Node.js · Workflows Implementation

Node.js with KERNSTACK workflows

Node.js teams use KERNSTACK Workflows to give their workers a spine: a declared sequence in which Node workers (and Go functions, AI steps, and human decisions) run in order, with retries, timeouts, branching, and a recorded history. The onboarding sequence, the billing dunning path, the fulfilment chain stop being cron jobs and hope, and become a flow a reviewer can read.

Approval Workflows stack.json IaC

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Node.js Workflows

Each step invokes a named worker with the run’s context; outputs feed later steps and conditions. The TypeScript you write stays ordinary — a handler that does one job — while the workflow owns sequencing, the unglamorous part that otherwise accretes into a distributed system of setTimeout calls and database flags.

Human steps are the differentiator for product flows: the run pauses on a titled decision (showing an earlier step’s output), resumes with the outcome as data, and records who decided. Approval logic that TypeScript teams usually rebuild per product — queues, reminders, escalation — is declared once in the flow.

Operationally, the run history is the debugger: attempts per step, durations, the exact input a step received. Node teams used to reconstructing flows from five services’ logs find the argument for the pattern in their first incident.

CLI

Plan Node.js Workflows, then deploy.

Terminal — CLI workflow kernstack cli

kernstack add worker --name api --blueprint work-nodejs-minimal
kernstack plan
kernstack deploy

Docs for Node.js Workflows. Workflows on the platform.

nodejs-workflows.txt Node.js

kernstack add worker --name onboard --blueprint work-nodejs-minimal
kernstack add workflow --name approve-payout
# or declare it in stack.json (below): steps call your Node workers by name
kernstack plan && kernstack deploy

stack.json — Node.js + workflows plan · deploy

{
  "resources": {
    "workers": [{ "name": "onboard", "runtime": "nodejs" }, { "name": "remind", "runtime": "nodejs" }],
    "workflows": [{ "name": "onboarding", "steps": [
      { "id": "create", "worker": "onboard" },
      { "id": "approve", "human": { "title": "Approve enterprise onboarding" } },
      { "id": "remind", "worker": "remind", "retry": { "max_attempts": 3, "backoff_seconds": 120 } }
    ] }]
  }
}

FAQ

Frequently asked questions

Do workflow steps replace our job queue?

For ordered, product-facing flows, yes: retries, backoff, and scheduling are step properties. Raw high-volume queue throughput for its own sake is a worker pattern; workflows orchestrate meaning, not just messages.

Can steps be conditional?

Yes. A step can carry a when condition over an earlier step’s output (equals, greater than, exists), so dunning only escalates above a threshold and approvals only fire for enterprise accounts — declared, not buried in a worker.

What does a paused human step cost while waiting?

Nothing. Waiting runs burn no compute, which makes multi-day approval chains economically uninteresting — in the good way.

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