session/[sessionId]/compact /eve/v1/session/[sessionId]/reset /eve/v1/session/[sessionId]/stream /eve/v1/task-input/[token]
Internal aliases	/__server
Runtime	nodejs24.x
Handler	index.mjs
Payload	9.00 MB
Function files	9.00 MB across 50 files
Traced dependencies	0 B
Signal	🟠 Bundled file index.mjs is 1.98 MB (22.0%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                     [#################.......] 1.98 MB 22.0%
🟠 _chunks/runtime-artifacts.mjs [###############.........] 1.78 MB 19.8%
🟡 _libs/undici.mjs              [########................] 980.5 kB 10.9%
🟡 _chunks/sandbox.mjs           [#######.................] 781.9 kB 8.7%
🟡 _chunks/frames-DoexhtxJ.mjs   [######..................] 672.6 kB 7.5%
🟠 Other bundled files           [########################] 2.80 MB 31.1%

🧾 Vercel Config

{
  "handler": "index.mjs",
  "launcherType": "Nodejs",
  "shouldAddHelpers": false,
  "supportsResponseStreaming": true,
  "runtime": "nodejs24.x"
}

Build Timing: e2e/fixtures/agent-tools-sandbox

This is an informational timing measurement inside eve build, from preflight through publication. Output-size measurement and profile writing are excluded.

Build mode: deployable Vercel build with sandbox template prewarm included.

• Build pipeline: 2.57 s -> 27.15 s (+24.57 s) vs main (2c01eab).
• Timing is informational: shared GitHub runners are too variable for a hard timing budget.

Detailed phase timings vs `main (2c01eab)`

Phase	Baseline	Current	Delta
extension.check	1.1 ms	1.1 ms	0.0 ms
project.resolve	0.3 ms	0.3 ms	0.0 ms
workspace.create	0.6 ms	0.6 ms	0.0 ms
host.prepare	271.3 ms	283.4 ms	+12.1 ms
vercel.service-prefix.resolve	1.7 ms	1.5 ms	-0.2 ms
nitro.create	200.6 ms	198.3 ms	-2.3 ms
sandbox.prewarm	681.6 ms	25.30 s	+24.61 s
nitro.cache.prepare	0.3 ms	0.3 ms	0.0 ms
nitro.prepare	0.7 ms	0.7 ms	0.0 ms
nitro.public-assets	0.6 ms	0.6 ms	0.0 ms
nitro.prerender	0.5 ms	0.4 ms	-0.1 ms
nitro.bundle	1.36 s	1.29 s	-67.8 ms
nitro.cache.write	0.3 ms	0.3 ms	0.0 ms
vercel.workflow-function.materialize	49.8 ms	60.7 ms	+10.9 ms
agent-summary.emit	0.5 ms	0.5 ms	0.0 ms
nitro.close	0.1 ms	0.1 ms	0.0 ms
output.publish	2.8 ms	9.5 ms	+6.7 ms
workspace.remove	1.5 ms	1.6 ms	+0.1 ms