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.

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.

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.

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).

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

Helper	Purpose
`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.

Getting Started

WebSDK

Cross Chain

Utilities

Storage Programs

Code Examples

Web2 Integration

Bridges

Advanced

Wallet Integration

Utilities

Utilities

Sleep

Address validation

Uint8Array ↔ Base64

Data manipulation

​Utilities

​Sleep

​Address validation

​Uint8Array ↔ Base64

​Data manipulation

Utilities

Sleep

Address validation

Uint8Array ↔ Base64

Data manipulation