common/docs/u8a.md

u8a

Utility methods to convert to and from Uint8Array objects

• u8aFromBuffer Creates a Uint8Array value from a Buffer object.
• u8aToBuffer Creates a Buffer object from a hex string.

u8aFromBuffer

Creates a Uint8Array value from a Buffer object.

u8aFromBuffer (value?: Buffer): string

null inputs returns an empty result, Buffer values return the actual value as a Uint8Array. Anything that is not a Buffer object throws an error.

import { u8aFromBuffer } from '@polkadot/util';

u8aFromBuffer(Buffer.from([1, 2, 3]));

u8aToBuffer

Creates a Buffer object from a hex string.

u8aToBuffer (value?: UInt8Array): Buffer

null inputs returns an empty Buffer result. UInt8Array input values return the actual bytes value converted to a Buffer. Anything that is not a UInt8Array throws an error.

import { u8aToBuffer } from '@polkadot/util';

console.log('Buffer', u8aToBuffer('0x123480001f'));