Loop Node

The loop node iterates over an array from the workflow state, applies an optional Jexl transform to each item, and emits the collected results.

Configuration Fields

How arrayPath Resolves

The path is resolved against state.variables:

• "lastOutput" → variables.lastOutput
• "myList" → variables.myList
• "lastOutput.items" → variables.lastOutput.items
• "{{lastOutput.results}}" → same as above, with {{}} stripped

If the resolved value is not an array, it is wrapped as a single-item array [value].

Output

{
  "results": [...],   // transformed items (or original if no transform)
  "total": 5,         // count of results
  "items": [...]      // original items (before transform)
}

The results array is also stored as loopResults in the workflow state and emitted as lastOutput.

Item Transform

itemTransform is a Jexl expression evaluated for each element with item in scope:

item.name
item.price * 1.1
item + " (processed)"

Example Config — Extract names from an array

{
  "arrayPath": "lastOutput.users",
  "itemTransform": "item.name",
  "maxIterations": 50
}

Input: { "users": [{ "name": "Alice", "age": 30 }, { "name": "Bob", "age": 25 }] } Output: { "results": ["Alice", "Bob"], "total": 2, "items": [...] }

Example Config — Passthrough (no transform)

{
  "arrayPath": "lastOutput",
  "maxIterations": 100
}