fix(eve): client streams - reconnect idle streams by AndrewBarba · Pull Request #369 · vercel/eve

AndrewBarba · 2026-06-27T13:38:30Z

Summary

reconnect idle TypeScript client message streams after 30s and resume from the last consumed event index
raise the default consecutive reconnect budget to tolerate more than five minutes of silent stream time
surface missing turn boundaries consistently for both result() and async iteration
document the new streamIdleTimeoutMs option and add a patch changeset
log dispatched child turn workflow ids for future workflow scheduling flakes

Why

A Vercel Workflow scheduling stall can leave the parent session stream open but silent. The client previously waited for platform stream cutoffs, which made realtime streaming failures show up minutes later as vague eval mismatches. This keeps stream consumption seamless across idle transport reconnects while still failing turns that never reach a boundary.

Validation

pnpm --filter eve exec vitest run --config vitest.unit.config.ts src/client/session.test.ts src/client/client.test.ts
pnpm --filter eve exec vitest run --config vitest.unit.config.ts src/execution/workflow-steps.test.ts src/execution/turn-dispatch.test.ts src/execution/turn-control-receiver.test.ts
pnpm --filter eve run typecheck
pnpm docs:check
pnpm fmt
pnpm lint

Signed-off-by: Andrew Barba <barba@hey.com>

vercel · 2026-06-27T13:38:36Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
eve-docs	Ready	Preview, Comment, Open in v0	Jun 27, 2026 4:35pm

github-actions · 2026-06-27T13:40:51Z

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

Key takeaways

No notable deltas vs main (faf86e3).

Delta vs `main (faf86e3)`

Area	Metric	Baseline	Current	Delta
Package	Packed tarball	3.48 MB	3.48 MB	+2.1 kB ⚠️
Package	Unpacked publish size	12.64 MB	12.65 MB	+11.6 kB ⚠️
Package	Installed footprint	52.63 MB	52.65 MB	+11.6 kB ⚠️
Package	Published files	2371	2371	0
Package	Installed files	5579	5579	0
Runtime	Unique function payloads	2	2	0
Runtime	Total function bytes	9.18 MB	9.18 MB	-6 B ✅
Runtime	Public routes	9	9	0

Changed function payloads vs main (faf86e3) (2)

Function	Status	Baseline	Current	Delta	Route changes
`functions/__server.func`	changed	3.46 MB	3.46 MB	-144 B ✅	none
`functions/.well-known/workflow/v1/flow.func`	changed	5.72 MB	5.72 MB	+138 B ⚠️	none

Build Metadata

Preset: vercel
Nitro: nitro@3.0.260610-beta
Output directory: apps/fixtures/weather-agent/.vercel/output
Build metadata timestamp: 2026-06-27T16:34:49.036Z
Route aliases: 9 public, 1 internal (10 total aliases)
Vercel routes in config: 10
Severity legend: 🔴 dominant/large, 🟠 notable, 🟡 watch, ⚪ small

Package Drill-Down

Package Details

Package: eve@0.16.1
Package directory: packages/eve
Tarball: 3.48 MB (eve-0.16.1.tgz)
Unpacked payload: 12.65 MB across 2371 published files
Installed footprint: 52.65 MB across 5579 installed files
Installed root package: 11.38 MB
Installed dependencies: 41.27 MB
Runtime dependencies: 1
Peer dependencies: 12 (11 optional)

Installed footprint is measured from an isolated temporary npm install of the packed tarball.

Heavy installed dependencies

@rolldown/binding-linux-x64-gnu: 20.26 MB (38.5%)
eve: 11.38 MB (21.6%)
ai: 6.27 MB (11.9%)
zod: 5.04 MB (9.6%)
nitro: 2.41 MB (4.6%)

Publish payload breakdown

Published file size
🟠 dist/src/compiled/experimental-ai-sdk-code-mo... [####....................] 1.51 MB 11.9%
🟡 dist/src/compiled/@workflow/core/runtime.js      [##......................] 788.4 kB 6.2%
🟡 dist/src/compiled/@vercel/sandbox/index.js       [##......................] 632.0 kB 5.0%
🟡 dist/src/compiled/@chat-adapter/slack/index.js   [#.......................] 438.4 kB 3.5%
🟡 dist/src/compiled/_chunks/workflow/attribute-... [#.......................] 371.6 kB 2.9%
🔴 Other published files                            [########################] 8.92 MB 70.5%

Installed footprint breakdown

Installed package size
🔴 @rolldown/binding-linux-x64-gnu [########################] 20.26 MB 38.5%
🔴 eve                             [#############...........] 11.38 MB 21.6%
🔴 ai                              [#######.................] 6.27 MB 11.9%
🔴 zod                             [######..................] 5.04 MB 9.6%
🟠 nitro                           [###.....................] 2.41 MB 4.6%
🟡 rolldown                        [#.......................] 771.7 kB 1.5%
🔴 Other installed packages        [########................] 6.52 MB 12.4%

