69 lines
1.7 KiB
JavaScript
69 lines
1.7 KiB
JavaScript
/**
|
|
* @license Apache-2.0
|
|
*
|
|
* Copyright (c) 2018 The Stdlib Authors.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
// MODULES //
|
|
|
|
var getPrototypeOf = require( '@stdlib/utils/get-prototype-of' );
|
|
var typeOf = require( '@stdlib/utils/type-of' );
|
|
var isError = require( './../../is-error' );
|
|
|
|
|
|
// MAIN //
|
|
|
|
/**
|
|
* Tests if a value is a `URIError` object.
|
|
*
|
|
* @param {*} value - value to test
|
|
* @returns {boolean} boolean indicating whether a value is a `URIError` object
|
|
*
|
|
* @example
|
|
* var bool = isURIError( new URIError( 'beep' ) );
|
|
* // returns true
|
|
*
|
|
* @example
|
|
* var bool = isURIError( {} );
|
|
* // returns false
|
|
*/
|
|
function isURIError( value ) {
|
|
if ( typeof value !== 'object' || value === null ) {
|
|
return false;
|
|
}
|
|
// Check for `URIError` objects from the same realm (same Node.js `vm` or same `Window` object)...
|
|
if ( value instanceof URIError ) {
|
|
return true;
|
|
}
|
|
// All `URIError` objects are `Error` objects...
|
|
if ( isError( value ) ) {
|
|
// Walk the prototype tree until we find the desired constructor...
|
|
while ( value ) {
|
|
if ( typeOf( value ) === 'urierror' ) {
|
|
return true;
|
|
}
|
|
value = getPrototypeOf( value );
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// EXPORTS //
|
|
|
|
module.exports = isURIError;
|