Type system
Last updated
Last updated
The table below is a mapping between scale-codec types (Rust) and TypeScript types that we're using for Dedot:
| Scale Codec (Rust) | TypeScript (dedot) |
|---|---|
u8, u16, u32,
i8, i16, i32
number
u64, u128, u256,
i64, i128, i256
bigint (native BigInt, not bn.js)
bool
boolean (true, false)
Option<T>
T | undefined
Result<Ok, Err>
{
isOk: true;
isErr?: false;
value: Ok
} | {
isOk?: false;
isErr: true;
err: Err
}
Vec<T>
Array<T>
str
string
Tuple: (A, B), ()
[A, B], []
Struct:
struct {
field_1: u8,
field_2: str
}
{
field_1: number,
field_2: string
}
Enum:
enum {
Variant1(u8),
Variant2(bool),
Variant3
}
{
type: 'Variant1',
value: number
} | {
type: 'Variant2',
value: boolean
} | {
type: 'Variant3'
}
FlatEnum:
enum {
Variant1,
Variant2
}
'Variant1' | 'Variant2'