Unpack union

Splits a union-typed stream into separate output streams, one per variant. Only one output is active per input message.

Use this when

• Your downstream tools are variant-specific (e.g. one handler per image format).
• You want to demultiplex a union stream without writing a custom dispatcher.
• You are integrating a generic upstream producer with specialized downstream consumers.

What it does

Consumes one union-typed value per tick and emits it onto the output stream corresponding to its active variant. Input Image.BGR | Image.GRAY | Image.RGB becomes three output streams, with only one producing a message per input.

Inputs

Type	Description
$ts | ...	A union-typed stream.

Outputs

Type	Description
$ts...	One output stream per union variant.

Parameters

This transformation takes no parameters.

Works best with

• Pack union — natural inverse.
• Variant-specific downstream consumers that each handle one type.

Caveats

• Only the active variant's stream produces a message per tick — downstream consumers on inactive streams should tolerate gaps.
• Variant order in the output matches the union's declaration order.