Test if a value is a TypeError object.
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> Test if a value is a [TypeError][mdn-type-error] object.
``bash`
npm install @stdlib/assert-is-type-error
`javascript`
var isTypeError = require( '@stdlib/assert-is-type-error' );
#### isTypeError( value )
Tests if a value is a [TypeError][mdn-type-error] object.
`javascript`
var bool = isTypeError( new TypeError( 'beep' ) );
// returns true
- This function should not be considered robust. While the function should always return true if provided a [TypeError][mdn-type-error] (or a descendant) object, false positives may occur due to the fact that the [TypeError][mdn-type-error] constructor inherits from [Error][mdn-error] and has no internal class of its own. Hence, [TypeError][mdn-type-error] impersonation is possible.
`javascript
var isTypeError = require( '@stdlib/assert-is-type-error' );
var bool = isTypeError( new TypeError( 'type error' ) );
// returns true
bool = isTypeError( new Error( 'error' ) );
// returns false
bool = isTypeError( new EvalError( 'eval error' ) );
// returns false
bool = isTypeError( new ReferenceError( 'reference error' ) );
// returns false
bool = isTypeError( new SyntaxError( 'syntax error' ) );
// returns false
bool = isTypeError( new RangeError( 'range error' ) );
// returns false
bool = isTypeError( new URIError( 'URI error' ) );
// returns false
bool = isTypeError( {} );
// returns false
bool = isTypeError( null );
// returns false
`
*
- [@stdlib/assert-is-error][@stdlib/assert/is-error]: test if a value is an Error object.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
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[stdlib]: https://github.com/stdlib-js/stdlib
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[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/assert-is-type-error/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-type-error/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-type-error/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-type-error/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-type-error/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-type-error/blob/esm/README.md
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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-type-error/main/LICENSE
[mdn-error]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error
[mdn-type-error]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError
[@stdlib/assert/is-error]: https://www.npmjs.com/package/@stdlib/assert-is-error