Trigger.dev v4.5.15 release notes

Upgrade

npx trigger.dev@latest update  # npm
pnpm dlx trigger.dev@latest update  # pnpm
yarn dlx trigger.dev@latest update  # yarn
bunx trigger.dev@latest update  # bun

Self-hosted Docker image: ghcr.io/triggerdotdev/trigger.dev:v4.5.15

Release notes

Read the full release notes: https://trigger.dev/changelog/v4-5-15

What's changed

Improvements

Stop shipping compiled test files in the published packages. The *.test.ts sources were being emitted into dist, adding dead weight to every install and leaving modules that require("vitest") (not a dependency) inside the tarball, which tripped tooling that walks every file in a package. (#4833)
Named side channels on a Session: durable, two-way realtime streams that outlive a single run and are shared across runs. Open a channel with sessions.open(id).channel(name) (or chat.channel(name) inside a chat.agent) to get an .in/.out pair addressed by name rather than the reserved default pair. Writing a side channel's .in does not wake or trigger a run, so a channel can carry out-of-band data (a stream of frames, a control signal) that many clients read while the agent produces it. (#4815)
```
// Inside a chat.agent: stream frames on a named channel, wakes nothing
const frames = chat.channel("screenshots");
await frames.out.append(frame);
frames.in.on((control) => {
/* client control, no suspend */
});
```
Declare channel record types once with sessions.defineChannel(...) and infer them on both the producer and the consumer, including useSessionStreamChannel in React. Channels get a default retention that keeps them bounded, overridable per channel.
Session triggerConfig.tags now accepts up to 10 tags, matching the run tag limit. Previously it was capped at 5, which for chat.agent left room for only 4 of your own tags after the automatic chat:{chatId} tag. (#4832)

All packages: v4.5.15

@trigger.dev/build, @trigger.dev/core, @trigger.dev/python, @trigger.dev/react-hooks, @trigger.dev/redis-worker, @trigger.dev/rsc, @trigger.dev/schema-to-json, @trigger.dev/sdk, trigger.dev

Contributors

Matt Aitken, github-actions[bot], Saadi Myftija, claude[bot], Eric Allam, James Ritchie

Full changelog: https://github.com/triggerdotdev/trigger.dev/compare/v4.5.14...v4.5.15

Trigger.dev v4.5.15

trigger.dev v4.5.15