Function assertExist

  • assertExist<T>(val): asserts val is NonNullable<T>

  • Asserts that a value exists (is not null or undefined) and throws an error if it doesn't

    Type Parameters

    • T

      The type of the value

    Parameters

    • val: T

      The value to assert existence for

    Returns asserts val is NonNullable<T>

    Throws

    Error if the value is null or undefined

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