Route signals and work

Choose an operator by the path you need:

Result	Operator
Keep a value when a separate condition is true	`gate`
Keep a value when its predicate matches	`filter`
Split one value into matching and other paths	`partition`
Make a value wait for other signals	`dependentOn`
Apply prerequisites to a declaration section	`withPrerequisites`
Declare `if`, `else if`, and `else` sections	`branch`
Isolate durable hook numbering	`scope`
Name and present a declaration group	`group`

Route values

Use filter when the condition depends only on the value. Use gate when another signal supplies the condition. Use partition when both the matching and remaining paths do work.

automations/route-requests.automation.ts

import { automation, onInvocation, partition, sendEmail, t } from "automate.ax"

export default automation("Route requests", () => {
  const request = onInvocation<{ priority: string; summary: string }>()
  const [urgent, routine] = partition(
    request,
    (value) => value.priority === "urgent",
  )

  sendEmail({ subject: "Urgent request", text: t`${urgent.summary}` })
  sendEmail({ subject: "Routine request", text: t`${routine.summary}` })
})

Exactly one partition emits. The other closes, so actions attached to that path don’t run.

Route declaration sections

Use branch when an entire synchronous section changes:

branch(
  urgent,
  () => sendEmail({ subject: "Urgent", text: "Escalate it." }),
  () => sendEmail({ subject: "Routine", text: "Queue it." }),
)

Don’t declare triggers inside branch or withPrerequisites. Each trigger starts an independent root context. Use correlate to join related occurrences from separate triggers.

Keep runs and declarations readable

Use markSignificant when an emitted signal should keep its connected run visible in Recent runs. Use scope to isolate durable hook numbering without changing execution. Use group when the same section also needs a name and initial presentation in run details.

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Concepts

Guides

Route signals and work

Route values

Route declaration sections

Keep runs and declarations readable

​Route values

​Route declaration sections

​Keep runs and declarations readable

Route values

Route declaration sections

Keep runs and declarations readable