Trigger.dev v4.5.15

1 new feature and 2 improvements.

Highlights

Named side channels on Sessions

Sessions now support named side channels: durable, two-way streams that outlive a single run and can be shared across runs. Open a channel with sessions.open(id).channel(name), or with chat.channel(name) inside a chat.agent, to get an .in/.out pair addressed by name. Writing to a side channel's .in doesn't wake or trigger a run, so channels carry out-of-band data (frame streams, control signals) that many clients can read simultaneously.

Define typed channel schemas once with sessions.defineChannel(...) and get type inference on both producer and consumer, including useSessionStreamChannel in React. Channels have a default retention policy to stay bounded, configurable per channel. (#4815)

Side channels docs

Improvements

• Remove compiled test files from published packages. The *.test.ts sources were being emitted into dist, adding dead weight to every install and including modules that require("vitest") (not a runtime dependency), which tripped tooling that walks every file in a package. (#4833)
• Session triggerConfig.tags now accepts up to 10 tags, matching the run tag limit. Previously capped at 5, which left chat agents with only 4 user tags after the automatic chat:{chatId} tag. (#4832)

How to upgrade

Update the trigger.dev/* packages to v4.5.15 using your package manager:

Self-hosted users: update your Docker image to ghcr.io/triggerdotdev/trigger.dev:v4.5.15.