@stdlib/utils-try-require
v0.2.2
Published
Wrap `require` in a try/catch block.
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tryRequire
Wrap
require
in a try/catch block.
Installation
npm install @stdlib/utils-try-require
Usage
var tryRequire = require( '@stdlib/utils-try-require' );
tryRequire( id )
Wraps require
in a try/catch
block. If able to resolve a module id
, the function returns the value bound to module.exports
in the resolved module. Otherwise, the function returns an Error
.
var x = tryRequire( 'beep' );
if ( x instanceof Error ) {
console.log( x.message );
}
Notes
Use caution when attempting to resolve a relative path or a local module. This function attempts to resolve a module from its current path. Thus, the function is unable to resolve anything which is not along its search path. For local requires, use an absolute file path.
var resolve = require( 'path' ).resolve; var out = tryRequire( resolve( '/foo/bar/baz', '..', 'lib', 'beep.js' ) ); if ( out instanceof Error ) { console.error( out.message ); }
Examples
var tryRequire = require( '@stdlib/utils-try-require' );
var out = tryRequire( '_abcdefghijklmnopqrstuvwxyz123456789_' );
if ( out instanceof Error ) {
console.error( out.message );
} else {
throw new Error( 'expected an error' );
}
out = tryRequire( '@stdlib/utils-try-require' );
if ( out !== tryRequire ) {
throw new Error( 'expected export' );
}
Notice
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.