Runtime dependencies (1)

Package	Range	Notes
`nitro`	`3.0.260610-beta`

Peer dependencies (12)

Package	Range	Notes
`@opentelemetry/api`	`^1.0.0`	optional peer
`@sveltejs/kit`	`^2.0.0`	optional peer
`ai`	`catalog:`
`braintrust`	`^3.0.0`	optional peer
`just-bash`	`^3.0.0`	optional peer
`microsandbox`	`^0.5.0`	optional peer
`next`	`^16.0.0`	optional peer
`nuxt`	`^4.0.0`	optional peer
`react`	`^19.0.0`	optional peer
`svelte`	`^5.0.0`	optional peer
`vite`	`^8.0.0`	optional peer
`vue`	`^3.5.0`	optional peer

Function Drill-Down

Payload Size Graph

Unique function payload size and share of total
🔴 functions/.well-known/workflow/v1/flow.func     [########################] 5.72 MB 62.3%
🟠 functions/__server.func                         [###############.........] 3.46 MB 37.7%

Top Function Payloads

🟠 functions/.well-known/workflow/v1/flow.func • 1 public route • 5.72 MB

Metric	Value
Public routes	`/.well-known/workflow/v1/flow`
Runtime	`nodejs24.x`
Handler	`index.mjs`
Payload	5.72 MB
Function files	5.72 MB across 26 files
Traced dependencies	0 B
Signal	🟠 Bundled file `__eve_nitro_handler__.mjs` is 1.96 MB (34.2%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 __eve_nitro_handler__.mjs              [########################] 1.96 MB 34.2%
🟠 _chunks/runtime.mjs                    [############............] 975.4 kB 17.0%
🟡 _chunks/sandbox.mjs                    [#########...............] 766.0 kB 13.4%
🟡 _chunks/attribute-changes-DUxG-Gic.mjs [######..................] 473.2 kB 8.3%
🟡 _libs/@ai-sdk/gateway+[...].mjs        [#####...................] 413.5 kB 7.2%
🟠 Other bundled files                    [##############..........] 1.14 MB 19.9%

🧾 Vercel Config

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

🟠 functions/__server.func • 8 public routes, 1 internal alias • 3.46 MB

Metric	Value
Public routes	`/` `/eve/v1/callback/[token]` `/eve/v1/connections/[name]/callback/[token]` `/eve/v1/health` `/eve/v1/info` `/eve/v1/session` `/eve/v1/session/[sessionId]` `/eve/v1/session/[sessionId]/stream`
Internal aliases	`/__server`
Runtime	`nodejs24.x`
Handler	`index.mjs`
Payload	3.46 MB
Function files	3.46 MB across 19 files
Traced dependencies	0 B
Signal	🟠 Bundled file `index.mjs` is 990.6 kB (28.6%)

🟠 🔎 Dependency Analysis

📦 Bundled files:

Bundled file size
🟠 index.mjs                              [########################] 990.6 kB 28.6%
🟠 _chunks/runtime.mjs                    [#####################...] 883.8 kB 25.6%
🟠 _chunks/sandbox.mjs                    [###################.....] 766.0 kB 22.1%
🟡 _chunks/attribute-changes-DUxG-Gic.mjs [###########.............] 448.9 kB 13.0%
⚪ _libs/zod.mjs                          [###.....................] 114.2 kB 3.3%
🟡 Other bundled files                    [######..................] 255.4 kB 7.4%

🧾 Vercel Config

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

Signed-off-by: Andrew Barba <barba@hey.com>

fix(eve): client streams - reconnect idle streams

052e0ff

Signed-off-by: Andrew Barba <barba@hey.com>

vercel Bot deployed to Preview June 27, 2026 13:39 View deployment

fix(eve): tui - include stream idle timeout in fake session

f1de748

Signed-off-by: Andrew Barba <barba@hey.com>

vercel Bot deployed to Preview June 27, 2026 14:16 View deployment

AndrewBarba requested a review from ruiconti June 27, 2026 16:04

Merge branch 'main' into barba/client-stream-idle-reconnect

c7f8ff8

vercel Bot deployed to Preview June 27, 2026 16:06 View deployment

Merge branch 'main' into barba/client-stream-idle-reconnect

8a9f454

vercel Bot deployed to Preview June 27, 2026 16:35 View deployment

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fix(eve): client streams - reconnect idle streams#369

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AndrewBarba commented Jun 27, 2026

Summary

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

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

Delta vs `main (faf86e3)`