fix: can resolve package with version prefixed with v

src/index.ts

@@ -97,7 +97,7 @@ async function resolveNpm (
     let version: string | undefined
     switch (spec.type) {
       case 'version':
-        version = spec.fetchSpec
+        version = semver.clean(spec.fetchSpec) as string
         break
       case 'tag':
         version = meta['dist-tags'][spec.fetchSpec]

src/parsePref.ts

@@ -18,6 +18,7 @@ export default function parsePref (pref: string, alias?: string): RegistryPackag
   if (!name) {
     return null
   }
+  // TODO: this should also return the clean version of the spec (what semver.valid returns)
   const type = getVersionSelectorType(pref, true)
   if (type) {
     return {

test/index.ts

@@ -50,6 +50,15 @@ test('can resolve aliased scoped dependency', async t => {
   t.end()
 })
 
+test('can resolve package with version prefixed with v', async t => {
+  metaCache.clear()
+  const resolveResult = await resolveFromNpm({alias: 'is-positive', pref: 'v1.0.0'}, {
+    registry,
+  })
+  t.equal(resolveResult!.id, 'localhost+4873/is-positive/1.0.0')
+  t.end()
+})
+
 test("resolves to latest if it's inside the wanted range. Even if there are newer versions available inside the range", async t => {
   metaCache.clear()
   await addDistTag({package: 'pnpm-foo', version: '1.0.0', distTag: 'latest'})