Convert a string to constant case.
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> Convert a string to constant case.
``bash`
npm install @stdlib/string-base-constantcase
`javascript`
var constantcase = require( '@stdlib/string-base-constantcase' );
#### constantcase( str )
Converts a string to constant case.
`javascript
var str = constantcase( 'foo bar' );
// returns 'FOO_BAR'
str = constantcase( 'foo bar baz' );
// returns 'FOO_BAR_BAZ'
str = constantcase( 'foo_bar' );
// returns 'FOO_BAR'
`
`javascript
var constantcase = require( '@stdlib/string-base-constantcase' );
var str = 'Hello World!';
var out = constantcase( str );
// returns 'HELLO_WORLD'
str = 'I am a tiny little teapot';
out = constantcase( str );
// returns 'I_AM_A_TINY_LITTLE_TEAPOT'
str = 'with big problems';
out = constantcase( str );
// returns 'WITH_BIG_PROBLEMS'
str = 'To be, or not to be: that is the question.';
out = constantcase( str );
// returns 'TO_BE_OR_NOT_TO_BE_THAT_IS_THE_QUESTION'
str = 'isMobile';
out = constantcase( str );
// returns 'IS_MOBILE'
`
*
- [@stdlib/string-base/camelcase][@stdlib/string/base/camelcase]: convert a string to camel case.
- [@stdlib/string-base/lowercase][@stdlib/string/base/lowercase]: convert a string to lowercase.
- [@stdlib/string-base/snakecase][@stdlib/string/base/snakecase]: convert a string to snake case.
- [@stdlib/string-base/uppercase][@stdlib/string/base/uppercase]: convert a string to uppercase.
*
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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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---
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[deno-url]: https://github.com/stdlib-js/string-base-constantcase/tree/deno
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[umd-url]: https://github.com/stdlib-js/string-base-constantcase/tree/umd
[umd-readme]: https://github.com/stdlib-js/string-base-constantcase/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/string-base-constantcase/tree/esm
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[@stdlib/string/base/camelcase]: https://www.npmjs.com/package/@stdlib/string-base-camelcase
[@stdlib/string/base/lowercase]: https://www.npmjs.com/package/@stdlib/string-base-lowercase
[@stdlib/string/base/snakecase]: https://www.npmjs.com/package/@stdlib/string-base-snakecase
[@stdlib/string/base/uppercase]: https://www.npmjs.com/package/@stdlib/string-base-uppercase