Copy Error
Copy an error object.
Installation
$ npm install utils-copy-error
Usage
var copy = require( 'utils-copy-error' );
copy( error )
Copy an error object.
var err1 = new TypeError( 'beep' );
var err2 = copy( err1 );
// returns <TypeError>
Notes
-
Supported built-in error types:
-
The function also supports custom error types which are Error instances (e.g., ES2015 subclasses).
-
The function deep copies over all enumerable properties, including property descriptors.
Examples
var copy = require( 'utils-copy-error' );
var err1;
var err2;
err1 = new Error( 'beep' );
err2 = copy( err1 );
console.log( err1 === err2 );
// returns false
console.log( err1.message === err2.message );
// returns true
err1 = new TypeError( 'bad type' );
err2 = copy (err1 );
console.log( err1 === err2 );
// returns false
console.log( err1.stack === err2.stack );
// returns true
err1 = new RangeError( 'invalid value' );
err2 = copy( err1 );
console.log( err1 === err2 );
// returns false
console.log( err1.name === err2.name );
// returns true
To run the example code from the top-level application directory,
$ node ./examples/index.js
Tests
Unit
This repository uses tape for unit tests. To run the tests, execute the following command in the top-level application directory:
$ make test
All new feature development should have corresponding unit tests to validate correct functionality.
Test Coverage
This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:
$ make test-cov
Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,
$ make view-cov
Browser Support
This repository uses Testling for browser testing. To run the tests in a (headless) local web browser, execute the following command in the top-level application directory:
$ make test-browsers
To view the tests in a local web browser,
$ make view-browser-tests
License
MIT license.
Copyright
Copyright © 2015. Athan Reines.
