import type { MaybePromise } from '../types/commons.ts'

// TODO: use async disposable?
export type Closable = {
    close(): MaybePromise<void>
}

export const isClosable = (value: unknown): value is Closable => {
    return (
        typeof value === 'object' &&
        value !== null &&
        'close' in value &&
        typeof (value as Closable).close === 'function'
    )
}