Function isNumber

  • isNumber(value: unknown): value is number

  • Checks if a value is a number and not NaN.

    Parameters

    • value: unknown

      The value to check.

    Returns value is number

    • Returns true if the value is a number and not NaN, otherwise false.

    Example

    isNumber(123); // true
    isNumber('123'); // false
    isNumber(NaN); // false

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