Fix renaming scoped packages

__tests__/commands/install/integration.js

@@ -567,6 +567,10 @@ test.concurrent('install renamed packages', (): Promise<void> => {
 
     const json2 = await fs.readJson(path.join(dir, 'left-pad2', 'package.json'));
     expect(json2.version).toEqual('1.1.0');
+
+    const json3 = await fs.readJson(path.join(dir, 'unscoped-turf-helpers', 'package.json'));
+    expect(json3.version).toEqual('3.0.16');
+    expect(json3.name).toEqual('@turf/helpers');
   });
 });
 

__tests__/fixtures/install/install-renamed-packages/package.json

@@ -1,6 +1,7 @@
 {
   "dependencies": {
     "left-pad": "npm:left-pad@1.0.0",
-    "left-pad2": "npm:left-pad@1.1.0"
+    "left-pad2": "npm:left-pad@1.1.0",
+    "unscoped-turf-helpers": "npm:@turf/helpers@3.0.16"
   }
 }

__tests__/fixtures/install/install-renamed-packages/yarn.lock

@@ -1,5 +1,8 @@
 # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
 # yarn lockfile v1
+"@turf/helpers@3.0.16":
+  version "3.0.16"
+  resolved helpers-3.0.16.tgz#450adf252738358847ce0359030412b0b421a877
 "left-pad@npm:left-pad@1.0.0":
   version "1.0.0"
   resolved left-pad-1.0.0.tgz#c84e2417581bbb8eaf2b9e3d7a122e572ab1af37

src/resolvers/exotics/registry-resolver.js

@@ -9,7 +9,7 @@ export default class RegistryResolver extends ExoticResolver {
   constructor(request: PackageRequest, fragment: string) {
     super(request, fragment);
 
-    const match = fragment.match(/^(\S+):(.*?)(@(.*?)|)$/);
+    const match = fragment.match(/^(\S+):(@?.*?)(@(.*?)|)$/);
     if (match) {
       this.range = match[4] || 'latest';
       this.name = match[2];