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');

console.log(casing('foo', 'BAZ')); // FOO
console.log(casing('foo', 'Baz')); // Foo
console.log(casing('foo', 'baz')); // foo
console.log(casing('foo', 'BaZ')); // foo

console.log(casing('FOO', 'BAZ')); // FOO
console.log(casing('FOO', 'Baz')); // Foo
console.log(casing('FOO', 'baz')); // foo
console.log(casing('FOO', 'BaZ')); // FOO

console.log(casing('Foo', 'BAZ')); // FOO
console.log(casing('Foo', 'Baz')); // Foo
console.log(casing('Foo', 'baz')); // foo
console.log(casing('Foo', 'BaZ')); // Foo

console.log(casing('’90S', '’twas')); // ’90s
console.log(casing('’N’', 'a')); // ’n’

API

matchCasing(value, base)

Parameters

• value (string) — Value whose case to change.
• match (string) — Value whose case to match.

Returns

string — value, but cased as base.

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