Transformer

Type: transformer

Execute JS in a sandbox, broadcast result to a param.

Supports children: No

Non-visual component that runs JavaScript in a sandboxed iframe and broadcasts the return value to a canvas param. Use $param_name to inject canvas param values and {{udf_name}} to inject UDF result rows. UDF data is substituted as a JSON object of column arrays. The method string must be a no-argument arrow function that explicitly returns a value.

Example

{
  "type": "transformer",
  "props": {
    "param": "price_tier",
    "method": "() => { const p = Number($max_price); if (p <= 100) return 'Budget'; if (p <= 300) return 'Mid-range'; return 'Luxury'; }"
  }
}

Every widget is defined as { "type": "transformer", "props": { ... } }. The properties below describe the props object.

Props

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Raw schema

Download the full schema file: /widget-schema/transformer.json