Regular expression for matching semver versions

$ npm install --save semver-regex

var semverRegex = require('semver-regex');

semverRegex().test('v1.0.0');
//=> true

semverRegex().test('1.2.3-alpha.10.beta.0+build.unicorn.rainbow');
//=> true

semverRegex().exec('unicorn 1.0.0 rainbow')[0];
//=> 1.0.0

'unicorn 1.0.0 and rainbow 2.1.3'.match(semverRegex());
//=> ['1.0.0', '2.1.3']

It's a function so you can create multiple instances. Regexes with the global flag will have the .lastIndex property changed for each call to methods on the instance. Therefore reusing the instance with multiple calls will not work as expected for .test().

MIT © Sindre Sorhus