ValueOrFunction

A value that is either provided directly or computed from a context.

Shared Options primitive (Action Columns, Export, UI, Row Form, …). Prefer this over declaring local T | ((context) => T) aliases in Options files.

When TContext is void, the function form takes no arguments.

Note: Prefer this for option values (string, boolean, arrays, plain objects). Do not use when T itself may be a function — typeof value === 'function' cannot distinguish a static function-valued option from the lazy form.

export type ValueOrFunction<T, TContext = void> = TContext extends void ? T | (() => T) : T | ((context: TContext) => T);