Codec

@logos-kit/codec encodes and decodes what LEZ puts on the wire: account ids, messages, transactions, program instructions and the testimonial program's records. It matches the Rust engine byte for byte (both are checked against the same test vectors), and it runs in Qt's JavaScript engine: no native BigInt, u128 values are decimal strings.

@logos-kit/codecv0.1.1

npm i @logos-kit/codec

Program callsCopy Anchor Link

A ProgramCall is what sendCall proposes: the program, the accounts it touches, and the instruction bytes.

import { nativeTransfer, tokenTransfer } from '@logos-kit/codec'
import type { AccountId } from '@logos-kit/codec'

declare const from: AccountId, to: AccountId, token: AccountId

const pay = nativeTransfer(from, to, '42')
const give = tokenTransfer(from, to, token, '250')
      
const give: ProgramCall

AmountsCopy Anchor Link

The native token, LOGOS (LGO), has 9 decimals: on the wire and in the SDK its amounts are lepta (1 LGO = 10^9 lepta). formatUnits never rounds, and trims trailing zeros.

import { formatUnits, parseUnits, add, compare } from '@logos-kit/codec'

parseUnits('2.5', 9)      // "2500000000": LGO → lepta
formatUnits('1', 9)       // "0.000000001": lepta → LGO
parseUnits('1.5', 6)      // "1500000"
formatUnits('1500000', 6) // "1.5"
add('1', '2')             // "3"
compare('10', '9')        // 1

Accounts and bytesCopy Anchor Link

Messages and transactionsCopy Anchor Link

TestimonialsCopy Anchor Link