Skip to content
On this page

fromBytes โ€‹

Decodes a byte array to a string, hex value, boolean or number.

Import โ€‹

ts
import { fromBytes } from 'viem'

Usage โ€‹

ts
import { fromBytes } from 'viem'

fromBytes(
  new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33]), 
  'string'
)
// 'Hello world'

fromBytes(
  new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33]), 
  'hex'
)
// '0x48656c6c6f20576f726c6421'

fromBytes(new Uint8Array([1, 164]), 'number')
// 420

fromBytes(new Uint8Array([1]), 'boolean')
// true

Returns โ€‹

string | Hex | number | bigint | boolean

The targeted type.

Parameters โ€‹

value โ€‹

  • Type: ByteArray

The byte array to decode.

to โ€‹

  • Type: "string" | "hex" | "number" | "bigint" | "boolean"

The output type.

Shortcut Functions โ€‹

bytesToHex โ€‹

  • Type: Hex

Decodes a byte array to a hex value.

ts
import { bytesToHex } from 'viem'

bytesToHex(new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33])) 
// '0x48656c6c6f20576f726c6421'

bytesToString โ€‹

  • Type: Hex

Decodes a byte array to a string.

ts
import { bytesToString } from 'viem'

bytesToString(new Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33])) 
// 'Hello world'

bytesToNumber โ€‹

  • Type: number

Decodes a byte array to a number.

ts
import { bytesToNumber } from 'viem'

bytesToNumber(new Uint8Array([1, 164])) 
// 420

bytesToBigint โ€‹

  • Type: number

Decodes a byte array to a number.

ts
import { bytesToBigint } from 'viem'

bytesToBigint(new Uint8Array([12, 92, 243, 146, 17, 135, 111, 181, 229, 136, 67, 39, 250, 86, 252, 11, 117])) 
// 4206942069420694206942069420694206942069n

bytesToBool โ€‹

  • Type: boolean

Decodes a byte array to a boolean.

ts
import { bytesToBool } from 'viem'

bytesToBool(new Uint8Array([1])) 
// true

Released under the MIT License.