remeda
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A utility library for JavaScript and Typescript.
19 lines • 607 B
text/typescript
//#region src/isNonNull.d.ts
/**
* A function that checks if the passed parameter is not `null` and narrows its type accordingly.
* Notice that `undefined` is not null!
*
* @param data - The variable to check.
* @returns True if the passed input is defined, false otherwise.
* @signature
* R.isNonNull(data)
* @example
* R.isNonNull('string') //=> true
* R.isNonNull(null) //=> false
* R.isNonNull(undefined) //=> true
* @category Guard
*/
declare function isNonNull<T>(data: T | null): data is T;
//#endregion
export { isNonNull };
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