returnOrThrowError

Return a value or throw an error if null or undefined.

Available since v1.0.0

Import

import { returnOrThrowError } from '@helpers4/function';

Signature

returnOrThrowError<T>(value: T | null | undefined, error: string): T

Parameters

Parameter	Type	Description
value	T | null | undefined	A possible non-defined value.
error	string	The error message to throw.

Returns

T — A defined value or an error.

Examples

Return a defined value

Returns the value when it is defined and not null.

returnOrThrowError('hello', 'Value is missing')
// => 'hello'

Throw on null

Throws an error when the value is null or undefined.

returnOrThrowError(null, 'Value is missing')
// throws Error('Value is missing')

Source

View source on GitHub