match-casing

match-casing

Match the case of value to that of base.

Installation

npm:

npm install match-casing

Usage

var casing = require('match-casing');

casing('foo', 'BAZ'); //=> 'FOO'
casing('foo', 'Baz'); //=> 'Foo'
casing('foo', 'baz'); //=> 'foo'
casing('foo', 'BaZ'); //=> 'foo'

casing('FOO', 'BAZ'); //=> 'FOO'
casing('FOO', 'Baz'); //=> 'Foo'
casing('FOO', 'baz'); //=> 'foo'
casing('FOO', 'BaZ'); //=> 'FOO'

casing('Foo', 'BAZ'); //=> 'FOO'
casing('Foo', 'Baz'); //=> 'Foo'
casing('Foo', 'baz'); //=> 'foo'
casing('Foo', 'BaZ'); //=> 'Foo'

casing('’90S', '’twas'); //=> '’90s'
casing('’N’', 'a'); //=> '’n’'

API

matchCasing(value, base)

Transform the case in value (string) to match that of base (string).

Algorithm

• If base is uppercase, value is uppercased
• Else, if base is lowercase, value is lowercased
• Else, if the first alphabetic character in base is uppercase, and the rest of base is lowercase, uppercase the first alphabetic character in value and lowercase the rest
• Else, return value unmodified

The third case, where value takes on a capitalised, deals with initial non-alphabetical characters as expected.

License

MIT © Titus Wormer