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Marc-André Bombeck
38309932f3
HealthLog — personal health-tracking PWA with weight, blood pressure, pulse, mood tracking, medication compliance, Withings integration, doctor report PDF export, and Dracula-themed UI.
22 lines
701 B
TypeScript
22 lines
701 B
TypeScript
/**
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* Sanitize user-provided strings before embedding them in LLM prompts.
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* Strips control characters, prompt-injection patterns, and limits length.
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*/
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export function sanitizeForPrompt(input: string, maxLength = 100): string {
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return (
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input
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// Remove control characters
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.replace(/[\x00-\x1f\x7f]/g, "")
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// Remove common prompt injection patterns
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.replace(/```/g, "")
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.replace(/\bsystem\s*:/gi, "")
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.replace(/\bassistant\s*:/gi, "")
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.replace(/\buser\s*:/gi, "")
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.replace(/\bignore\s+(previous|above|all)\b/gi, "")
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.replace(/\bforget\s+(previous|above|all)\b/gi, "")
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// Limit length
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.slice(0, maxLength)
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.trim()
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);
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}
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