@polkadot/util
Version:
A collection of useful utilities for @polkadot
17 lines (16 loc) • 501 B
TypeScript
import type { HexString } from '../types.js';
/**
* @name hexAddPrefix
* @summary Adds the `0x` prefix to string values.
* @description
* Returns a `0x` prefixed string from the input value. If the input is already prefixed, it is returned unchanged.
* @example
* <BR>
*
* ```javascript
* import { hexAddPrefix } from '@polkadot/util';
*
* console.log('With prefix', hexAddPrefix('0a0b12')); // => 0x0a0b12
* ```
*/
export declare function hexAddPrefix(value?: string | null): HexString;