fix: fix installing go 1.18

go 1.18 reports its version as 1.18 and NOT as 1.18.0, which would fail the version check

fixes: #174

src/utils/versions.test.ts

@@ -1,9 +1,9 @@
 import assert from 'assert'
 import { compareVersions, isValidVersion, parseVersion, version } from './versions'
 
-const v0: version = [0, 0, 0]
-const v1: version = [1, 0, 0]
-const v1_2: version = [1, 2, 0]
+const v0_0_0: version = [0, 0, 0]
+const v1_0_0: version = [1, 0, 0]
+const v1_2_0: version = [1, 2, 0]
 const v1_2_3: version = [1, 2, 3]
 
 describe('isValidVersion()', () => {
@@ -19,16 +19,17 @@ describe('isValidVersion()', () => {
   it('should recognise invalid versions', () => {
     assert.ok(!isValidVersion('v 1.0.0'))
     assert.ok(!isValidVersion('1'))
-    assert.ok(!isValidVersion('1.1'))
+    assert.ok(isValidVersion('1.1'))
   })
 
 })
 
 describe("parseVersion()", () => {
   it("should parse simple versions", () => {
-    assert.deepStrictEqual(parseVersion('v0.0.0'), v0)
-    assert.deepStrictEqual(parseVersion('v1.0.0'), v1)
-    assert.deepStrictEqual(parseVersion('v1.2.0'), v1_2)
+    assert.deepStrictEqual(parseVersion('v0.0.0'), v0_0_0)
+    assert.deepStrictEqual(parseVersion('v1.0.0'), v1_0_0)
+    assert.deepStrictEqual(parseVersion('v1.2.0'), v1_2_0)
+    assert.deepStrictEqual(parseVersion('v1.2'), v1_2_0)
     assert.deepStrictEqual(parseVersion('v1.2.3'), v1_2_3)
   })
 })

src/utils/versions.ts

@@ -4,7 +4,7 @@ export type version = [
   number,
 ]
 
-const versionExp = /^v?(\d+)\.(\d+).(\d+)$/
+const versionExp = /^v?(\d+)\.(\d+)(\.(\d+))?$/
 
 export function isValidVersion(version: string): boolean {
   return Boolean(version.trim().match(versionExp))
@@ -30,7 +30,7 @@ export function parseVersion(v: string): version {
   const match = v.trim().match(versionExp)
 
   if (match) {
-    const [, major, minor, patch] = match
+    const [, major, minor,, patch = '0'] = match
     ver = [parseInt(major), parseInt(minor), parseInt(patch)]
   }