requireNotNull

function requireNotNull<T>(value: T): asserts value is Exclude<T, null>

Throws an IllegalArgumentException if the value is null.

function requireNotNull<T>(
  value: T,
  lazyMessage: () => string
): asserts value is Exclude<T, null>

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

Samples

import { requireNotNull } from 'kotlinic'

requireNotNull(42)
requireNotNull('foo')
requireNotNull(null) // will fail with IllegalStateException