Replay Node (Experimental)

For recording Node processes, Replay provides the @replayio/node npm package which can be used to execute and record a script.

Getting setup

npm i @replayio/node --global replay-node script-name.js RECORD_REPLAY_API_KEY=YOUR-KEY npx @replayio/replay view-latest
Note: This will prompt you to install @replayio/replay if you havenโ€™t already!


Lets say you want to record loop.js
for (let i = 0; i < 5; i++) { console.log(`Hello ${i}`) }
You'd first create the replay with replay-node and then upload it with @replayio/replay:
replay-node loop.js RECORD_REPLAY_API_KEY=YOUR-KEY npx @replayio/replay view-latest
And once it's uploaded you'd be able to view it at app.replay.io:
Image without caption


If you want to record a ts-node invocation, invoke replay-node like so
replay-node --exec ts-node ...

Upgrading Node

Replay's fork of Node is in active development and it is recommended that you update it fairly regularly.
replay-node --update

Upgrading the CLI

If the CLI is installed locally, you can run npm i @replayio/replay@latest. If the CLI is installed globally, you can run npm update -g @replayio/replay .

Detecting replay-node

If you want to detect that replay-node is running from user space you can check for the existence of process.recordreplay.