Added getNormalizedZipCode

Summary: Added getNormalizedZipCode

Differential Revision: D83914502

fbshipit-source-id: 67c7da860981d2f360043d642a4998ab465c7030

Author: Jiaming You

nodejs/capi-param-builder/src/piiUtil/PIIUtil.js

@@ -11,6 +11,7 @@ const { getNormalizedEmail } = require('./emailUtil');
 const { getNormalizedPhone } = require('./phoneUtil');
 const { getNormalizedDOB } = require('./dobUtil');
 const { getNormalizedGender } = require('./genderUtil');
+const { getNormalizedZipCode } = require('./zipCodeUtil');
 const {
     getNormalizedName,
     getNormalizedCity,
@@ -51,6 +52,8 @@ function getNormalizedPII(piiValue, dataType) {
         normalizedPII = getNormalizedCountry(piiValue);
     } else if (dataType === Constants.PII_DATA_TYPE.EXTERNAL_ID) {
         normalizedPII = getNormalizedExternalID(piiValue);
+    } else if (dataType === Constants.PII_DATA_TYPE.ZIP_CODE) {
+        normalizedPII = getNormalizedZipCode(piiValue);
     }
 
     return normalizedPII;

nodejs/capi-param-builder/src/piiUtil/zipCodeUtil.js

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+const { looksLikeHashed, trim } = require('./commonUtil');
+
+function getNormalizedZipCode(zipCode) {
+    let normalizedZipCode = null;
+
+    if (zipCode != null && typeof zipCode === 'string') {
+        if (looksLikeHashed(zipCode)) {
+            normalizedZipCode = zipCode;
+        } else {
+            const maybeZIP = trim(String(zipCode).toLowerCase().split('-', 1)[0]);
+
+            if (maybeZIP.length >= 2) {
+                normalizedZipCode = maybeZIP;
+            }
+        }
+    }
+
+    return normalizedZipCode;
+}
+
+module.exports = { getNormalizedZipCode };