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@polkadot/util/is/undefined.d.ts

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378 BTypeScriptView Raw

1/**
* @name isUndefined
* @summary Tests for a `undefined` values.
* @description
* Checks to see if the input value is `undefined`.
* @example
* <BR>
*
* ```javascript
* import { isUndefined } from '@polkadot/util';
*
* console.log('isUndefined', isUndefined(void(0))); // => true
* ```
*/
15export declare function isUndefined(value?: unknown): value is undefined;

1	`/**`
2	`* @name isUndefined`
3	* @summary Tests for a `undefined` values.
4	`* @description`
5	* Checks to see if the input value is `undefined`.
6	`* @example`
7	`* <BR>`
8	`*`
9	* ```javascript
10	`* import { isUndefined } from '@polkadot/util';`
11	`*`
12	`* console.log('isUndefined', isUndefined(void(0))); // => true`
13	* ```
14	`*/`
15	`export declare function isUndefined(value?: unknown): value is undefined;`