require

function require(value: boolean): asserts value is true

Throws an IllegalArgumentException if the value is false.

function require(
  value: boolean,
  lazyMessage: () => string
): asserts value is true

Throws an IllegalArgumentException with the result of calling lazyMessage if the value is false.

Samples

import { require } from 'kotlinic'

require(true)
require(false) // will fail with IllegalArgumentException
require(false, () => 'Lazy message') // will fail with IllegalArgumentException