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invariant

Callable

  • invariant(condition, message): never
  • invariant(condition, message): asserts condition

  • Assert that condition is truthy, else throws Error { name: 'InvariantError', message }

    In production environment, message parameter could be stripped from source in order to reduce file size

    invariant(true, 'this should be true');// pass
    invariant(false, 'this should be true');// throw new Error('this should be true')