lazy-widgets
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Typescript retained mode GUI for the HTML canvas API
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TypeScript
/**
* The result of a validator function; a tuple containing whether the input is
* valid and the transformed input, in that order.
*
* Note that if the input is not valid, then the transformed input will be a
* bogus value. It might not even be the type you expect.
*
* @typeParam T - The type of the output (the transformed input).
*
* @category State Management
*/
export type ValidationResult<T> = [true, T] | [false, unknown];