meaningPromiseOrThrow

Generates a .then() interceptor that avoids any empty data by throwing an error.

Input	Result
any other value, 0, boolean	passes through unchanged
"", null, undefined, [], {}	throws

Available since v1.0.1

Import

import { meaningPromiseOrThrow } from '@helpers4/promise';

Signature

meaningPromiseOrThrow<T>(error: string): (data: T) => T | never

Parameters

Parameter	Type	Description
error	string	The error message thrown if the data is null, undefined, or empty ("", [], {}).

Returns

(data: T) => T | never — A .then() interceptor: returns data unchanged, or throws error.

Examples

Reject an empty string

import { meaningPromiseOrThrow } from '@helpers4/promise';

Promise.resolve('')
  .then(meaningPromiseOrThrow('My custom error message'))
  .then(console.log);
// => 'My custom error message'

Source

View on npm