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+# Aleo Type Mapping Spec
+
+## Types
+
+```typescript
+export type Plaintext = Array | Literal | Struct;
+
+export type Ciphertext = string;
+
+export type Value = Plaintext | Record | Future;
+```
+
+### Literal Types
+
+```typescript
+export type Literal =
+  | address
+  | bool
+  | group
+  | u8
+  | u16
+  | u32
+  | u64
+  | u128
+  | i8
+  | i16
+  | i32
+  | i64
+  | i128
+  | field
+  | scalar
+  | signature;
+```
+
+#### Primitives
+
+```typescript
+/** Boolean value (true or false) */
+export type bool = boolean | string;
+
+/** Unsigned 8-bit integer (0 to 255) */
+export type u8 = number | string;
+
+/** Unsigned 16-bit integer (0 to 65,535) */
+export type u16 = number | string;
+
+/** Unsigned 32-bit integer (0 to 4,294,967,295) */
+export type u32 = number | string;
+
+/** Unsigned 64-bit integer (bigint for full precision) */
+export type u64 = bigint | string;
+
+/** Unsigned 128-bit integer (bigint for full precision) */
+export type u128 = bigint | string;
+
+/** Signed 8-bit integer (-128 to 127) */
+export type i8 = number | string;
+
+/** Signed 16-bit integer (-32,768 to 32,767) */
+export type i16 = number | string;
+
+/** Signed 32-bit integer (-2,147,483,648 to 2,147,483,647) */
+export type i32 = number | string;
+
+/** Signed 64-bit integer (bigint for full precision) */
+export type i64 = bigint | string;
+
+/** Signed 128-bit integer (bigint for full precision) */
+export type i128 = bigint | string;
+```
+
+#### Cryptographic Types
+
+```typescript
+/** Aleo address string (view_key * G) */
+export type address = string;
+
+/** Aleo field element */
+export type field = string;
+
+/** Aleo scalar value */
+export type scalar = string;
+
+/** Aleo signature string (result of signing a message with a private key) */
+export type signature = string;
+```
+
+### Data Structures
+
+#### Arrays
+
+```typescript
+export type Array = Plaintext[];
+```
+
+#### Structs
+
+```typescript
+export type Struct = {
+  [key: string]: Plaintext;
+};
+```
+
+### Records
+
+```typescript
+export type Record = {
+  owner: address;
+  nonce: string;
+  version: number;
+  [key: string]: Plaintext;
+};
+```
+
+### Futures
+
+```typescript
+export type Future = {
+  program_id: string;
+  function_name: string;
+  arguments: Array | Future[];
+};
+```