2.1 KiB
buffer
Utility methods to convert to and from Buffer objects
- bufferFromHex Creates a Buffer object from a hex string.
- bufferFromNumber Creates a Buffer object from a number.
- bufferFromU8a Creates a Buffer object from a Uint8Array.
- bufferToHex Creates a hex value from a Buffer object.
- bufferToNumber Creates a Number value from a Buffer object.
- bufferToU8a Creates a Uint8Array value from a Buffer object.
bufferFromHex
Creates a Buffer object from a hex string. (alias of hexToBuffer)
bufferFromHex (value?: string): Buffer
bufferFromNumber
Creates a Buffer object from a number. (alias of numberToBuffer)
bufferFromNumber (value?: number): Buffer
bufferFromU8a
Creates a Buffer object from a Uint8Array. (alias of u8aToBuffer)
bufferFromU8a (value?: string): Buffer
bufferToHex
Creates a hex value from a Buffer object.
bufferToHex (value?: Buffer): string
null inputs returns a 0x result, Buffer values return the actual value as a 0x prefixed hex value. Anything that is not a Buffer object throws an error.
import { bufferToHex } from '@polkadot/util';
bufferToHex(Buffer.from([1, 2, 3]); // => 0x010203
bufferToNumber
Creates a Number value from a Buffer object.
bufferToNumber (value?: Buffer): number
null inputs returns an NaN result, Buffer values return the actual value as a Number.
import { bufferToNumber } from '@polkadot/util';
bufferToNumber(Buffer.from([12, 34, 56])); // => 0x123456
bufferToU8a
Creates a Uint8Array value from a Buffer object.
bufferToU8a (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 { bufferToU8a } from '@polkadot/util';
bufferToU8a(Buffer.from([1, 2, 3]));