Introduction

import { createAnonymizer, decryptPIIMap, rehydrate, InMemoryKeyProvider } from 'rehydra';

// Setup
const keyProvider = new InMemoryKeyProvider();
const anonymizer = createAnonymizer({
  ner: { mode: 'quantized' },
  keyProvider
});
await anonymizer.initialize();

// 1. Anonymize before sending to AI
const original = 'Contact John Smith at [email protected]';
const result = await anonymizer.anonymize(original);
// → "Contact <PII type="PERSON" id="1"/> at <PII type="EMAIL" id="1"/>"

// 2. Send to translation API (PII is protected!)
const translated = await translateAPI(result.anonymizedText);
// → "Kontaktieren Sie <PII type="PERSON" id="1"/> unter <PII type="EMAIL" id="1"/>"

// 3. Restore original values
const piiMap = await decryptPIIMap(result.piiMap, await keyProvider.getKey());
const final = rehydrate(translated, piiMap);
// → "Kontaktieren Sie John Smith unter [email protected]"