isConstantcase

Test if a value is a constantcase string.

Usage

var isConstantcase = require( '@stdlib/assert/is-constantcase' );

isConstantcase( value )

Tests if a value is a constantcase string.

var bool = isConstantcase( 'BEEP_BOOP' );
// returns true

bool = isConstantcase( 'BEEP and BOOP' );
// returns false

Notes

The function validates that a value is a string. For all other types, the function returns false.

Examples

var isConstantcase = require( '@stdlib/assert/is-constantcase' );

console.log( isConstantcase( 'BEEP_BOOP' ) );
// => true

console.log( isConstantcase( 'BEEP and BOOP' ) );
// => false

console.log( isConstantcase( 'BEEP_BOOP_BEEP' ) );
// => true

console.log( isConstantcase( 'b' ) );
// => false

console.log( isConstantcase( 'B' ) );
// => true

console.log( isConstantcase( '!' ) );
// => false

console.log( isConstantcase( 'beep boop' ) );
// => false

CLI

Usage

Usage: is-constantcase [options] [<string>]

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.
         --split sep           Delimiter for stdin data. Default: '/\\r?\\n/'.

Notes

If the split separator is a regular expression, ensure that the split option is either properly escaped or enclosed in quotes.

# Not escaped...
$ echo -n $'beEp booP\nFOO' | is-constantcase --split /\r?\n/
# Escaped...
$ echo -n $'beEp booP\nFOO' | is-constantcase --split /\\r?\\n/

The implementation ignores trailing delimiters.

Examples

$ is-constantcase BEEP_BOOP
true

To use as a standard stream,

$ echo -n 'beep Boop' | is-constantcase
false

By default, when used as a standard stream, the implementation assumes newline-delimited data. To specify an alternative delimiter, set the split option.

$ echo -n 'beepBoop\tBEEP_BOOP' | is-constantcase --split '\t'
false
true