import { getGlobalLoggerIfExists } from './log/log'

/** Always throws. */
export function fatal(...messages: any[]): never {
  getGlobalLoggerIfExists()?.('assert')?.fatal(...messages)
  throw new Error(`${messages.map(String).join(' ')}`)
}

/** Throws if condition is not truthy. */
export function assert(condition: unknown, ...messages: any[]): asserts condition {
  if (condition == null || (typeof condition === 'number' && Number.isNaN(condition)) || !condition)
    fatal(...messages)
}

/** Alias for `assert` for better differentiation to unit test's assert function. */
export function assertCondition(condition: unknown, ...messages: any[]): asserts condition {
  assert(condition, ...messages)
}