Function — logic.function

Declares a named JavaScript function at the top level of the current file.

• Inputs: one dynamic value pin per declared parameter (see "Default parameter values" below)
• Outputs: out — "Function" (call it directly); value — "Assign / Parameter" (wire the function itself out as a value — see "Usage" below)
• Config fields:

Key	Type	Default	Notes
name	text	myFunction	Must be a valid JS identifier. Also the property name seen on the imported module if exported.
params	text	""	Comma-separated parameter names, e.g. "date, format". Blank for no parameters.
mode	select	code	"code" uses the Function Body field below; "blueprint" compiles this function from a nested node graph instead — see Function Graphs & Blueprint Mode.
body	code	""	Only used in "code" mode. Available: the declared parameter names. Use return to produce a value.
isAsync	boolean	false	Enable to use await inside this function's body.
npmDependencies	text	""	Comma-separated npm packages (code mode only).
usage	select	(none — full pin set)	"For Calling / Callback" or "Standalone Function" — see below. Leave unset to keep every pin visible.

Multiple Function nodes are expected in one file, each named and configured independently. A Function left unconnected to an Export node just stays a private, still-emitted helper within that file.

function formatDate(date) {
  return date.toISOString();
}

Usage: Calling/Callback vs. Standalone

The config panel's Usage toggle controls which pins the node shows, so its face matches how you're actually using it:

• For Calling / Callback — hides the "Function" execution-out pin. Keeps "Assign / Parameter" (so you can wire the function into a Callback node or assign it to a variable) and the per-parameter default-value pins.
• Standalone Function — the original, pre-Callback behavior: hides "Assign / Parameter" and every default-value parameter pin. Keeps "Function," for wiring directly into an Export node or a Function Call. Parameters revert to plain, non-wireable text.

Leaving Usage unset keeps every pin from both modes visible at once — existing Function nodes created before this setting existed are unaffected.

Default parameter values

Each declared parameter gets its own wireable input pin (param-<i>), letting you give it a default value — either typed directly on the pin, or wired in from elsewhere — used whenever a caller omits that argument:

function greet(name = "world") {
  return `Hello, ${name}!`;
}