first commit

node_modules/expo-modules-core/ios/Uuidv5/Exceptions.swift

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+import Foundation
+
+internal class InvalidNamespaceException: GenericException<String> {
+  override var reason: String {
+    "Namespace: `\(param)` is not a valid namespace. Namespace should be a valid UUID string"
+  }
+}

node_modules/expo-modules-core/ios/Uuidv5/Uuidv5.swift

@@ -0,0 +1,32 @@
+import Foundation
+import CommonCrypto
+import CryptoKit
+
+func uuidv5(name: String, namespace: UUID) -> UUID {
+  var spaceUID = namespace.uuid
+  var data = withUnsafePointer(to: &spaceUID) { [count = MemoryLayout.size(ofValue: spaceUID)] in
+    Data(bytes: $0, count: count)
+  }
+
+  data.append(contentsOf: name.utf8)
+
+  // Compute SHA1 digest
+  var digest = [UInt8](repeating: 0, count: Int(CC_SHA1_DIGEST_LENGTH))
+  data.withUnsafeBytes { (ptr: UnsafeRawBufferPointer) in CC_SHA1(ptr.baseAddress, CC_LONG(data.count), &digest) }
+
+  // Set version bits:
+  digest[6] = digest[6] & 0x0F | UInt8(5) << 4
+  // Set variant bits:
+  digest[8] = digest[8] & 0x3F | 0x80
+
+  // Create a tuple for the final UUID
+  var uuidTuple = namespace.uuid
+
+  withUnsafeMutablePointer(to: &uuidTuple) { pointer in
+    let bound = pointer.withMemoryRebound(to: UInt8.self, capacity: 16) { $0 }
+    digest.enumerated().forEach { (bound + $0.offset).pointee = $0.element }
+  }
+
+  // Convert digest to UUID and return
+  return UUID(uuid: uuidTuple)
+}