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Utilities

The @kynesyslabs/demosdk/utils subpath exposes small pure-function helpers used across the SDK. They are all framework-free and safe to import in browser or Node code.

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Sleep

import { sleep } from "@kynesyslabs/demosdk/utils"

await sleep(1500) // wait 1.5 seconds
sleep(ms) returns a Promise<void> that resolves after the given number of milliseconds.

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Address validation

import { validateEd25519Address } from "@kynesyslabs/demosdk/utils"

validateEd25519Address("0x1234...64hex...")  // true / false
validateEd25519Address(address) returns true when address matches /^0x[0-9a-f]{64}$/i — a 0x prefix followed by exactly 64 hex characters (case-insensitive). Use it to fail fast on malformed input before constructing transactions.

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Uint8Array ↔ Base64

import {
    serializeUint8Array,
    deserializeUint8Array,
} from "@kynesyslabs/demosdk/utils"

const bytes = new Uint8Array([1, 2, 3, 4])
const b64 = serializeUint8Array(bytes)
const back = deserializeUint8Array(b64) // same bytes
serializeUint8Array(u8) returns a Base64 string. deserializeUint8Array(base64) returns the original Uint8Array. Useful when carrying binary payloads through JSON (e.g. wire formats that require string fields).

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Data manipulation

The dataManipulation namespace bundles object-to-hex and forge-buffer helpers used by the wire serializers: 
import { dataManipulation } from "@kynesyslabs/demosdk/utils"

const hex = await dataManipulation.ObjectToHex({ foo: "bar" })
const obj = await dataManipulation.HexToObject(hex)

const forgeHex = dataManipulation.ForgeToHex(forgeBuffer) // "0x..."
const forgeBuf = dataManipulation.HexToForge(forgeHex)    // Uint8Array(64)

const cloned = dataManipulation.copyCreate(obj) // deep clone via JSON round-trip
HelperPurpose
ObjectToHex(obj)JSON-stringify and hex-encode an object. Async (returns Promise<string>).
HexToObject(hex)Inverse of ObjectToHex. Async.
ForgeToHex(buf)Convert a node-forge buffer to 0x-prefixed hex.
HexToForge(hex)Convert a 64-byte hex string to a Uint8Array(64) accepted by node-forge.
copyCreate(obj)Deep-clone via JSON.parse(JSON.stringify(...)). Loses functions / dates / undefined; intended for plain payloads.
Prefer the WebSDK-level helpers (Demos.signMessage, denomination.demToOs, etc.) for everyday use. Reach for utils only when you need raw byte/hex manipulation that the higher-level surface doesn’t cover.