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isError
Test if a value is an Error object.
Installation
npm install @stdlib/assert-is-errorUsage
var isError = require( '@stdlib/assert-is-error' );isError( value )
Tests if a value is an Error object.
var bool = isError( new Error( 'beep' ) );
// returns trueExamples
var isError = require( '@stdlib/assert-is-error' );
var bool = isError( new Error( 'error' ) );
// returns true
bool = isError( new EvalError( 'eval error' ) );
// returns true
bool = isError( new RangeError( 'range error' ) );
// returns true
bool = isError( new ReferenceError( 'reference error' ) );
// returns true
bool = isError( new SyntaxError( 'syntax error' ) );
// returns true
bool = isError( new TypeError( 'type error' ) );
// returns true
bool = isError( new URIError( 'URI error' ) );
// returns true
bool = isError( {} );
// returns false
bool = isError( null );
// returns falseNotice
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.