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export function generateOtp(digits = 4): number {
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if (digits < 1) {
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throw new Error('OTP digits must be at least 1');
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}
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const min = Math.pow(10, digits - 1);
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const max = Math.pow(10, digits) - 1;
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const otp = Math.floor(Math.random() * (max - min + 1)) + min;
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return otp;
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}
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