feat(validateStrict): validate according to semver

Author: omichelsen

README.md

@@ -102,6 +102,20 @@ validate('1.0-rc.1');   // false
 validate('foo');        // false
 ```
 
+### Validate version numbers (strict)
+
+Validate version numbers strictly according to semver.org; 3 integers, no wildcards, no leading zero or "v" etc:
+
+```js
+import { validateStrict } from 'compare-versions';
+
+validate('1.0.0');      // true
+validate('1.0.0-rc.1'); // true
+validate('1.0');        // false
+validate('1.x');        // false
+validate('v1.02');      // false
+```
+
 ### Browser
 
 If included directly in the browser, the functions above are available on the global window under the `compareVersions` object:
@@ -114,5 +128,6 @@ If included directly in the browser, the functions above are available on the gl
   console.log(compare('11.0.0', '10.0.0', '>'))
   console.log(satisfies('1.2.0', '^1.0.0'))
   console.log(validate('11.0.0'))
+  console.log(validateStrict('11.0.0'))
 </script>
 ```

src/index.ts

@@ -2,4 +2,4 @@ export { compare } from './compare';
 export { compareVersions } from './compareVersions';
 export { satisfies } from './satisfies';
 export { CompareOperator } from './utils';
-export { validate } from './validate';
+export { validate, validateStrict } from './validate';

src/validate.ts

@@ -15,3 +15,22 @@ import { semver } from './utils';
  */
 export const validate = (version: string) =>
   typeof version === 'string' && /^[v\d]/.test(version) && semver.test(version);
+
+/**
+ * Validate [semver](https://semver.org/) version strings strictly. Will not accept wildcards and version ranges.
+ *
+ * @param version Version number to validate
+ * @returns `true` if the version number is a valid semver version number `false` otherwise
+ *
+ * @example
+ * ```
+ * validate('1.0.0-rc.1'); // return true
+ * validate('1.0-rc.1'); // return false
+ * validate('foo'); // return false
+ * ```
+ */
+export const validateStrict = (version: string) =>
+  typeof version === 'string' &&
+  /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$/.test(
+    version
+  );

test/validate.ts

@@ -1,5 +1,5 @@
 import assert from 'assert';
-import { validate } from '../src/index';
+import { validate, validateStrict } from '../src/index';
 
 describe('validate versions', () => {
   (
@@ -32,3 +32,95 @@ describe('validate versions', () => {
     });
   });
 });
+
+describe('validateStrict - https://regex101.com/r/vkijKf/1/', () => {
+  describe('valid', () => {
+    [
+      '0.0.4',
+      '1.2.3',
+      '10.20.30',
+      '1.1.2-prerelease+meta',
+      '1.1.2+meta',
+      '1.1.2+meta-valid',
+      '1.0.0-alpha',
+      '1.0.0-beta',
+      '1.0.0-alpha.beta',
+      '1.0.0-alpha.beta.1',
+      '1.0.0-alpha.1',
+      '1.0.0-alpha0.valid',
+      '1.0.0-alpha.0valid',
+      '1.0.0-alpha-a.b-c-somethinglong+build.1-aef.1-its-okay',
+      '1.0.0-rc.1+build.1',
+      '2.0.0-rc.1+build.123',
+      '1.2.3-beta',
+      '10.2.3-DEV-SNAPSHOT',
+      '1.2.3-SNAPSHOT-123',
+      '1.0.0',
+      '2.0.0',
+      '1.1.7',
+      '2.0.0+build.1848',
+      '2.0.1-alpha.1227',
+      '1.0.0-alpha+beta',
+      '1.2.3----RC-SNAPSHOT.12.9.1--.12+788',
+      '1.2.3----R-S.12.9.1--.12+meta',
+      '1.2.3----RC-SNAPSHOT.12.9.1--.12',
+      '1.0.0+0.build.1-rc.10000aaa-kk-0.1',
+      '99999999999999999999999.999999999999999999.99999999999999999',
+      '1.0.0-0A.is.legal',
+    ].forEach((v) => {
+      it(`${v}`, () => {
+        assert.equal(validateStrict(v), true);
+      });
+    });
+  });
+
+  describe('invalid', () => {
+    [
+      '1',
+      '1.2',
+      '1.2.3-0123',
+      '1.2.3-0123.0123',
+      '1.1.2+.123',
+      '+invalid',
+      '-invalid',
+      '-invalid+invalid',
+      '-invalid.01',
+      'alpha',
+      'alpha.beta',
+      'alpha.beta.1',
+      'alpha.1',
+      'alpha+beta',
+      'alpha_beta',
+      'alpha.',
+      'alpha..',
+      'beta',
+      '1.0.0-alpha_beta',
+      '-alpha.',
+      '1.0.0-alpha..',
+      '1.0.0-alpha..1',
+      '1.0.0-alpha...1',
+      '1.0.0-alpha....1',
+      '1.0.0-alpha.....1',
+      '1.0.0-alpha......1',
+      '1.0.0-alpha.......1',
+      '01.1.1',
+      '1.01.1',
+      '1.1.01',
+      '1.2',
+      '1.2.3.DEV',
+      '1.2-SNAPSHOT',
+      '1.2.31.2.3----RC-SNAPSHOT.12.09.1--..12+788',
+      '1.2-RC-SNAPSHOT',
+      '-1.0.3-gamma+b7718',
+      '+justmeta',
+      '9.8.7+meta+meta',
+      '9.8.7-whatever+meta+meta',
+      '99999999999999999999999.999999999999999999.99999999999999999----RC-SNAPSHOT.12.09.1--------------------------------..',
+      '12',
+    ].forEach((v) => {
+      it(`${v}`, () => {
+        assert.equal(validateStrict(v), false);
+      });
+    });
+  });
+});