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@polkadot/util/hex/hasPrefix.d.ts

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460 BTypeScriptView Raw

1import type { HexString } from '../types.js';
2/**
* @name hexHasPrefix
* @summary Tests for the existence of a `0x` prefix.
* @description
* Checks for a valid hex input value and if the start matched `0x`
* @example
* <BR>
*
* ```javascript
* import { hexHasPrefix } from '@polkadot/util';
*
* console.log('has prefix', hexHasPrefix('0x1234')); // => true
* ```
*/
16export declare function hexHasPrefix(value?: string | null): value is HexString;

1	`import type { HexString } from '../types.js';`
2	`/**`
3	`* @name hexHasPrefix`
4	* @summary Tests for the existence of a `0x` prefix.
5	`* @description`
6	* Checks for a valid hex input value and if the start matched `0x`
7	`* @example`
8	`* <BR>`
9	`*`
10	* ```javascript
11	`* import { hexHasPrefix } from '@polkadot/util';`
12	`*`
13	`* console.log('has prefix', hexHasPrefix('0x1234')); // => true`
14	* ```
15	`*/`
16	`export declare function hexHasPrefix(value?: string \| null): value is HexString;`