import { type AssertSizeErrorType } from '../data/assertSize.js';
import { type IsBytesErrorType } from '../data/isBytes.js';
import { type IsHexErrorType } from '../data/isHex.js';
import { type PadErrorType } from '../data/pad.js';
import type { ErrorType } from '../errors/utils.js';
import type { Bytes, Hex } from '../types/data.js';
import { type NumberToHexErrorType, type NumberToHexOpts } from './toHex.js';
export type ToBytesParameters = {
    /** Size of the output bytes. */
    size?: number | undefined;
};
export type ToBytesErrorType = IsBytesErrorType | NumberToBytesErrorType | BoolToBytesErrorType | HexToBytesErrorType | StringToBytesErrorType | IsHexErrorType | ErrorType;
/**
 * Encodes a value to a byte array.
 *
 * - Docs: https://viem.sh/docs/utilities/toBytes
 * - Example: https://viem.sh/docs/utilities/toBytes#usage
 *
 * @param value Value to encode.
 * @param opts Options.
 * @returns Byte array value.
 *
 * @example
 * import { toBytes } from 'viem'
 * const data = toBytes('Hello world')
 * // Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33])
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.toBytes(420)
 * // Uint8Array([1, 164])
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.toBytes(420, { size: 4 })
 * // Uint8Array([0, 0, 1, 164])
 */
export declare function toBytes(value: string | bigint | number | boolean | Hex | Bytes, opts?: ToBytesParameters): Bytes;
export type BoolToBytesOpts = {
    /** Size of the output bytes. */
    size?: number | undefined;
};
export type BoolToBytesErrorType = AssertSizeErrorType | PadErrorType | ErrorType;
/**
 * Encodes a boolean into a byte array.
 *
 * - Docs: https://viem.sh/docs/utilities/toBytes#booltobytes
 *
 * @param value Boolean value to encode.
 * @param opts Options.
 * @returns Byte array value.
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.boolToBytes(true)
 * // Uint8Array([1])
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.boolToBytes(true, { size: 32 })
 * // Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1])
 */
export declare function boolToBytes(value: boolean, opts?: BoolToBytesOpts): Uint8Array;
export type HexToBytesOpts = {
    /** Size of the output bytes. */
    size?: number | undefined;
};
export type HexToBytesErrorType = AssertSizeErrorType | PadErrorType | ErrorType;
/**
 * Encodes a hex string into a byte array.
 *
 * - Docs: https://viem.sh/docs/utilities/toBytes#hextobytes
 *
 * @param hex Hex string to encode.
 * @param opts Options.
 * @returns Byte array value.
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.hexToBytes('0x48656c6c6f20776f726c6421')
 * // Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33])
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.hexToBytes('0x48656c6c6f20776f726c6421', { size: 32 })
 * // Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
 */
export declare function hexToBytes(hex_: Hex, opts?: HexToBytesOpts): Bytes;
export type NumberToBytesErrorType = NumberToHexErrorType | HexToBytesErrorType | ErrorType;
/**
 * Encodes a number into a byte array.
 *
 * - Docs: https://viem.sh/docs/utilities/toBytes#numbertobytes
 *
 * @param value Number to encode.
 * @param opts Options.
 * @returns Byte array value.
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.numberToBytes(420)
 * // Uint8Array([1, 164])
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.numberToBytes(420, { size: 4 })
 * // Uint8Array([0, 0, 1, 164])
 */
export declare function numberToBytes(value: bigint | number, opts?: NumberToHexOpts | undefined): Uint8Array;
export type StringToBytesOpts = {
    /** Size of the output bytes. */
    size?: number | undefined;
};
export type StringToBytesErrorType = AssertSizeErrorType | PadErrorType | ErrorType;
/**
 * Encodes a UTF-8 string into a byte array.
 *
 * - Docs: https://viem.sh/docs/utilities/toBytes#stringtobytes
 *
 * @param value String to encode.
 * @param opts Options.
 * @returns Byte array value.
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.stringToBytes('Hello world!')
 * // Uint8Array([72, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100, 33])
 *
 * @example
 * import { Encoding } from 'viem'
 * const data = Encoding.stringToBytes('Hello world!', { size: 32 })
 * // Uint8Array([72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
 */
export declare function stringToBytes(value: string, opts?: StringToBytesOpts): Bytes;
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