Return a two-character error identifier corresponding to a provided error message.
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> Return a two-character error identifier corresponding to a provided error message.
``bash`
npm install @stdlib/error-tools-msg2id
`javascript`
var msg2id = require( '@stdlib/error-tools-msg2id' );
#### msg2id( msg )
Returns a two-character error identifier corresponding to a provided error message.
`javascript%s
var v = msg2id( 'invalid value. must be a number. Value: %s.' );`
// e.g., returns '6d'
If provided an unrecognized error message, the function returns null.
`javascript`
var v = msg2id( 'beep boop baz' );
// returns null
`javascript
var msg2id = require( '@stdlib/error-tools-msg2id' );
var list;
var v;
var i;
list = [
'invalid argument. First argument must be a number and not NaN. Value: %s.',%s
'invalid argument. First argument must be a positive integer. Value: .'
];
for ( i = 0; i < list.length; i++ ) {
v = list[ i ];
console.log( 'msg: "%s". id: "%s".', v, msg2id( v ) );
}
`
- [@stdlib/error-tools-msg2id-cli][@stdlib/error-tools-msg2id-cli]: CLI package for use as a command-line utility.
*
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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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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
[@stdlib/error-tools-msg2id-cli]: https://www.npmjs.com/package/@stdlib/error-tools-msg2id-cli
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[cli-section]: https://github.com/stdlib-js/error-tools-msg2id#cli
[cli-url]: https://github.com/stdlib-js/error-tools-msg2id/tree/cli
[@stdlib/error-tools-msg2id]: https://github.com/stdlib-js/error-tools-msg2id/tree/main
[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/error-tools-msg2id/tree/deno
[deno-readme]: https://github.com/stdlib-js/error-tools-msg2id/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/error-tools-msg2id/tree/umd
[umd-readme]: https://github.com/stdlib-js/error-tools-msg2id/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/error-tools-msg2id/tree/esm
[esm-readme]: https://github.com/stdlib-js/error-tools-msg2id/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/error-tools-msg2id/blob/main/branches.md
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